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95f0c1de3e6ed4383cc4b5f52ce4ecfb21026b49
Analyze and fix the following issue in the Linux kernel code: rcu: Disable preemption in rcu_blocking_is_gp()
Problem Details: It is time to optimize CONFIG_TREE_PREEMPT_RCU's synchronize_rcu() for uniprocessor optimization, which means that rcu_blocking_is_gp() can no longer rely on RCU read-side critical sections having disabled preemption. This commit therefore disables preemption across rcu_blocking_is_gp()'s scan of the ...
```diff diff --git a/kernel/rcutree.c b/kernel/rcutree.c index 70c4da7d2a97..e000a623e635 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -1981,28 +1981,16 @@ EXPORT_SYMBOL_GPL(call_rcu_bh); * occasionally incorrectly indicate that there are multiple CPUs online * when there was in fact only one the whole t...
d7118175cce7e76b3292b60832813ef1f28b6523
Analyze and fix the following issue in the Linux kernel code: rcu: Fix rcu_is_cpu_idle() #ifdef in TINY_RCU
Problem Details: The rcu_is_cpu_idle() function is used if CONFIG_DEBUG_LOCK_ALLOC, but TINY_RCU defines it only when CONFIG_PROVE_RCU. This causes build failures when CONFIG_DEBUG_LOCK_ALLOC=y but CONFIG_PROVE_RCU=n. This commit therefore adjusts the #ifdefs for rcu_is_cpu_idle() so that it is defined when CONFIG_DEB...
```diff diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c index 37a5444204d2..547b1fe5b052 100644 --- a/kernel/rcutiny.c +++ b/kernel/rcutiny.c @@ -172,7 +172,7 @@ void rcu_irq_enter(void) local_irq_restore(flags); } -#ifdef CONFIG_PROVE_RCU +#ifdef CONFIG_DEBUG_LOCK_ALLOC /* * Test whether RCU thinks that the...
285fe29481d865ae381ad3924c80894e6968c2d8
Analyze and fix the following issue in the Linux kernel code: rcu: Fix detection of abruptly-ending stall
Problem Details: The code that attempts to identify stalls that end just as we detect them is broken by both flavors of initialization failure. This commit therefore properly initializes and computes the count of the number of reasons why the RCU grace period is stalled. Signed-off-by: Paul E. McKenney <paul.mckenney...
```diff diff --git a/kernel/rcutree.c b/kernel/rcutree.c index 4b97bba7396e..dc8c5284fe06 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -733,7 +733,7 @@ static void print_other_cpu_stall(struct rcu_state *rsp) int cpu; long delta; unsigned long flags; - int ndetected; + int ndetected = 0; struct rcu_n...
143aa672f4fc643420c8325ad09c379ed33a27cf
Analyze and fix the following issue in the Linux kernel code: rcu: Fix diagnostic-printk typo in rcutorture
Problem Details: The rcu_torture_barrier() function has a copy-and-paste typo in the string passed to rcutorture_shutdown_absorb(), which this commit fixes. Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtripl...
```diff diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c index f7fe73e59c9f..045a3dc233ea 100644 --- a/kernel/rcutorture.c +++ b/kernel/rcutorture.c @@ -1700,7 +1700,7 @@ static int rcu_torture_barrier(void *arg) schedule_timeout_interruptible(HZ / 10); } while (!kthread_should_stop() && fullstop == FULLSTOP...
c6ebcbb60c8c68a88160fe54302e851700d1362c
Analyze and fix the following issue in the Linux kernel code: rcu: Fix bug in rcu_barrier() torture test
Problem Details: The child threads in the rcu_torture_barrier_cbs() are improperly synchronized, which can cause the rcu_barrier() tests to hang. The failure mode is as follows: 1. CPU 0 running in rcu_torture_barrier() sets barrier_cbs_count to n_barrier_cbs. 2. CPU 1 running in rcu_torture_barrier_cbs() wakes...
```diff diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c index 7b6935e0cee3..f7fe73e59c9f 100644 --- a/kernel/rcutorture.c +++ b/kernel/rcutorture.c @@ -206,6 +206,7 @@ static unsigned long boost_starttime; /* jiffies of next boost test start. */ DEFINE_MUTEX(boost_mutex); /* protect setting boost_starttime */ ...
cba6d0d64ee53772b285d0c0c288deefbeaf7775
Analyze and fix the following issue in the Linux kernel code: Revert "rcu: Move PREEMPT_RCU preemption to switch_to() invocation"
Problem Details: This reverts commit 616c310e83b872024271c915c1b9ab505b9efad9. (Move PREEMPT_RCU preemption to switch_to() invocation). Testing by Sasha Levin <levinsasha928@gmail.com> showed that this can result in deadlock due to invoking the scheduler when one of the runqueue locks is held. Because this commit was ...
```diff diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c index 88e466b159dc..43b39d61b538 100644 --- a/arch/um/drivers/mconsole_kern.c +++ b/arch/um/drivers/mconsole_kern.c @@ -705,7 +705,6 @@ static void stack_proc(void *arg) struct task_struct *from = current, *to = arg; to->thread...
17d7a1123f0f6d532830152564cc812cc73db2f3
Analyze and fix the following issue in the Linux kernel code: perf bench: Fix confused variable namings and descriptions in mem subsystem
Problem Details: As Namhyung Kim pointed, there are confused namings and descriptions of words "cycle" and "clock" in mem-memset.c and mem-memcpy.c. With the option "-c" (or "--clock", now renamed as "--cycle"), mem subsystem measures cost of memset() and memcpy() with cpu-cycles event. But current mem subsystem sour...
```diff diff --git a/tools/perf/Documentation/perf-bench.txt b/tools/perf/Documentation/perf-bench.txt index f3c716a4cad3..7065cd6fbdfc 100644 --- a/tools/perf/Documentation/perf-bench.txt +++ b/tools/perf/Documentation/perf-bench.txt @@ -144,7 +144,7 @@ On x86-64, x86-64-unrolled, x86-64-movsq and x86-64-movsb are sup...
7ed97ad41ffa94040dfd593948962a7e9e7b0db9
Analyze and fix the following issue in the Linux kernel code: perf kvm: Fix segfault with report and mixed guestmount use
Problem Details: Using the guestmount option on record: $ perf kvm --guest --host --guestmount=/tmp/guest-mount record -ag But not the subsequent report: $ perf kvm report causes a SEGFAULT in the usual place: (gdb) bt 0 0x0000000000470356 in machine__mmap_name (self=0x0, bf=0x7fffffffbdb0 " z\370\367\377\17...
```diff diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index 35ae56864e4f..a1f4e3669142 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -669,25 +669,26 @@ struct machine *machines__find(struct rb_root *self, pid_t pid) struct machine *machines__findnew(struct rb_root *self, pid_t pid) { ...
207b5792696206663a38e525b9793644895bad3b
Analyze and fix the following issue in the Linux kernel code: perf kvm: Fix regression with guest machine creation
Problem Details: Commit 743eb868657bdb1b26c7b24077ca21c67c82c777 reworked when the machines were created. Prior to this commit guest machines could be created in perf_event__process_kernel_mmap() while processing kernel MMAP events. This commit assumes that the machines exist by the time perf_session_deliver_event is c...
```diff diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index c3e399bcf18d..56142d0fb8d7 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -926,7 +926,7 @@ static struct machine * else pid = event->ip.pid; - return perf_session__find_machine(session, pid); + return ...
76a8349dfdb775d387e9767db3092e410403138a
Analyze and fix the following issue in the Linux kernel code: perf script: Fix format regression due to libtraceevent merge
Problem Details: Consider the commands: perf record -e sched:sched_switch -fo /tmp/perf.data -a -- sleep 1 perf script -i /tmp/perf.data In v3.4 the output has the form (lines wrapped here) perf 29214 [005] 821043.582596: sched_switch: prev_comm=perf prev_pid=29214 prev_prio=120 prev_state=S ==> next_comm...
```diff diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c index df2fddbf0cd2..5dd3b5ec8411 100644 --- a/tools/perf/util/trace-event-parse.c +++ b/tools/perf/util/trace-event-parse.c @@ -198,9 +198,8 @@ void print_trace_event(int cpu, void *data, int size) record.data = data; t...
659b5e76521c10331495cbd9acb7217e38ff9750
Analyze and fix the following issue in the Linux kernel code: security: Fix nommu build.
Problem Details: The security + nommu configuration presently blows up with an undefined reference to BDI_CAP_EXEC_MAP: security/security.c: In function 'mmap_prot': security/security.c:687:36: error: dereferencing pointer to incomplete type security/security.c:688:16: error: 'BDI_CAP_EXEC_MAP' undeclared (first use i...
```diff diff --git a/security/security.c b/security/security.c index 3efc9b12aef4..860aeb349cb3 100644 --- a/security/security.c +++ b/security/security.c @@ -23,6 +23,7 @@ #include <linux/mman.h> #include <linux/mount.h> #include <linux/personality.h> +#include <linux/backing-dev.h> #include <net/flow.h> #defin...
f25b00be60ab3865308a89437af66b277b04f53e
Analyze and fix the following issue in the Linux kernel code: ARM: at91: fix at91_aic_write macro
Problem Details: Fix at91_aic_write macro to avoid potential issues. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
```diff diff --git a/arch/arm/mach-at91/include/mach/at91_aic.h b/arch/arm/mach-at91/include/mach/at91_aic.h index 3045781c473f..c1413ed1172d 100644 --- a/arch/arm/mach-at91/include/mach/at91_aic.h +++ b/arch/arm/mach-at91/include/mach/at91_aic.h @@ -23,7 +23,7 @@ extern void __iomem *at91_aic_base; __raw_readl(at91_...
