linux/drivers, branch v3.16

Merge tag 'staging-3.16-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

2014-08-02T00:16:05Z

Pull staging driver bugfixes from Greg KH: "Here are some tiny staging driver bugfixes that I've had in my tree for the past week that resolve some reported issues. Nothing major at all, but it would be good to get them merged for 3.16-rc8 or -final" * tag 'staging-3.16-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: staging: vt6655: Fix disassociated messages every 10 seconds staging: vt6655: Fix Warning on boot handle_irq_event_percpu. staging: rtl8723au: rtw_resume(): release semaphore before exit on error iio:bma180: Missing check for frequency fractional part iio:bma180: Fix scale factors to report correct acceleration units iio: buffer: Fix demux table creation

Merge tag 'dm-3.16-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

2014-08-01T19:50:05Z

Pull device mapper fixes from Mike Snitzer: "Fix dm bufio shrinker to properly zero-fill all fields. Fix race in dm cache that caused improper reporting of the number of dirty blocks in the cache" * tag 'dm-3.16-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm cache: fix race affecting dirty block count dm bufio: fully initialize shrinker

dm cache: fix race affecting dirty block count

2014-08-01T16:25:22Z

nr_dirty is updated without locking, causing it to drift so that it is non-zero (either a small positive integer, or a very large one when an underflow occurs) even when there are no actual dirty blocks. This was due to a race between the workqueue and map function accessing nr_dirty in parallel without proper protection. People were seeing under runs due to a race on increment/decrement of nr_dirty, see: https://lkml.org/lkml/2014/6/3/648 Fix this by using an atomic_t for nr_dirty. Reported-by: roma1390@gmail.com Signed-off-by: Anssi Hannula Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org

dm bufio: fully initialize shrinker

2014-08-01T16:07:21Z

1d3d4437eae1 ("vmscan: per-node deferred work") added a flags field to struct shrinker assuming that all shrinkers were zero filled. The dm bufio shrinker is not zero filled, which leaves arbitrary kmalloc() data in flags. So far the only defined flags bit is SHRINKER_NUMA_AWARE. But there are proposed patches which add other bits to shrinker.flags (e.g. memcg awareness). Rather than simply initializing the shrinker, this patch uses kzalloc() when allocating the dm_bufio_client to ensure that the embedded shrinker and any other similar structures are zeroed. This fixes theoretical over aggressive shrinking of dm bufio objects. If the uninitialized dm_bufio_client.shrinker.flags contains SHRINKER_NUMA_AWARE then shrink_slab() would call the dm shrinker for each numa node rather than just once. This has been broken since 3.12. Signed-off-by: Greg Thelen Acked-by: Mikulas Patocka Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org # v3.12+

Merge tag 'pm+acpi-3.16-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2014-07-31T23:42:10Z

Pull ACPI fix from Rafael Wysocki: "One commit that fixes a problem causing PNP devices to be associated with wrong ACPI device objects sometimes during device enumeration due to an incorrect check in a matching function. That problem was uncovered by the ACPI device enumeration rework in 3.14" * tag 'pm+acpi-3.16-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI / PNP: Fix acpi_pnp_match()

Merge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux

2014-07-31T17:02:15Z

Pull clock driver fix from Mike Turquette: "A single patch to re-enable audio which is broken on all DRA7 SoC-based platforms. Missed this one from the last set of fixes" * tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux: clk: ti: clk-7xx: Correct ABE DPLL configuration

Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

2014-07-31T17:00:42Z

Pull SCSI barrier fix from James Bottomley: "This is a potential data corruption fix: If we get an error sending down a barrier, we simply ignore it meaning the barrier semantics get violated without anyone being any the wiser. If the system crashes at this point, the filesystem potentially becomes corrupt. Fix is to report errors on failed barriers" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: handle flush errors properly

clk: ti: clk-7xx: Correct ABE DPLL configuration

2014-07-31T15:36:58Z

ABE DPLL frequency need to be lowered from 361267200 to 180633600 to facilitate the ATL requironments. The dpll_abe_m2x2_ck clock need to be set to double of ABE DPLL rate in order to have correct clocks for audio. Signed-off-by: Peter Ujfalusi Acked-by: Tero Kristo Signed-off-by: Mike Turquette

rapidio/tsi721_dma: fix failure to obtain transaction descriptor

2014-07-31T00:16:13Z

This is a bug fix for the situation when function tsi721_desc_get() fails to obtain a free transaction descriptor. The bug usually results in a memory access crash dump when data transfer scatter-gather list has more entries than size of hardware buffer descriptors ring. This fix ensures that error is properly returned to a caller instead of an invalid entry. This patch is applicable to kernel versions starting from v3.5. Signed-off-by: Alexandre Bounine Cc: Matt Porter Cc: Andre van Herk Cc: Stef van Os Cc: Vinod Koul Cc: Dan Williams Cc: [3.5+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux

2014-07-30T16:01:04Z

Pull Exynos platform DT fix from Grant Likely: "Device tree Exynos bug fix for v3.16-rc7 This bug fix has been brewing for a while. I hate sending it to you so late, but I only got confirmation that it solves the problem this past weekend. The diff looks big for a bug fix, but the majority of it is only executed in the Exynos quirk case. Unfortunately it required splitting early_init_dt_scan() in two and adding quirk handling in the middle of it on ARM. Exynos has buggy firmware that puts bad data into the memory node. Commit 1c2f87c22566 ("ARM: Get rid of meminfo") exposed the bug by dropping the artificial upper bound on the number of memory banks that can be added. Exynos fails to boot after that commit. This branch fixes it by splitting the early DT parse function and inserting a fixup hook. Exynos uses the hook to correct the DT before parsing memory regions" * tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux: arm: Add devicetree fixup machine function of: Add memory limiting function for flattened devicetrees of: Split early_init_dt_scan into two parts