firefly-linux-kernel-4.4.55.git
10 years agoMerge branch 'linux-linaro-lsk' into linux-linaro-lsk-android
Alex Shi [Thu, 19 Dec 2013 05:51:33 +0000 (13:51 +0800)]
Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-android

10 years agoMerge branch 'v3.10/topic/big.LITTLE' into linux-linaro-lsk
Alex Shi [Thu, 19 Dec 2013 05:48:16 +0000 (13:48 +0800)]
Merge branch 'v3.10/topic/big.LITTLE' into linux-linaro-lsk

10 years agoMerge branch 'linux-linaro-lsk' into linux-linaro-lsk-android
Mark Brown [Tue, 17 Dec 2013 21:01:41 +0000 (21:01 +0000)]
Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-android

10 years agoMerge remote-tracking branch 'lsk/v3.10/topic/misc' into linux-linaro-lsk
Mark Brown [Tue, 17 Dec 2013 21:01:28 +0000 (21:01 +0000)]
Merge remote-tracking branch 'lsk/v3.10/topic/misc' into linux-linaro-lsk

10 years agoarm64: pgtable: Include <asm/types.h>
Mark Brown [Tue, 17 Dec 2013 20:59:55 +0000 (20:59 +0000)]
arm64: pgtable: Include <asm/types.h>

arch/arm64/include/asm/pgtable-3level-types.h uses Linux-specific types
but doesn't include the header defining them causing build failures if
it's not pulled in by some other header first.  Fix that by adding the
required include.

Signed-off-by: Mark Brown <broonie@linaro.org>
10 years agoMerge branch 'linux-linaro-lsk' into linux-linaro-lsk-android
Mark Brown [Tue, 17 Dec 2013 20:54:30 +0000 (20:54 +0000)]
Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-android

10 years agoMerge remote-tracking branch 'lsk/v3.10/topic/configs' into linux-linaro-lsk
Mark Brown [Tue, 17 Dec 2013 20:54:00 +0000 (20:54 +0000)]
Merge remote-tracking branch 'lsk/v3.10/topic/configs' into linux-linaro-lsk

10 years agoconfigs: vexpress64: Update to 8 CPUs
Mark Brown [Tue, 17 Dec 2013 20:53:11 +0000 (20:53 +0000)]
configs: vexpress64: Update to 8 CPUs

For the 4x4 fast model.

Signed-off-by: Mark Brown <broonie@linaro.org>
10 years agoMerge branch 'linux-linaro-lsk' into linux-linaro-lsk-android
Mark Brown [Mon, 16 Dec 2013 16:28:09 +0000 (16:28 +0000)]
Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-android

10 years agoMerge remote-tracking branch 'lsk/v3.10/topic/arm64-fvp' into linux-linaro-lsk
Mark Brown [Mon, 16 Dec 2013 16:27:59 +0000 (16:27 +0000)]
Merge remote-tracking branch 'lsk/v3.10/topic/arm64-fvp' into linux-linaro-lsk

10 years agoarm64: dts: Add properties required for CLCD enumeration
Mark Brown [Mon, 16 Dec 2013 16:26:36 +0000 (16:26 +0000)]
arm64: dts: Add properties required for CLCD enumeration

Signed-off-by: Mark Brown <broonie@linaro.org>
10 years agoMerge remote-tracking branch 'lsk/v3.10/topic/aosp-warnings' into linux-linaro-lsk...
Mark Brown [Fri, 13 Dec 2013 18:53:19 +0000 (18:53 +0000)]
Merge remote-tracking branch 'lsk/v3.10/topic/aosp-warnings' into linux-linaro-lsk-android

10 years agoMerge remote-tracking branch 'lsk/v3.10/topic/aosp' into linux-linaro-lsk-android
Mark Brown [Fri, 13 Dec 2013 18:52:59 +0000 (18:52 +0000)]
Merge remote-tracking branch 'lsk/v3.10/topic/aosp' into linux-linaro-lsk-android

Conflicts:
drivers/staging/android/ion/ion_chunk_heap.c
kernel/printk.c

10 years agoMerge branch 'android-3.10' of https://android.googlesource.com/kernel/common into...
Mark Brown [Fri, 13 Dec 2013 18:50:12 +0000 (18:50 +0000)]
Merge branch 'android-3.10' of https://android.googlesource.com/kernel/common into lsk-v3.10-aosp

10 years agonetfilter: fix function return types for 64bit
Mark Hambleton [Fri, 29 Nov 2013 13:44:53 +0000 (13:44 +0000)]
netfilter: fix function return types for 64bit

Fix functions to return ssize_t instead of int to match
prototypes.