95669d788192d351890bfb16785336c2db816356
Analyze and fix the following issue in the Linux kernel code: ARM: OMAP2: Overo: init I2C before MMC to fix MMC suspend/resume failure
Problem Details: In order for suspend/resume dependencies to work correctly, I2C has to be initialized (more specifically, registered with the driver core) before MMC. Without this, the MMC driver fails to adjust the VMMC regulator (using i2c writes) during the suspend path. Problem found testing suspend/resume on 37...
```diff diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c index 8fa2fc3a4c3c..779734d8ba37 100644 --- a/arch/arm/mach-omap2/board-overo.c +++ b/arch/arm/mach-omap2/board-overo.c @@ -494,8 +494,8 @@ static void __init overo_init(void) regulator_register_fixed(0, dummy_supplies, ARRAY...
fd316941cfee1fbd12746afea83720fb7823888a
Analyze and fix the following issue in the Linux kernel code: spi/pl022: disable port when unused
Problem Details: Commit ffbbdd21329f3e15eeca6df2d4bc11c04d9d91c0 "spi: create a message queueing infrastructure" Accidentally deleted the logic to disable the port when unused leading to higher power consumption. Fix this up. Cc: stable@kernel.org Cc: Vinit Shenoy <vinit.shenoy@st.com> Signed-off-by: Virupax Sadashivp...
```diff diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c index 400ae2121a2a..469eb28e8328 100644 --- a/drivers/spi/spi-pl022.c +++ b/drivers/spi/spi-pl022.c @@ -489,6 +489,11 @@ static void giveback(struct pl022 *pl022) pl022->cur_transfer = NULL; pl022->cur_chip = NULL; spi_finalize_current_message...
d97d476b1bb11e24268a6bac8214f9bc58716b45
Analyze and fix the following issue in the Linux kernel code: slab: Fix a typo in commit 8c138b "slab: Get rid of obj_size macro"
Problem Details: Commit 8c138b only sits in Pekka's and linux-next tree now, which tries to replace obj_size(cachep) with cachep->object_size, but has a typo in kmem_cache_free() by using "size" instead of "object_size", which casues some regressions. Reported-and-tested-by: Fengguang Wu <wfg@linux.intel.com> Signed-...
```diff diff --git a/mm/slab.c b/mm/slab.c index d95ad4c37f64..8b7cb802a754 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -3890,7 +3890,7 @@ void kmem_cache_free(struct kmem_cache *cachep, void *objp) unsigned long flags; local_irq_save(flags); - debug_check_no_locks_freed(objp, cachep->size); + debug_check_no_locks_...
0672aa7c236ada6c636e68b2ac2aa135169e6e18
Analyze and fix the following issue in the Linux kernel code: mm, slab: Build fix for recent kmem_cache changes
Problem Details: Commit 3b0efdf ("mm, sl[aou]b: Extract common fields from struct kmem_cache") renamed the kmem_cache structure's "next" field to "list" but forgot to update one instance in leaks_show(). Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Pekka Enberg <penberg@kernel.org>
```diff diff --git a/mm/slab.c b/mm/slab.c index bb7965253159..d95ad4c37f64 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -4533,7 +4533,7 @@ static void show_symbol(struct seq_file *m, unsigned long address) static int leaks_show(struct seq_file *m, void *p) { - struct kmem_cache *cachep = list_entry(p, struct kmem_cac...
3775d4818d72081e2afa2aed2442a2b9ecfc5eab
Analyze and fix the following issue in the Linux kernel code: iommu/amd: fix type bug in flush code
Problem Details: write_file_bool() modifies 32 bits of data, so "amd_iommu_unmap_flush" needs to be 32 bits as well or we'll corrupt memory. Fortunately it looks like the data is aligned with a gap after the declaration so this is harmless in production. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-...
```diff diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index dfe7d37c82c5..625626391f2d 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -404,7 +404,7 @@ static void amd_iommu_stats_init(void) return; de_fflush = debugfs_create_bool("fullflush", 0444, stats_dir, - ...
68ee6d22376411f8ec668413f1b632a34192a807
Analyze and fix the following issue in the Linux kernel code: dma-debug: debugfs_create_bool() takes a u32 pointer
Problem Details: Even though it has "bool" in the name, you have pass a u32 pointer to debugfs_create_bool(). Otherwise you get memory corruption in write_file_bool(). Fortunately in this case the corruption happens in an alignment hole between variables so it doesn't cause any problems. Signed-off-by: Dan Carpenter...
```diff diff --git a/lib/dma-debug.c b/lib/dma-debug.c index 518aea714d21..66ce41489133 100644 --- a/lib/dma-debug.c +++ b/lib/dma-debug.c @@ -78,7 +78,7 @@ static LIST_HEAD(free_entries); static DEFINE_SPINLOCK(free_entries_lock); /* Global disable flag - will be set in case of an error */ -static bool global_disa...
8f53dc724a83a0082184fa27df80c25c7df47340
Analyze and fix the following issue in the Linux kernel code: iommu/tegra: smmu: Fix unsleepable memory allocation
Problem Details: allo_pdir() is called in smmu_iommu_domain_init() with spin_lock held. memory allocations in it have to be atomic/unsleepable. Signed-off-by: Hiroshi DOYU <hdoyu@nvidia.com> Reported-by: Chris Wright <chrisw@sous-sol.org> Acked-by: Chris Wright <chrisw@sous-sol.org> Cc: stable@vger.kernel.org Signed-o...
```diff diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index ecd679043d77..3f3d09d560ea 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -550,13 +550,13 @@ static int alloc_pdir(struct smmu_as *as) return 0; as->pte_count = devm_kzalloc(smmu->dev, - sizeof(a...
ec00f044ef6637470dcb4ce676a8c513848487cb
Analyze and fix the following issue in the Linux kernel code: can: fix sparse warning in af_can.c
Problem Details: Put can_rx_alldev_list into the af_can header to fix the following sparse warning: net/can/af_can.c:80:22: warning: symbol 'can_rx_alldev_list' was not declared. Should it be static? Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
```diff diff --git a/net/can/af_can.h b/net/can/af_can.h index fd882dbadad3..1dccb4c33894 100644 --- a/net/can/af_can.h +++ b/net/can/af_can.h @@ -104,6 +104,9 @@ struct s_pstats { unsigned long rcv_entries_max; }; +/* receive filters subscribed for 'all' CAN devices */ +extern struct dev_rcv_lists can_rx_alldev_l...
77fc95a356cd07d247bbe42a66596ba7b8486920
Analyze and fix the following issue in the Linux kernel code: can: dev: fix sparse warning for can_restart
Problem Details: Make can_restart static to fix the following sparse warning: drivers/net/can/dev.c:371:6: warning: symbol 'can_restart' was not declared. Should it be static? Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
```diff diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c index 239e4dd92ca1..963e2ccd10db 100644 --- a/drivers/net/can/dev.c +++ b/drivers/net/can/dev.c @@ -401,7 +401,7 @@ EXPORT_SYMBOL_GPL(can_free_echo_skb); /* * CAN device restart for bus-off recovery */ -void can_restart(unsigned long data) +static ...
ea9f07197cae739fb22fd208a68425fea26a763b
Analyze and fix the following issue in the Linux kernel code: can: cc770: fix sparse warning for cc770_interrupt
Problem Details: Make cc770_interrupt static to fix the following sparse warning: drivers/net/can/cc770/cc770.c:699:13: warning: symbol 'cc770_interrupt' was not declared. Should it be static? Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
```diff diff --git a/drivers/net/can/cc770/cc770.c b/drivers/net/can/cc770/cc770.c index d42a6a7396f2..a138db11cbf0 100644 --- a/drivers/net/can/cc770/cc770.c +++ b/drivers/net/can/cc770/cc770.c @@ -695,7 +695,7 @@ static void cc770_tx_interrupt(struct net_device *dev, unsigned int o) netif_wake_queue(dev); } -irq...
f8ecf829481b2cc7301a811da9d2df53ef174977
Analyze and fix the following issue in the Linux kernel code: usb: phy: fix error handling in usb_get_phy
Problem Details: spin_unlock_irqrestore() was not being called in the error path of usb_get_phy. It's fixed here. Reported-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
```diff diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c index 88d62b16f632..1bf60a22595c 100644 --- a/drivers/usb/otg/otg.c +++ b/drivers/usb/otg/otg.c @@ -98,11 +98,12 @@ struct usb_phy *usb_get_phy(enum usb_phy_type type) if (IS_ERR(phy)) { pr_err("unable to find transceiver of type %s\n", usb_phy...
64941d8930e619ef37227f88c6ee17e2624c65d2
Analyze and fix the following issue in the Linux kernel code: sh: Fix up se7721 GPIOLIB=y build warnings.
Problem Details: Presently the SH7720/21 serial code uses asm/gpio.h to get at the CPU GPIO port definitions, but in the case of GPIOLIB=y this also includes references to generic GPIOLIB routines that we don't have any function declarations for, tripping up on -Werror=implicit-function-declaration with newer gcc versi...
```diff diff --git a/arch/sh/kernel/cpu/sh3/serial-sh7720.c b/arch/sh/kernel/cpu/sh3/serial-sh7720.c index 8832c526cdf9..c4a0336660dd 100644 --- a/arch/sh/kernel/cpu/sh3/serial-sh7720.c +++ b/arch/sh/kernel/cpu/sh3/serial-sh7720.c @@ -2,7 +2,7 @@ #include <linux/serial_core.h> #include <linux/io.h> #include <cpu/ser...
2f584a146a2965b82fce89b8d2f95dc5cfe468d0
Analyze and fix the following issue in the Linux kernel code: powerpc/kvm: sldi should be sld
Problem Details: Since we are taking a registers, this should never have been an sldi. Talking to paulus offline, this is the correct fix. Was introduced by: commit 19ccb76a1938ab364a412253daec64613acbf3df Author: Paul Mackerras <paulus@samba.org> Date: Sat Jul 23 17:42:46 2011 +1000 Talking to paulus, this shou...
```diff diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index a84aafce2a12..a1044f43becd 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -810,7 +810,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_201) lwz r3,VCORE_NAPPING_TH...
bc1d7702910c7c7e88eb60b58429dbfe293683ce
Analyze and fix the following issue in the Linux kernel code: powerpc/xmon: Use cpumask iterator to avoid warning
Problem Details: We have a bug report where the kernel hits a warning in the cpumask code: WARNING: at include/linux/cpumask.h:107 Which is: WARN_ON_ONCE(cpu >= nr_cpumask_bits); The backtrace is: cpu_cmd cmds xmon_core xmon die xmon is iterating through 0 to NR_CPUS....
```diff diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index 0f3ab06d2222..eab3492a45c5 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -971,7 +971,7 @@ static int cpu_cmd(void) /* print cpus waiting or in xmon */ printf("cpus stopped:"); count = 0; - for (cpu = 0; cp...
0c5e45b63d22c6efa6f829c617d8f36688e53c5d
Analyze and fix the following issue in the Linux kernel code: batman-adv: fix counter summary length
Problem Details: Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
```diff diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h index 8193650e5496..b8d4ac17f001 100644 --- a/net/batman-adv/main.h +++ b/net/batman-adv/main.h @@ -265,9 +265,8 @@ static inline void batadv_add_counter(struct batadv_priv *bat_priv, size_t idx, static inline uint64_t batadv_sum_counter(struct batadv_...
0aca2369b19de3f3f1affcc5359c3d079e4e1940
Analyze and fix the following issue in the Linux kernel code: batman-adv: Fix alignment after opened parentheses
Problem Details: Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
```diff diff --git a/net/batman-adv/debugfs.c b/net/batman-adv/debugfs.c index e45cf0e884cc..34fbb1667bcd 100644 --- a/net/batman-adv/debugfs.c +++ b/net/batman-adv/debugfs.c @@ -111,6 +111,11 @@ static int batadv_log_release(struct inode *inode, struct file *file) return 0; } +static int batadv_log_empty(struct b...
b706b13b6cfde22d1f4adc540fd89426247c1e3e
Analyze and fix the following issue in the Linux kernel code: batman-adv: Remove bat_ prefix from bat_{debugfs, sysfs}.{c, h}
Problem Details: The "bat_" prefix in the source files implementing the batman-adv sysfs and debugfs interface doesn't have a special meaning and are only used by these files and files that implement the actual B.A.T.M.A.N. path finding algorithm. The prefix is better suited to mark files that are used to implement th...
```diff diff --git a/net/batman-adv/Makefile b/net/batman-adv/Makefile index 6d5c1940667d..8676d2b1d574 100644 --- a/net/batman-adv/Makefile +++ b/net/batman-adv/Makefile @@ -19,11 +19,10 @@ # obj-$(CONFIG_BATMAN_ADV) += batman-adv.o -batman-adv-y += bat_debugfs.o batman-adv-y += bat_iv_ogm.o -batman-adv-y += bat_...
b4d66b877bc21ce907938bfd027dfe016617fac0
Analyze and fix the following issue in the Linux kernel code: batman-adv: Prefix local sysfs struct with batadv_
Problem Details: Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
```diff diff --git a/net/batman-adv/bat_sysfs.c b/net/batman-adv/bat_sysfs.c index c4794c6edf2f..eb17629a78bc 100644 --- a/net/batman-adv/bat_sysfs.c +++ b/net/batman-adv/bat_sysfs.c @@ -54,7 +54,7 @@ static char *batadv_uev_type_str[] = { /* Use this, if you have customized show and store functions */ #define BATA...
5bf74e9ca1e618afe5a513f64ee4923115e67004
Analyze and fix the following issue in the Linux kernel code: batman-adv: Prefix hash struct and typedef with batadv_
Problem Details: Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
```diff diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index b463402281b1..8bd70501b1e0 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -133,7 +133,7 @@ static void batadv_claim_free_ref(struct claim *claim) static struct...
7f223c0c323a9ac2e88714669994007776e966a8
Analyze and fix the following issue in the Linux kernel code: batman-adv: Prefix local debugfs structs with batadv_
Problem Details: Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
```diff diff --git a/net/batman-adv/bat_debugfs.c b/net/batman-adv/bat_debugfs.c index 4dcda43d6822..bd618e4df865 100644 --- a/net/batman-adv/bat_debugfs.c +++ b/net/batman-adv/bat_debugfs.c @@ -265,13 +265,13 @@ static int batadv_vis_data_open(struct inode *inode, struct file *file) return single_open(file, batadv_v...
d69909d2fc9e00bd8149cc8df9b18c35008e3e62
Analyze and fix the following issue in the Linux kernel code: batman-adv: Prefix types enum with BATADV_
Problem Details: Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
```diff diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index a59e317284ad..60997192c899 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -209,8 +209,8 @@ static void batadv_iv_ogm_send_to_if(struct forw_packet *forw_packet, /* create clone because function is calle...
e9a4f295ebe06b00d6af5597c0cea78c315c2ebc
Analyze and fix the following issue in the Linux kernel code: batman-adv: Prefix hard-interface enum with BATADV_
Problem Details: Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
```diff diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index d3fc58172c8b..a59e317284ad 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -165,7 +165,7 @@ static void batadv_iv_ogm_send_to_if(struct forw_packet *forw_packet, struct batman_ogm_packet *batman_ogm_pack...
cd646ab1e2edde9faeff52bbc1b40e58a5e381fc
Analyze and fix the following issue in the Linux kernel code: batman-adv: Prefix gateway enum with BATADV_
Problem Details: Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
```diff diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index bbe0f123d2a5..d3fc58172c8b 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -611,7 +611,7 @@ static void batadv_iv_ogm_schedule(struct hard_iface *hard_iface) batman_ogm_packet->flags &= ~VIS_SERVER; ...
a0a30b6a69275c54542130a8391e0fda30a4553b
Analyze and fix the following issue in the Linux kernel code: ARM: LPC32xx: Remove wrong re-initialization of MMC clock register
Problem Details: This patch fixes a bug, (wrongfully) resetting the value of LPC32XX_CLKPWR_MS_CTRL back to its initial contents (after careful setup). This was discovered only with a board/bootloader combination (EA3250) where the contents of the respective register wasn't already at the correct value on Linux boot. ...
```diff diff --git a/arch/arm/mach-lpc32xx/clock.c b/arch/arm/mach-lpc32xx/clock.c index eb1b12092951..b64f98537b5d 100644 --- a/arch/arm/mach-lpc32xx/clock.c +++ b/arch/arm/mach-lpc32xx/clock.c @@ -871,7 +871,7 @@ static unsigned long mmc_round_rate(struct clk *clk, unsigned long rate) static int mmc_set_rate(struc...
c9fc3f778a6a215ace14ee556067c73982b6d40f
Analyze and fix the following issue in the Linux kernel code: x86, microcode: Sanitize per-cpu microcode reloading interface
Problem Details: Microcode reloading in a per-core manner is a very bad idea for both major x86 vendors. And the thing is, we have such interface with which we can end up with different microcode versions applied on different cores of an otherwise homogeneous wrt (family,model,stepping) system. So turn off the possibi...
```diff diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c index fbdfc6917180..24b852b61be3 100644 --- a/arch/x86/kernel/microcode_core.c +++ b/arch/x86/kernel/microcode_core.c @@ -298,19 +298,31 @@ static ssize_t reload_store(struct device *dev, const char *buf, size_t size) { ...
63fe23c34e1c18725bd1459897bf3a46335d88b7
Analyze and fix the following issue in the Linux kernel code: dmaengine: sa11x0-dma: fix DMA residue support
Problem Details: The semantics now implemented are: - If the cookie has completed successfully, the residue will be zero. - If the cookie is in progress or the channel is paused, it will be the number of bytes yet to be transferred. [*] - If the cookie is queued, it will be the number of bytes in the descriptor. ...
```diff diff --git a/drivers/dma/sa11x0-dma.c b/drivers/dma/sa11x0-dma.c index 5f1d2e670837..db4fcbd80c7d 100644 --- a/drivers/dma/sa11x0-dma.c +++ b/drivers/dma/sa11x0-dma.c @@ -416,27 +416,47 @@ static enum dma_status sa11x0_dma_tx_status(struct dma_chan *chan, struct sa11x0_dma_chan *c = to_sa11x0_dma_chan(chan); ...