Signed-off-by: Mark Hambleton <mahamble@broadcom.com>
Reviewed-by: Edwin Chan <echan@broadcom.com>
Reviewed-by: James King <jamesk@broadcom.com>
Reviewed-by: John Garry <jgarry@broadcom.com>
Reviewed-by: Mark Hambleton <mark.hambleton@broadcom.com>
Reviewed-by: Joyjit Nath <joyjit@broadcom.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
10 years agoMerge branch 'linux-linaro-lsk' into linux-linaro-lsk-android
Mark Brown [Fri, 13 Dec 2013 17:25:16 +0000 (17:25 +0000)]
Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-android

10 years agoMerge remote-tracking branch 'lsk/v3.10/topic/arm64-hmp' into linux-linaro-lsk
Mark Brown [Fri, 13 Dec 2013 17:24:35 +0000 (17:24 +0000)]
Merge remote-tracking branch 'lsk/v3.10/topic/arm64-hmp' into linux-linaro-lsk

10 years agoarm64: Enable HMP for ARMv8
Mark Hambleton [Wed, 27 Nov 2013 13:30:29 +0000 (13:30 +0000)]
arm64: Enable HMP for ARMv8

Signed-off-by: Mark Hambleton <mahamble@broadcom.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
10 years agoMerge branch 'linux-linaro-lsk' into linux-linaro-lsk-android
Mark Brown [Fri, 13 Dec 2013 12:31:39 +0000 (12:31 +0000)]
Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-android

10 years agoMerge remote-tracking branch 'lsk/v3.10/topic/arm64-cpu' into linux-linaro-lsk
Mark Brown [Fri, 13 Dec 2013 12:28:13 +0000 (12:28 +0000)]
Merge remote-tracking branch 'lsk/v3.10/topic/arm64-cpu' into linux-linaro-lsk

10 years agoARM64: DT: define ARM64 specific arch_match_cpu_phys_id
Sudeep KarkadaNagesha [Mon, 21 Oct 2013 12:29:42 +0000 (13:29 +0100)]
ARM64: DT: define ARM64 specific arch_match_cpu_phys_id

OF/DT core library provides architecture specific hook to match the
logical cpu index with the corresponding physical identifier.

On ARM64, the MPIDR_EL1 contains specific bitfields(MPIDR_EL1.Aff{3..0})
which uniquely identify a CPU, in addition to some non-identifying
information and reserved bits. The ARM cpu binding defines the 'reg'
property to only contain the affinity bits, and any cpu nodes with other
bits set in their 'reg' entry are skipped.

This patch overrides the weak definition of arch_match_cpu_phys_id
with ARM64 specific version using MPIDR_EL1.Aff{3..0} as cpu physical
identifiers.

Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit 6e15d0e04bfeaa5662a289ee915273307326e45a)

10 years agoMerge remote-tracking branch 'lsk/v3.10/topic/arm64-topology' into linux-linaro-lsk
Mark Brown [Fri, 13 Dec 2013 10:56:15 +0000 (10:56 +0000)]
Merge remote-tracking branch 'lsk/v3.10/topic/arm64-topology' into linux-linaro-lsk

10 years agoarm64: Add scheduler multicore and SMT Kconfig options
Mark Brown [Fri, 13 Dec 2013 10:52:45 +0000 (10:52 +0000)]
arm64: Add scheduler multicore and SMT Kconfig options

Enable additional use of additional scheduler features with the topology
information.

Reported-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
10 years agosched/debug: Add load-tracking statistics to task
Kamalesh Babulal [Tue, 25 Jun 2013 08:03:36 +0000 (13:33 +0530)]
sched/debug: Add load-tracking statistics to task

At present we print per-entity load-tracking statistics for
cfs_rq of cgroups/runqueues. Given that per task statistics
is maintained, it can be used to know the contribution made
by the task to its parenting cfs_rq level.

This patch adds per-task load-tracking statistics to /proc/<PID>/sched.

Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20130625080336.GA20175@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
10 years agosched: Fix sleep time double accounting in enqueue entity
Alex Shi [Thu, 20 Jun 2013 02:18:48 +0000 (10:18 +0800)]
sched: Fix sleep time double accounting in enqueue entity

The woken migrated task will __synchronize_entity_decay(se); in
migrate_task_rq_fair, then it needs to set
`se->avg.last_runnable_update -= (-se->avg.decay_count) << 20' before
update_entity_load_avg, in order to avoid sleep time is updated twice
for se.avg.load_avg_contrib in both __syncchronize and
update_entity_load_avg.