06e885b735717d1074dec13ae8b8d15edcd63255
Analyze and fix the following issue in the Linux kernel code: dmaengine: PL08x: fix tx_status function to return correct residue
Problem Details: Now that we're converted to use the generic vchan support, we can fix the residue return from tx_status to be compliant with dmaengine. This returns the number of bytes remaining for the _specified_ cookie, not the number of bytes in all pending transfers on the channel. Acked-by: Linus Walleij <linu...
```diff diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index 6a35e37d14bc..c42c7ef6b93a 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -473,10 +473,8 @@ static u32 pl08x_getbytes_chan(struct pl08x_dma_chan *plchan) { struct pl08x_phy_chan *ch; struct pl08x_txd *txd; - uns...
92d2fd619d143b9559c1d6bca10162da4c1c2d34
Analyze and fix the following issue in the Linux kernel code: dmaengine: PL08x: fix missed dma_transfer_direction fixup
Problem Details: db8196df4 (dmaengine: move drivers to dma_transfer_direction) missed fixing up the "DMA_NONE" case. Acked-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
```diff diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index 5586d9ac4e78..f3ab004509ba 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -1287,7 +1287,7 @@ static struct dma_async_tx_descriptor *pl08x_prep_dma_memcpy( } list_add_tail(&dsg->node, &txd->dsg_list); - txd->dir...
b843441a4c13281823cbd06128b0265fc80f985c
Analyze and fix the following issue in the Linux kernel code: dmaengine: PL08x: remove runtime PM support
Problem Details: The runtime PM support conflicts with the generic AMBA bus PM, and also causes a potential deadlock with the PL011 driver as it results in interrupts being enabled beneath a spinlock. I don't presently see any solution to this other than by removing the runtime PM support entirely from the DMA engine ...
```diff diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index 49ecbbb8932d..5586d9ac4e78 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -404,7 +404,6 @@ pl08x_get_phy_channel(struct pl08x_driver_data *pl08x, return NULL; } - pm_runtime_get_sync(&pl08x->adev->dev); retu...
ce9dcb8784611c50974d1c6b600c71f5c0a29308
Analyze and fix the following issue in the Linux kernel code: ARM: davinci: add runtime PM support for clock management
Problem Details: Add runtime PM core support to davinci by using the pm_clk infrastructure of the PM core. When runtime PM is enabled, the davinci runtime PM implementation will use the pm_clk layer to enable/disable clocks on demand. When runtime PM is disabled, the pm_clk core will automatically enable clocks when ...
```diff diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile index 2db78bd5c835..2227effcb0e9 100644 --- a/arch/arm/mach-davinci/Makefile +++ b/arch/arm/mach-davinci/Makefile @@ -39,3 +39,4 @@ obj-$(CONFIG_MACH_OMAPL138_HAWKBOARD) += board-omapl138-hawk.o obj-$(CONFIG_CPU_FREQ) += cpufreq.o ...
b2df1d4f8b95d9d1e3f064cef02fc5c5116b05cf
Analyze and fix the following issue in the Linux kernel code: PM / Sleep: Separate printing suspend times from initcall_debug
Problem Details: Change the behavior of the newly introduced /sys/power/pm_print_times attribute so that its initial value depends on initcall_debug, but setting it to 0 will cause device suspend/resume times not to be printed, even if initcall_debug has been set. This way, the people who use initcall_debug for reason...
```diff diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 6e4db96958d1..df5f41d2ec95 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -166,7 +166,7 @@ static ktime_t initcall_debug_start(struct device *dev) { ktime_t calltime = ktime_set(0, 0); - if (pm_print_times) ...
4b7760ba0dd3319f66886ab2335a0fbecdbc808a
Analyze and fix the following issue in the Linux kernel code: PM / Sleep: add knob for printing device resume times
Problem Details: Added a new knob called /sys/power/pm_print_times. Setting it to 1 enables printing of time taken by devices to suspend and resume. Setting it to 0 disables this printing (unless overridden by initcall_debug kernel command line option). Signed-off-by: Sameer Nanda <snanda@chromium.org> Acked-by: Greg ...
```diff diff --git a/Documentation/ABI/testing/sysfs-power b/Documentation/ABI/testing/sysfs-power index 31725ffeeb3a..217772615d02 100644 --- a/Documentation/ABI/testing/sysfs-power +++ b/Documentation/ABI/testing/sysfs-power @@ -231,3 +231,16 @@ Description: Reads from this file return a string consisting of the n...
443772d408a25af62498793f6f805ce3c559309a
Analyze and fix the following issue in the Linux kernel code: ftrace: Disable function tracing during suspend/resume and hibernation, again
Problem Details: If function tracing is enabled for some of the low-level suspend/resume functions, it leads to triple fault during resume from suspend, ultimately ending up in a reboot instead of a resume (or a total refusal to come out of suspended state, on some machines). This issue was explained in more detail in...
```diff diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index 21ad3fe3164f..0d4b354bc1be 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -358,6 +358,7 @@ int hibernation_snapshot(int platform_mode) } suspend_console(); + ftrace_stop(); pm_restrict_gfp_mask(); error =...
6416c0409dda00aa66b2a4615044fb59d80f6bb2
Analyze and fix the following issue in the Linux kernel code: ARM: pxa: hx4700: Fix basic suspend/resume
Problem Details: Basic suspend/resume is fixed by ensuring that the PGSR registers are set correctly before sleep mode is entered. In particular four of the active low resets need to be driven high while in sleep mode, otherwise the unit resets itself instead of suspending. Another problem was that the PCFR_GPROD bit i...
```diff diff --git a/arch/arm/mach-pxa/hx4700.c b/arch/arm/mach-pxa/hx4700.c index d09da6a746b8..d3de84b0dcbe 100644 --- a/arch/arm/mach-pxa/hx4700.c +++ b/arch/arm/mach-pxa/hx4700.c @@ -127,7 +127,11 @@ static unsigned long hx4700_pin_config[] __initdata = { GPIO19_SSP2_SCLK, GPIO86_SSP2_RXD, GPIO87_SSP2_TXD, - ...
0e90b49ca4b891f085b57559a3071a4feefb496c
Analyze and fix the following issue in the Linux kernel code: igbvf: fix divide by zero
Problem Details: Using ethtool -C ethX rx-usecs 0 crashes with a divide by zero. Refactor this function to fix this issue and make it more clear what the intent of each conditional is. Add comment regarding using a setting of zero. CC: stable <stable@vger.kernel.org> [3.3+] CC: David Ahern <daahern@cisco.com> Signed-o...
```diff diff --git a/drivers/net/ethernet/intel/igbvf/ethtool.c b/drivers/net/ethernet/intel/igbvf/ethtool.c index 8ce67064b9c5..90eef07943f4 100644 --- a/drivers/net/ethernet/intel/igbvf/ethtool.c +++ b/drivers/net/ethernet/intel/igbvf/ethtool.c @@ -357,21 +357,28 @@ static int igbvf_set_coalesce(struct net_device *ne...
4f0f4af59cb07bcf44d3c07a9e8c26df54d9fff8
Analyze and fix the following issue in the Linux kernel code: printk.c: fix kernel-doc warnings
Problem Details: Fix kernel-doc warnings in printk.c: use correct parameter name. Warning(kernel/printk.c:2429): No description found for parameter 'buf' Warning(kernel/printk.c:2429): Excess function parameter 'line' description in 'kmsg_dump_get_buffer' Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-...
```diff diff --git a/kernel/printk.c b/kernel/printk.c index 5ae6b09e3805..dba18211685e 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -2538,7 +2538,7 @@ EXPORT_SYMBOL_GPL(kmsg_dump_get_line); * kmsg_dump_get_buffer - copy kmsg log lines * @dumper: registered kmsg dumper * @syslog: include the "<4>" prefix...
87fac288083db40b5d5ab845393be268357c8827
Analyze and fix the following issue in the Linux kernel code: linux/irq.h: fix kernel-doc warning
Problem Details: Fix kernel-doc warning. This struct member was removed in commit 875682648b89 ("irq: Remove irq_chip->release()") so remove its associated kernel-doc entry also. Warning(include/linux/irq.h:338): Excess struct/union/enum/typedef member 'release' description in 'irq_chip' Signed-off-by: Randy Dunla...
```diff diff --git a/include/linux/irq.h b/include/linux/irq.h index 61f5cec031e0..a5261e3d2e3c 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -301,8 +301,6 @@ static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d) * @irq_pm_shutdown: function called from core code on shutdown once per chip ...
5ae95aefb73b32ec4e7c46554304042ba82230ca
Analyze and fix the following issue in the Linux kernel code: ARM: imx6q: fix suspend regression caused by common clk migration
Problem Details: When moving to common clk framework, the imx6q clks rom and mmdc_ch1_axi get different on/off states than old clk driver, which breaks suspend function. There might be a better way to manage these clocks, but let's takes the old clk driver approach to fix the regression first. Signed-off-by: Shawn Gu...
```diff diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c index 17dc66a085a5..e1a17ac7b3b4 100644 --- a/arch/arm/mach-imx/clk-imx6q.c +++ b/arch/arm/mach-imx/clk-imx6q.c @@ -152,13 +152,14 @@ enum mx6q_clks { ssi2, ssi3, uart_ipg, uart_serial, usboh3, usdhc1, usdhc2, usdhc3, usdhc4, vdo_axi...
510df2515f6b0afdd7604aee21b02b8f339e9344
Analyze and fix the following issue in the Linux kernel code: Bluetooth: Fix warning: using int as NULL pointer
Problem Details: Fix for warnings below: ... drivers/bluetooth/bt3c_cs.c:667:20: warning: Using plain integer as NULL pointer drivers/bluetooth/btuart_cs.c:596:20: warning: Using plain integer as NULL pointer ... Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustav...
```diff diff --git a/drivers/bluetooth/bt3c_cs.c b/drivers/bluetooth/bt3c_cs.c index b2b0fbbb43b5..8925b6d672a6 100644 --- a/drivers/bluetooth/bt3c_cs.c +++ b/drivers/bluetooth/bt3c_cs.c @@ -664,7 +664,7 @@ static int bt3c_check_config(struct pcmcia_device *p_dev, void *priv_data) { int *try = priv_data; - if (try...
467d0becaf52add767e51a6de92c52a91cf546ac
Analyze and fix the following issue in the Linux kernel code: staging:iio:accel:adis16204 fix bug in channel modifier handling
Problem Details: Will result in the correct scale value for the x axis. Signed-off-by: Jonathan Cameron <jic23@kernel.org> Acked-by: Michael Hennerich <michael.hennerich@analog.com>
```diff diff --git a/drivers/staging/iio/accel/adis16204_core.c b/drivers/staging/iio/accel/adis16204_core.c index ac9d95e4ea47..457982bf7eac 100644 --- a/drivers/staging/iio/accel/adis16204_core.c +++ b/drivers/staging/iio/accel/adis16204_core.c @@ -381,7 +381,7 @@ static int adis16204_read_raw(struct iio_dev *indio_d...
05eda67d2c31f3e8d815c3fc14f4dbb612363eab
Analyze and fix the following issue in the Linux kernel code: staging:iio:ad7793: Fix scan index for the "shorted" channel
Problem Details: The code expects the scan index to match the offset of the channel into the channel array. For the "shorted" the offset is 3, but the scan index is set to 2. Also the scan index 2 is already taken by the previous channel. As a result the "shorted" channel will appear to be selected if the previous chan...
```diff diff --git a/drivers/staging/iio/adc/ad7793.c b/drivers/staging/iio/adc/ad7793.c index b36556fa2957..92d8c255d470 100644 --- a/drivers/staging/iio/adc/ad7793.c +++ b/drivers/staging/iio/adc/ad7793.c @@ -786,7 +786,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = { .address = AD7793_CH_AIN1...
ce7b04c629254b884baa338730021b01298be921
Analyze and fix the following issue in the Linux kernel code: iio staging: fix resource leak in _write_sysfs_int()
Problem Details: Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
```diff diff --git a/drivers/staging/iio/Documentation/iio_utils.h b/drivers/staging/iio/Documentation/iio_utils.h index 81a628975cdd..b38e81f4fa64 100644 --- a/drivers/staging/iio/Documentation/iio_utils.h +++ b/drivers/staging/iio/Documentation/iio_utils.h @@ -524,6 +524,7 @@ inline int _write_sysfs_int(char *filenam...
a4d429e362d873414046c78724f3d6a7978bc2fd
Analyze and fix the following issue in the Linux kernel code: iio staging: fix potential memory/resource leaks in find_type_by_name()
Problem Details: Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
```diff diff --git a/drivers/staging/iio/Documentation/iio_utils.h b/drivers/staging/iio/Documentation/iio_utils.h index ab788594b202..81a628975cdd 100644 --- a/drivers/staging/iio/Documentation/iio_utils.h +++ b/drivers/staging/iio/Documentation/iio_utils.h @@ -472,23 +472,30 @@ inline int find_type_by_name(const char...
578f737dd36989121412cf947a5b534e7b8a0ac5
Analyze and fix the following issue in the Linux kernel code: iio staging: fix potential resource leak in generic_buffer
Problem Details: Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
```diff diff --git a/drivers/staging/iio/Documentation/iio_utils.h b/drivers/staging/iio/Documentation/iio_utils.h index 6f3a392297ec..ab788594b202 100644 --- a/drivers/staging/iio/Documentation/iio_utils.h +++ b/drivers/staging/iio/Documentation/iio_utils.h @@ -157,7 +157,8 @@ inline int iioutils_get_type(unsigned *is...
5f1601261050251a5ca293378b492a69d590dacb
Analyze and fix the following issue in the Linux kernel code: acpi_pad: fix power_saving thread deadlock
Problem Details: The acpi_pad driver can get stuck in destroy_power_saving_task() waiting for kthread_stop() to stop a power_saving thread. The problem is that the isolated_cpus_lock mutex is owned when destroy_power_saving_task() calls kthread_stop(), which waits for a power_saving thread to end, and the power_saving...
```diff diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c index a43fa1a57d57..1502c50273b5 100644 --- a/drivers/acpi/acpi_pad.c +++ b/drivers/acpi/acpi_pad.c @@ -36,6 +36,7 @@ #define ACPI_PROCESSOR_AGGREGATOR_DEVICE_NAME "Processor Aggregator" #define ACPI_PROCESSOR_AGGREGATOR_NOTIFY 0x80 static DEFINE...
b03738430c7537d5f87948e0b35d8aaf2688c6b4
Analyze and fix the following issue in the Linux kernel code: ACPI video: Still use ACPI backlight control if _DOS doesn't exist
Problem Details: This fixes a regression in 3.4-rc1 caused by commit ea9f8856bd6d4ed45885b06a338f7362cd6c60e5 (ACPI video: Harden video bus adding.) Some platforms don't have _DOS control method, but the ACPI backlight still works. We should not invoke _DOS for these platforms. https://bugzilla.kernel.org/show_bug.cg...
```diff diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 9577b6fa2650..4134b300b9cd 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -558,6 +558,8 @@ acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) union acpi_object arg0 = { ACPI_TYPE_INTEGER }; struct acpi...
ae0eef66088777cf252c6b91d3eb5ef2f30a67c5
Analyze and fix the following issue in the Linux kernel code: cnic: Fix mmap regression.
Problem Details: commit 1f85d58cdf15354a7120fc9ccc9bb9c45b53af88 cnic: Remove uio mem[0]. introduced a regression as older versions of userspace app still rely on this mmap. Restore the mmap functionality and get the base address from pci_resource_start() as the nedev->base_addr has been deprecated for PCI device...
```diff diff --git a/drivers/net/ethernet/broadcom/cnic.c b/drivers/net/ethernet/broadcom/cnic.c index f897306b0eb7..22ad7b6d9048 100644 --- a/drivers/net/ethernet/broadcom/cnic.c +++ b/drivers/net/ethernet/broadcom/cnic.c @@ -1063,9 +1063,13 @@ static int cnic_init_uio(struct cnic_dev *dev) uinfo = &udev->cnic_uin...
b37d2a3a75cb0e72e18c29336cb2095b63dabfc8
Analyze and fix the following issue in the Linux kernel code: [media] i2c: Export an unlocked flavor of i2c_transfer
Problem Details: Some drivers (in particular for TV cards) need exclusive access to their I2C buses for specific operations. Export an unlocked flavor of i2c_transfer to give them full control. The unlocked flavor has the following limitations: * Obviously, caller must hold the i2c adapter lock. * No debug messages ar...
```diff diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index feb7dc359186..ccc6445979c4 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -1294,6 +1294,37 @@ module_exit(i2c_exit); * ---------------------------------------------------- */ +/** + * __i2c_transfer - unlocked flavor o...
d36208227d03c44c0a74cd702cc94528162e1703
Analyze and fix the following issue in the Linux kernel code: printk: Optimize if statement logic where newline exists
Problem Details: In reviewing Kay's fix up patch: "printk: Have printk() never buffer its data", I found two if statements that could be combined and optimized. Put together the two 'cont.len && cont.owner == current' if statements into a single one, and check if we need to call cont_add(). This also removes the unnee...
```diff diff --git a/kernel/printk.c b/kernel/printk.c index fbf4d0b22a1d..5ae6b09e3805 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -1496,15 +1496,14 @@ asmlinkage int vprintk_emit(int facility, int level, bool stored = false; /* - * Flush the conflicting buffer. An earlier newline was missing, - ...
48fdc72f23ad9a9956e524a47843135d0bbc3317
Analyze and fix the following issue in the Linux kernel code: ring-buffer: Fix accounting of entries when removing pages
Problem Details: When removing pages from the ring buffer, its state is not reset. This means that the counters need to be correctly updated to account for the pages removed. Update the overrun counter to reflect the removed events from the pages. Link: http://lkml.kernel.org/r/1340998301-1715-1-git-send-email-vnagar...
```diff diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index ba39cbabdc9f..f765465bffe4 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -1347,10 +1347,9 @@ rb_remove_pages(struct ring_buffer_per_cpu *cpu_buffer, unsigned int nr_pages) * If something was added to th...
44b99462d9d776522e174d6c531ce5ccef309e26
Analyze and fix the following issue in the Linux kernel code: ring-buffer: Fix crash due to uninitialized new_pages list head
Problem Details: The new_pages list head in the cpu_buffer is not initialized. When adding pages to the ring buffer, if the memory allocation fails in ring_buffer_resize, the clean up handler tries to free up the allocated pages from all the cpu buffers. The panic is caused by referencing the uninitialized new_pages li...
```diff diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 1d0f6a8a0e5e..ba39cbabdc9f 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -1075,6 +1075,7 @@ rb_allocate_cpu_buffer(struct ring_buffer *buffer, int nr_pages, int cpu) rb_init_page(bpage->page); INIT_LIS...