However if the sleeping task is woken up from the same cpu, it miss
the last_runnable_update before update_entity_load_avg(se, 0, 1), then
the sleep time was used twice in both functions.  So we need to remove
the double sleep time accounting.

Paul also contributed some code comments in this commit.

Signed-off-by: Alex Shi <alex.shi@intel.com>
Reviewed-by: Paul Turner <pjt@google.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1371694737-29336-5-git-send-email-alex.shi@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
10 years agoion: Improve ION config description
John Stultz [Fri, 8 Nov 2013 03:58:41 +0000 (19:58 -0800)]
ion: Improve ION config description

Mostly just to quiet checkpatch warnings, be more verbose
in describing the ION config option.

Change-Id: I194235f1a68623dca15ae6e658fc99d00943a827
Signed-off-by: John Stultz <john.stultz@linaro.org>
10 years agoion: Cleanup whitespace issues and other checkpatch problems
John Stultz [Fri, 8 Nov 2013 03:51:09 +0000 (19:51 -0800)]
ion: Cleanup whitespace issues and other checkpatch problems

Just some simple cleanups to address whitespace issues and
other issues found w/ checkpatch.

Change-Id: I181444505627894b8f3bbf59192703b0f65736ee
Signed-off-by: John Stultz <john.stultz@linaro.org>
10 years agoandroid: configs: Reorder config fragments, update README
JP Abgrall [Fri, 22 Nov 2013 22:07:03 +0000 (14:07 -0800)]
android: configs: Reorder config fragments, update README

Change-Id: I5ee4b794dcc00f74f26562e49a406ea292af63ee
(cherry picked from commit 9ebedefd06142c9bc812bfa23401031525002a76)

10 years agoion: fix bugs in cma heap
Colin Cross [Wed, 27 Nov 2013 23:53:21 +0000 (15:53 -0800)]
ion: fix bugs in cma heap

Implement ion_cma_unmap_kernel, ion will call it unconditionally.
Use correct gfp flags when calling dma_alloc_coherent so it doesn't
try to use atomic DMA memory.
Check for invalid alignment when allocating.
Reject cached allocations - the cpu address returned by
dma_alloc_coherent is always going to be an uncached mapping, so
map_kernel will not see data written by a cached userspace mapping.

Change-Id: I2ea03f28fae3749f6de0b89700b69da3845926ea
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: add alignment check to chunk heap
Colin Cross [Wed, 27 Nov 2013 23:53:01 +0000 (15:53 -0800)]
ion: add alignment check to chunk heap

Change-Id: I4be12b9545a81f9b46339a905f00e1e64896b3ed
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: add helper to zero contiguous region of pages
Colin Cross [Wed, 27 Nov 2013 23:51:02 +0000 (15:51 -0800)]
ion: add helper to zero contiguous region of pages

Add ion_heap_pages_zero for ion heaps to use to zero pages
during initialization or allocation, when a struct ion_buffer
may not be available.  Use it from the chunk heap and carveout
heaps.

Change-Id: Ic6c921943a8820cf9896da5164f2d9794d0fe91f
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: carveout heap: zero buffers on free, fix memory leak
Colin Cross [Wed, 27 Nov 2013 05:36:54 +0000 (21:36 -0800)]
ion: carveout heap: zero buffers on free, fix memory leak

The carveout heap wasn't zeroing its buffers after use.
Create the sg_table during allocate instead of map_dma, to allow
using the sg_table during free, and call ion_heap_buffer_zero
during free.  Also fixes a missing kfree when destroying the
table.

Change-Id: I318a8493cce32580250884cae336dd2e2c28e73b
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: fix sparse warnings
Colin Cross [Wed, 27 Nov 2013 05:25:47 +0000 (21:25 -0800)]
ion: fix sparse warnings

Fix sparse warnings in ion.

Change-Id: Icbadf2ca53bea20914f608f619568629c178eae3
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: use alloc_pages in system contig heap
Colin Cross [Tue, 26 Nov 2013 23:35:29 +0000 (15:35 -0800)]
ion: use alloc_pages in system contig heap

There is no reason to use kzalloc, just call alloc_pages directly.
Change the GFP from GFP_KERNEL to include __GFP_HIGH, to allow it
to return contiguous pages from highmem.  virt_to_* functions
aren't valid on highmem pages, so store the struct page * in an
sg_table in buffer->priv_virt like most other heaps, and replace
virt_to_* with page_to_*.