9bc8f9fe2c6e3778202c76ef85ef291567c00cb8
Analyze and fix the following issue in the Linux kernel code: perf tools: Fix generation of pmu list
Problem Details: The internal pmu list was never used. With each perf_pmu__find() call the pmu structure was created new by parsing sysfs. Beside this it caused memory leaks. We now keep all pmus by adding them to the list. Also, pmu_lookup() should return pmus that do not expose the format specifier in sysfs. We nee...
```diff diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 74d0948ec368..67715a42cd6d 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -72,7 +72,7 @@ static int pmu_format(char *name, struct list_head *format) "%s/bus/event_source/devices/%s/format", sysfs, name); if (stat(path, &...
7582732f57e547929d4c65ad8e38f3446e0538d8
Analyze and fix the following issue in the Linux kernel code: perf tools: Fix hw breakpoint's type modifier parsing
Problem Details: Fixing the hw breakpoint's type modifier parsing to allow all possible combinations of 'rwx' characters. Adding automated tests to the parsing test suite. Reported-by: Jovi Zhang <bookjovi@gmail.com> Original-patch-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc:...
```diff diff --git a/tools/perf/util/parse-events-test.c b/tools/perf/util/parse-events-test.c index a0f61a2a6835..de81fe1f9329 100644 --- a/tools/perf/util/parse-events-test.c +++ b/tools/perf/util/parse-events-test.c @@ -181,6 +181,22 @@ static int test__checkevent_breakpoint_w(struct perf_evlist *evlist) return 0;...
f526a4ce2643e2636c091cf2bf0ec1442110c5b7
Analyze and fix the following issue in the Linux kernel code: tools lib traceevent: Fix clean target in Makefile
Problem Details: Dependency files were not cleaned up. Add missing space to fix the issue. Signed-off-by: Konstantin Stepanyuk <konstantin.stepanyuk@gmail.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.o...
```diff diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile index 3d69aa9ff51e..423f4b81ecce 100644 --- a/tools/lib/traceevent/Makefile +++ b/tools/lib/traceevent/Makefile @@ -290,7 +290,7 @@ install_lib: all_cmd install_plugins install_python install: install_lib clean: - $(RM) *.o *~ $(TARG...
d660e9b92b44f113c3fc345a8ce66ffa56a3506f
Analyze and fix the following issue in the Linux kernel code: ARM: OMAP2+: PM: fix IRQ_NOAUTOEN removal by mis-merge
Problem Details: commit 99b59df0 (ARM: OMAP3: PM: fix shared PRCM interrupt leave disabled at boot) added IRQ_NOAUTOEN to the PRCM interrupt so it could be enabled later if needed. However, this commit was partially undone when merging the IO daisy chain rework in 9a17d88e (Merge tag 'omap-devel-c-for-3.6' of git://gi...
```diff diff --git a/arch/arm/mach-omap2/prm2xxx_3xxx.c b/arch/arm/mach-omap2/prm2xxx_3xxx.c index e10fd1e9446b..a0309dea6794 100644 --- a/arch/arm/mach-omap2/prm2xxx_3xxx.c +++ b/arch/arm/mach-omap2/prm2xxx_3xxx.c @@ -351,11 +351,16 @@ static void __init omap3xxx_prm_enable_io_wakeup(void) static int __init omap3xx...
c21b328ea8c7c71cd2daf50557db440bbaa7ef55
Analyze and fix the following issue in the Linux kernel code: drm/radeon: fix VM page table setup on SI
Problem Details: Cayman and trinity allow for variable sized VM page tables, but SI requires that all page tables be the same size. The current code assumes variablely sized VM page tables so SI may end up with part of each page table overlapping with other memory which could end up being interpreted by the VM hw as g...
```diff diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c index 59d44937dd9f..84b648a7ddd8 100644 --- a/drivers/gpu/drm/radeon/radeon_gart.c +++ b/drivers/gpu/drm/radeon/radeon_gart.c @@ -289,8 +289,9 @@ int radeon_vm_manager_init(struct radeon_device *rdev) rdev->vm_manager.ena...
7d4fa100b0cc069b2d788e1d9fe086e9e057958e
Analyze and fix the following issue in the Linux kernel code: Input: atmel_mxt_ts - refactor when and how object table is freed
Problem Details: The Object Table is freed in three cases: 1) When the driver is being removed. 2) In the error path of mxt_initialize(). 3) Just after a firmware update, when a new object table is about to be read. For cases 2 & 3, the driver is not immediately unloaded, so this patch refactors these cases...
```diff diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index d6b64a0fed45..488e3e88c3fc 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -750,6 +750,12 @@ static int mxt_get_object_table(struct mxt_data *data) ret...
b2e459b81b33ca17052de03b1315d8511d769507
Analyze and fix the following issue in the Linux kernel code: Input: atmel_mxt_ts - add detail to touchevent debug message
Problem Details: Update the debug message: * print inidividual status bits * print the pressure value * use '%u' for unsigned quantities Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
```diff diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index c37584de49ca..d6b64a0fed45 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -195,6 +195,7 @@ #define MXT_BOOT_STATUS_MASK 0x3f /* Touch status */ +#de...
bb0adf6ca6c78758c12b054fe3f25023033072ab
Analyze and fix the following issue in the Linux kernel code: ARM: OMAP2+: do not allow SmartReflex to be built as a module
Problem Details: Disable the module option for POWER_AVS since this is currently not supported. This patch fixes these error in the case POWER_AVS is set to 'm': arch/arm/mach-omap2/built-in.o: In function `sr_class3_configure': arch/arm/mach-omap2/smartreflex-class3.c:43: undefined reference to `sr_configure_errgen'...
```diff diff --git a/drivers/power/avs/Kconfig b/drivers/power/avs/Kconfig index 18493f7a8f6f..2a1008b61121 100644 --- a/drivers/power/avs/Kconfig +++ b/drivers/power/avs/Kconfig @@ -1,5 +1,5 @@ menuconfig POWER_AVS - tristate "Adaptive Voltage Scaling class support" + bool "Adaptive Voltage Scaling class support" h...
e0246e8ecad10b9437381b89756292ac031d4cfa
Analyze and fix the following issue in the Linux kernel code: ARM: OMAP2+: fix CONFIG_CPU_IDLE dependency on CONFIG_PM
Problem Details: commit 164e0cbf60 (ARM: OMAP3/4: consolidate cpuidle Makefile) added an OMAP-specific dependency from CPU_IDLE to CONFIG_PM. This causes some randconfig warnings when CONFIG_PM has unmet dependencies: warning: (ARCH_OMAP3 && ARCH_OMAP4) selects PM which has unmet direct dependencies (PM_SLEEP || PM_R...
```diff diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index cf84588cd110..2f4ace6f91d1 100644 --- a/arch/arm/mach-omap2/Kconfig +++ b/arch/arm/mach-omap2/Kconfig @@ -35,7 +35,7 @@ config ARCH_OMAP3 select CPU_V7 select USB_ARCH_HAS_EHCI if USB_SUPPORT select ARCH_HAS_OPP - select PM if CP...
346c265a48169d73a69c88ce9d6b65e6bb3b1f20
Analyze and fix the following issue in the Linux kernel code: iwlwifi: fix debug message level
Problem Details: Debug messages should be printed using dev_dbg() not dev_err() which requires DEBUG to be defined. Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
```diff diff --git a/drivers/net/wireless/iwlwifi/iwl-debug.c b/drivers/net/wireless/iwlwifi/iwl-debug.c index 0f8fcd1d4fe2..87535a67de76 100644 --- a/drivers/net/wireless/iwlwifi/iwl-debug.c +++ b/drivers/net/wireless/iwlwifi/iwl-debug.c @@ -61,6 +61,9 @@ * *********************************************************...
4009e18851ea555959c6017d848983b3d60bf667
Analyze and fix the following issue in the Linux kernel code: netfilter: nfnetlink: fix missing rcu_read_unlock in nfnetlink_rcv_msg
Problem Details: Bug added in commit 6b75e3e8d664a9a (netfilter: nfnetlink: add RCU in nfnetlink_rcv_msg()) Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
```diff diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c index 3e797d1fcb94..791d56bbd74a 100644 --- a/net/netfilter/nfnetlink.c +++ b/net/netfilter/nfnetlink.c @@ -169,8 +169,10 @@ replay: err = nla_parse(cda, ss->cb[cb_id].attr_count, attr, attrlen, ss->cb[cb_id].policy); - if (err < 0) +...
d31f4d448f7671dc3e6a7a1c92a4c085a36058bb
Analyze and fix the following issue in the Linux kernel code: netfilter: ipset: fix crash if IPSET_CMD_NONE command is sent
Problem Details: This patch fixes a crash if that ipset command is sent over nfnetlink. Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com> Acked-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
```diff diff --git a/net/netfilter/ipset/ip_set_core.c b/net/netfilter/ipset/ip_set_core.c index 819c342f5b30..9730882697aa 100644 --- a/net/netfilter/ipset/ip_set_core.c +++ b/net/netfilter/ipset/ip_set_core.c @@ -639,6 +639,14 @@ find_free_id(const char *name, ip_set_id_t *index, struct ip_set **set) return 0; } ...
1e0b6eac6a150a35b45d019681b0021896354ae5
Analyze and fix the following issue in the Linux kernel code: xen/netback: only non-freed SKB is queued into tx_queue
Problem Details: After SKB is queued into tx_queue, it will be freed if request_gop is NULL. However, no dequeue action is called in this situation, it is likely that tx_queue constains freed SKB. This patch should fix this issue, and it is based on 3.5.0-rc4+. This issue is found through code inspection, no bug is se...
```diff diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index f4a6fcaeffb1..682633bfe00f 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -1363,8 +1363,6 @@ static unsigned xen_netbk_tx_build_gops(struct xen_netbk *netbk) INVALID_PEN...
7fa8ad6df71f4778b23e17b0106aaef02b518684
Analyze and fix the following issue in the Linux kernel code: caif-hsi: Fix merge issues.
Problem Details: Fix the failing merge in net-next by reverting the last net-next merge for caif_hsi.c and then merge in the commit: "caif-hsi: Bugfix - Piggyback'ed embedded CAIF frame lost" from the net repository. The commit:"caif-hsi: Add missing return in error path" from net repository was dropped, as it changed...
```diff diff --git a/drivers/net/caif/caif_hsi.c b/drivers/net/caif/caif_hsi.c index 087eb83454c0..0def8b3106f4 100644 --- a/drivers/net/caif/caif_hsi.c +++ b/drivers/net/caif/caif_hsi.c @@ -1131,51 +1131,7 @@ static void cfhsi_setup(struct net_device *dev) cfhsi->cfdev.use_stx = false; cfhsi->cfdev.use_fcs = false...
8663ff75cdca0a66f808e124c5592735793926af
Analyze and fix the following issue in the Linux kernel code: ALSA: hda - Fix no sound from ALC662 after Windows reboot
Problem Details: Windows use hidden register to control EAPD. Linux use verb to control EAPD. If windows reboot to Linux, it must change the EAPD control to verb control. Signed-off-by: Kailang Yang <kailang@realtek.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
```diff diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 5ccf10a4d593..aa4c25e0f327 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -6688,6 +6688,31 @@ static const struct alc_model_fixup alc662_fixup_models[] = { {} }; +static void alc662_fill_coef...
c9fe573a6584034670c1a55ee8162d623519cbbf
Analyze and fix the following issue in the Linux kernel code: ASoC: tlv320aic3x: Fix codec pll configure bug
Problem Details: In sound/soc/codecs/tlv320aic3x.c data = snd_soc_read(codec, AIC3X_PLL_PROGA_REG); snd_soc_write(codec, AIC3X_PLL_PROGA_REG, data | (pll_p << PLLP_SHIFT)); In the above code, pll-p value is OR'ed with previous value without clearing it. Bug is not seen if pll-p v...
```diff diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c index 64d2a4fa34b2..e9b62b5ea637 100644 --- a/sound/soc/codecs/tlv320aic3x.c +++ b/sound/soc/codecs/tlv320aic3x.c @@ -935,9 +935,7 @@ static int aic3x_hw_params(struct snd_pcm_substream *substream, } found: - data = snd_soc_read(c...
bd5a7b11a0bfd172b4cd6ef3e01e6beb1753c3f1
Analyze and fix the following issue in the Linux kernel code: OMAPDSS: DSI: Fix HSYNC, VSYNC and DE polarities between DISPC and DSI
Problem Details: For DSI operation in videomode, DISPC logic levels for the signals HSYNC, VSYNC and DE need to be specified to DSI via the fields VP_HSYNC_POL, VP_VSYNC_POL and VP_DE_POL in DSI_CTRL registers. This information is completely internal to DSS as logic levels for the above signals hold no meaning on the ...
```diff diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 06b578036497..e0d43b275e3e 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -3631,17 +3631,14 @@ static void dsi_config_vp_num_line_buffers(struct omap_dss_device *dssdev) static void dsi_config_vp...
8a720718b37d00cf8ab311902705ae7c7890bb95
Analyze and fix the following issue in the Linux kernel code: ASoC: dapm: Fix snd_soc_dapm_put_volsw() connect
Problem Details: snd_soc_dapm_put_volsw() sets connect incorrectly in the case max > 1 with invert. In that case, the raw disconnect value should be max, which corresponds to the userspace value 0. This use case currently does not appear upstream, but it could break SOC_DAPM_SINGLE() or SOC_DAPM_SINGLE_TLV() elsewhere...
```diff diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index c2206bc835da..967066873aad 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -2515,19 +2515,13 @@ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, int wi; val = (ucontrol->value.integer.value[0] & mask); + connect = !!va...
6f1891fc70d99eef9877925821572b8a3c5d9fd5
Analyze and fix the following issue in the Linux kernel code: OMAPDSS: Add dump and debug support for LCD3
Problem Details: DISPC functions have been modified to provide clock and register dumps and debug support for the LCD3 manager. Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
```diff diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c index d19665e74e72..e48d1c10a3cf 100644 --- a/drivers/video/omap2/dss/dispc.c +++ b/drivers/video/omap2/dss/dispc.c @@ -2853,12 +2853,32 @@ unsigned long dispc_core_clk_rate(void) return fclk / lcd; } -void dispc_dump_clocks(str...
5be3aebd09f384fa2db8dda4fd99b73fc4be64f1
Analyze and fix the following issue in the Linux kernel code: OMAPDSS: fix warnings if CONFIG_PM_RUNTIME=n
Problem Details: If runtime PM is not enabled in the kernel config, pm_runtime_get_sync() will always return 1 and pm_runtime_put_sync() will always return -ENOSYS. pm_runtime_get_sync() returning 1 presents no problem to the driver, but -ENOSYS from pm_runtime_put_sync() causes the driver to print a warning. One opti...
```diff diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c index 4749ac356469..397d4eee11bb 100644 --- a/drivers/video/omap2/dss/dispc.c +++ b/drivers/video/omap2/dss/dispc.c @@ -384,7 +384,7 @@ void dispc_runtime_put(void) DSSDBG("dispc_runtime_put\n"); r = pm_runtime_put_sync(&dispc....
bc6dc752f35488160ffac07ae91bed1bddaea32a
Analyze and fix the following issue in the Linux kernel code: powerpc/pseries: Fix software invalidate TCE
Problem Details: The following added support for powernv but broke pseries/BML: 1f1616e powerpc/powernv: Add TCE SW invalidation support TCE_PCI_SW_INVAL was split into FREE and CREATE flags but the tests in the pseries code were not updated to reflect this. Signed-off-by: Michael Neuling <mikey@neuling.org> cc: sta...
```diff diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index 0915b1ad66ce..2d311c0caf8e 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -106,7 +106,7 @@ static int tce_build_pSeries(struct iommu_table *tbl, long index, ...
0b17ba7258db83cd02da560884e053b85de371f2
Analyze and fix the following issue in the Linux kernel code: powerpc: check_and_cede_processor() never cedes
Problem Details: Commit f948501b36c6 ("Make hard_irq_disable() actually hard-disable interrupts") caused check_and_cede_processor to stop working. ->irq_happened will never be zero right after a hard_irq_disable so the compiler removes the call to cede_processor completely. The bug was introduced back in the lazy inte...
```diff diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h index 32b394f3b854..6eb75b80488c 100644 --- a/arch/powerpc/include/asm/hw_irq.h +++ b/arch/powerpc/include/asm/hw_irq.h @@ -103,6 +103,11 @@ static inline void hard_irq_disable(void) /* include/linux/interrupt.h needs hard_irq_d...
2d773aa4810d4a612d1c879faacc38594cc3f841
Analyze and fix the following issue in the Linux kernel code: powerpc/ftrace: Do not trace restore_interrupts()
Problem Details: As I was adding code that affects all archs, I started testing function tracer against PPC64 and found that it currently locks up with 3.4 kernel. I figured it was due to tracing a function that shouldn't be, so I went through the following process to bisect to find the culprit: cat /debug/tracing/av...
```diff diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 7835a5e1ea5f..1b415027ec0e 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -277,7 +277,7 @@ EXPORT_SYMBOL(arch_local_irq_restore); * NOTE: This is called with interrupts hard disabled but not marked * as such ...
2cb387ae758d97ee7396a82528c824b8dc510b8a
Analyze and fix the following issue in the Linux kernel code: powerpc: Fix Section mismatch warnings in prom_init.c
Problem Details: This patches tries to fix a couple of Section mismatch warnings like following one: WARNING: arch/powerpc/kernel/built-in.o(.text+0x2923c): Section mismatch in reference from the function .prom_query_opal() to the function .init.text:.call_prom() The function .prom_query_opal() references the function...
```diff diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 1b488e5305c5..0794a3017b1b 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -1312,7 +1312,7 @@ static struct opal_secondary_data { extern char opal_secondary_entry; -static void prom_qu...
c58ce2b1e3c75c55e7ebf751afce9f5a30f60b42
Analyze and fix the following issue in the Linux kernel code: ppc64: fix missing to check all bits of _TIF_USER_WORK_MASK in preempt
Problem Details: In entry_64.S version of ret_from_except_lite, you'll notice that in the !preempt case, after we've checked MSR_PR we test for any TIF flag in _TIF_USER_WORK_MASK to decide whether to go to do_work or not. However, in the preempt case, we do a convoluted trick to test SIGPENDING only if PR was set and ...
```diff diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index ed1718feb9d9..5971c85df136 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -558,27 +558,54 @@ _GLOBAL(ret_from_except_lite) mtmsrd r10,1 /* Update machine state */ #endif /* CONFIG_PPC_BO...
82b2521d257b5c0efd51821cf5fa306e53bbb6ba
Analyze and fix the following issue in the Linux kernel code: powerpc: Fix uninitialised error in numa.c
Problem Details: chroma_defconfig currently gives me this with gcc 4.6: arch/powerpc/mm/numa.c:638:13: error: 'dm' may be used uninitialized in this function [-Werror=uninitialized] It's a bogus warning/error since of_get_drconf_memory() only writes it anyway. Signed-off-by: Michael Neuling <mikey@neuling.org> cc: ...
```diff diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index b6edbb3b4a54..6e8f677f5646 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -635,7 +635,7 @@ static inline int __init read_usm_ranges(const u32 **usm) */ static void __init parse_drconf_memory(struct device_node *memory) {...
7784655acc5a946aac49af423cc1099c5d593d73
Analyze and fix the following issue in the Linux kernel code: powerpc: Fix BPF_JIT code to link with multiple TOCs
Problem Details: If the kernel is big enough (eg. allyesconfig), the linker may need to switch TOCs when calling from the BPF JIT code out to the external helpers (skb_copy_bits() & bpf_internal_load_pointer_neg_helper()). In order to do that we need to leave space after the bl for the linker to insert a reload of our...
```diff diff --git a/arch/powerpc/net/bpf_jit_64.S b/arch/powerpc/net/bpf_jit_64.S index 55ba3855a97f..7d3a3b5619a2 100644 --- a/arch/powerpc/net/bpf_jit_64.S +++ b/arch/powerpc/net/bpf_jit_64.S @@ -105,6 +105,7 @@ sk_load_byte_msh_positive_offset: mr r4, r_addr; \ li r6, SIZE; \ bl skb_copy_bits; \ +...
a207a4b2e8067cbc7f33924e7f2c0fa4ef43b459
Analyze and fix the following issue in the Linux kernel code: ipv4: Fix bugs in fib_compute_spec_dst().
Problem Details: Based upon feedback from Julian Anastasov. 1) Use route flags to determine multicast/broadcast, not the packet flags. 2) Leave saddr unspecified in flow key. 3) Adjust how we invoke inet_select_addr(). Pass ip_hdr(skb)->saddr as second arg, and if it was zeronet use link scope. 4) Use loopba...
```diff diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c index 63b11ca54d95..1d13217e01ff 100644 --- a/net/ipv4/fib_frontend.c +++ b/net/ipv4/fib_frontend.c @@ -185,28 +185,36 @@ __be32 fib_compute_spec_dst(struct sk_buff *skb) struct net_device *dev = skb->dev; struct in_device *in_dev; struct fib_...
f1cefa855f6e7d10dd49724ede771b8f0c2a90e7
Analyze and fix the following issue in the Linux kernel code: ARM: mxs/tx28: fix odd include
Problem Details: arch/arm/mach-mxs/module-tx28.c includes "../devices-mx28.h". That's a bit odd, because that header can be found in the same directory. This only works because arch/arm/mach-mxs/include should be in the header search path for this file. Nevertheless, this file can simply include "device-mx28.h" (just a...
```diff diff --git a/arch/arm/mach-mxs/module-tx28.c b/arch/arm/mach-mxs/module-tx28.c index 9a7b08b2a925..0f71f82101cc 100644 --- a/arch/arm/mach-mxs/module-tx28.c +++ b/arch/arm/mach-mxs/module-tx28.c @@ -11,7 +11,7 @@ #include <linux/gpio.h> #include <mach/iomux-mx28.h> -#include "../devices-mx28.h" +#include "d...
3840a06e6046aaee95f33a120499d2dc8c054b9d
Analyze and fix the following issue in the Linux kernel code: tcp: pass fl6 to inet6_csk_route_req()
Problem Details: This commit changes inet_csk_route_req() so that it uses a pointer to a struct flowi6, rather than allocating its own on the stack. This brings its behavior in line with its IPv4 cousin, inet_csk_route_req(), and allows a follow-on patch to fix a dst leak. Signed-off-by: Neal Cardwell <ncardwell@googl...
```diff diff --git a/include/net/inet6_connection_sock.h b/include/net/inet6_connection_sock.h index 1866a676c810..df2a857e853d 100644 --- a/include/net/inet6_connection_sock.h +++ b/include/net/inet6_connection_sock.h @@ -26,6 +26,7 @@ extern int inet6_csk_bind_conflict(const struct sock *sk, const struct inet...
9247869ee661b046510c19a36cf0d91d9c2639d3
Analyze and fix the following issue in the Linux kernel code: tcp: fix inet6_csk_route_req() for link-local addresses
Problem Details: Fix inet6_csk_route_req() to use as the flowi6_oif the treq->iif, which is correctly fixed up in tcp_v6_conn_request() to handle the case of link-local addresses. This brings it in line with the tcp_v6_send_synack() code, which is already correctly using the treq->iif in this way. Signed-off-by: Neal ...
```diff diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c index e6cee5292a0b..e23d35424ca9 100644 --- a/net/ipv6/inet6_connection_sock.c +++ b/net/ipv6/inet6_connection_sock.c @@ -68,7 +68,7 @@ struct dst_entry *inet6_csk_route_req(struct sock *sk, fl6.daddr = treq->rmt_addr; final_p ...
76fbc247b9aebc30f6d2c8ec1f69edcb68eaa328
Analyze and fix the following issue in the Linux kernel code: davinci_cpdma: include linux/module.h
Problem Details: This fixes a number of warnings such as: CC drivers/net/ethernet/ti/davinci_cpdma.o drivers/net/ethernet/ti/davinci_cpdma.c:279:1: warning: data definition has no type or storage class drivers/net/ethernet/ti/davinci_cpdma.c:279:1: warning: type defaults to ‘int’ in declaration of ‘EXPORT_SYMBO...
```diff diff --git a/drivers/net/ethernet/ti/davinci_cpdma.c b/drivers/net/ethernet/ti/davinci_cpdma.c index d614c374ed9d..3b5c4571b55e 100644 --- a/drivers/net/ethernet/ti/davinci_cpdma.c +++ b/drivers/net/ethernet/ti/davinci_cpdma.c @@ -15,6 +15,7 @@ #include <linux/kernel.h> #include <linux/spinlock.h> #include <...
61c91dd4a58b21a783e37208f4d02e3cb4b637c4
Analyze and fix the following issue in the Linux kernel code: Input: wacom - fix retrieving touch_max bug
Problem Details: rep_data is not an array anymore, so taking it's address when passing to wacom_get_report() is wrong. Signed-off-by: Ping Cheng <pingc@wacom.com> Tested-by: Rafi Rubin <rafi@seas.upenn.edu> Reviewed-by: Jason Gerecke <killertofu@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
```diff diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c index b3a8bd3514b2..23a933da75cd 100644 --- a/drivers/input/tablet/wacom_sys.c +++ b/drivers/input/tablet/wacom_sys.c @@ -213,7 +213,7 @@ static void wacom_retrieve_report_data(struct usb_interface *intf, rep_data[0] = 12; ...
9740e001932f59ee007d13ee3f39bb1b61086651
Analyze and fix the following issue in the Linux kernel code: gianfar: Fix RXICr/TXICr programming for multi-queue mode
Problem Details: The correct behavior is to program the interrupt coalescing regs (RXICr/TXICr) in accordance with the Rx/Tx Q's "rx/txcoalescing" flag. That is, if the coalescing flag is 0 for a given Rx/Tx queue then the corresponding coalescing register should be cleared. This behavior is correctly implemented for t...
```diff diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index 0741aded9eb0..f2db8fca46a1 100644 --- a/drivers/net/ethernet/freescale/gianfar.c +++ b/drivers/net/ethernet/freescale/gianfar.c @@ -1804,18 +1804,16 @@ void gfar_configure_coalescing(struct gfar_private *priv,...
d9b8706843a501034d09bea63ca6723a2ed02b11
Analyze and fix the following issue in the Linux kernel code: net: qmi_wwan: fix Oops while disconnecting
Problem Details: usbnet_disconnect() will set intfdata to NULL before calling the minidriver unbind function. The cdc_wdm subdriver cannot know that it is disconnecting until the qmi_wwan unbind function has called its disconnect function. This means that we must be able to support the cdc_wdm subdriver operating nor...
```diff diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index 3767a1225860..b01960fcfbc9 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -197,6 +197,10 @@ err: static int qmi_wwan_cdc_wdm_manage_power(struct usb_interface *intf, int on) { struct usbnet *dev = usb_get...
64bd577ea0021f5903505de061b3b7d8a785ee94
Analyze and fix the following issue in the Linux kernel code: NFS: Let xdr_read_pages() check for buffer overflows
Problem Details: xdr_read_pages will already do all of the buffer overflow checks that are currently being open-coded in the various callers. This patch simplifies the existing code by replacing the open coded checks. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
```diff diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c index db81166182c9..d04f0df7be55 100644 --- a/fs/nfs/nfs2xdr.c +++ b/fs/nfs/nfs2xdr.c @@ -106,19 +106,16 @@ static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) static int decode_nfsdata(struct xdr_stream *xdr, struct nfs_readres *resul...
e486fad9136dce21f5ba4322ae0454d23805d342
Analyze and fix the following issue in the Linux kernel code: drm/i915: fix PIPE_WM_LINETIME definition
Problem Details: Looks like a copy/paste error. Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
```diff diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 9dfc4c5ff31e..ac65e96ea98e 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -4435,7 +4435,7 @@ #define PIPE_WM_LINETIME_B 0x45274 #define PIPE_WM_LINETIME(pipe) _PIPE(pipe, \ PIPE_W...