Change-Id: Ida78888b101f080883716e1fa5038dfc4dbabd16
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: allow cached mappings of chunk and system heap buffers
Colin Cross [Tue, 26 Nov 2013 23:33:33 +0000 (15:33 -0800)]
ion: allow cached mappings of chunk and system heap buffers

Now that ion_vm_fault uses vm_insert_pfn instead of vm_insert_page
cached buffers can be supported in any heap.  Remove the checks
in the chunk and system heaps.

Change-Id: I371a44c400ed8a342c3b0eed90d0fb7060537697
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: remove ion_heap_alloc_pages
Colin Cross [Tue, 26 Nov 2013 23:25:59 +0000 (15:25 -0800)]
ion: remove ion_heap_alloc_pages

Now that ion_vm_fault doesn't need a struct page with a nonzero
refcount, there is no need allocate heap memory for cached pages using
split_page.  Remove the ion_heap_alloc_pages and ion_heap_free_pages
helpers in favor of direct calls to alloc_pages and __free_pages,
and remove the special handling in the system heap.

Change-Id: I5966a798f48df2d56642e662a69c1495944f6509
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: use vm_insert_pfn for faulted pages
Colin Cross [Tue, 26 Nov 2013 23:05:46 +0000 (15:05 -0800)]
ion: use vm_insert_pfn for faulted pages

Most ion userspace mappings are created with remap_pfn_range.  Use
vm_insert_pfn instead of vm_insert_page to make faulted cached
mappings look more like uncached mappings.

Change-Id: I9ec5cad3fef54f3b80be8b306d7ff2f1fe3f0e66
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: check return value from remap_pfn_range
Colin Cross [Tue, 26 Nov 2013 23:34:50 +0000 (15:34 -0800)]
ion: check return value from remap_pfn_range

Check the return value of remap_pfn_range and return an error if
it fails.

Change-Id: I206cf95a24607ebe1c80274e3ed15cc7c076d007
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: free low memory from page pools first
Colin Cross [Fri, 22 Nov 2013 02:56:37 +0000 (18:56 -0800)]
ion: free low memory from page pools first

When the shrinkers are called with GFP_HIGH free low memory first,
it is more important to have free than high memory.

Change-Id: I7ad8a9c133830f04d429c3d87b781b3e862ccedb
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: optimize ion_heap_buffer_zero
Colin Cross [Mon, 25 Nov 2013 21:32:51 +0000 (13:32 -0800)]
ion: optimize ion_heap_buffer_zero

ion_heap_buffer_zero can spend a long time in unmap_kernel_range
if it has to broadcast a tlb flush to every cpu for every page.
Modify it to batch pages into a larger region to clear using a
single mapping.  This may cause the mapping size to change if
the buffer size is not a multiple of the mapping size, so
switch to allocating the address space for each chunk.  This
allows us to use vm_map_ram to handle the allocation and mapping
together.

The number of pages to zero using a single mapping is set to 32
to hit the fastpath in vm_map_ram.

Change-Id: I1accfe67b285cbc9e95e387bea4246864197827d
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: add alignment check to carveout heap
Colin Cross [Tue, 26 Nov 2013 21:43:29 +0000 (13:43 -0800)]
ion: add alignment check to carveout heap

Change-Id: I25c752b3eacb48cccea5be2df319634b3affd331
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: drop dependency on ARM
Colin Cross [Sat, 23 Nov 2013 06:48:42 +0000 (22:48 -0800)]
ion: drop dependency on ARM

Ion will compile and run on other platforms now, remove the
dependency on ARM.

Change-Id: I9da0ab686708bdab575a021031392b4402cce090
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: Fix two small issues in system_heap allocation
John Stultz [Fri, 22 Nov 2013 23:36:27 +0000 (15:36 -0800)]
ion: Fix two small issues in system_heap allocation

In testing ion system heap allocations, I ran across two issues:

1) Not k*z*allocing the sg table. This can cause trouble if
we end up trying call sg_alloc_table() with too many entries,
then sg_alloc_table() internally fails and tries to free what it
thinks is internal table structure, which causes bad pointer
traversals.

2) The second list_for_each_entry probably should be _safe,
since I was seeing  strange lock warnings and oopses on occasion.
This seems to resolve it, but could use some extra checking.

Change-Id: I59d4c90104a8cf23dc4ae814d0b17348f1b68ac0
Signed-off-by: John Stultz <john.stultz@linaro.org>
10 years agogpu: ion: fix use-after-free in ion_heap_freelist_drain
Mitchel Humpherys [Tue, 6 Aug 2013 18:19:42 +0000 (11:19 -0700)]
gpu: ion: fix use-after-free in ion_heap_freelist_drain

The `buffer' variable is being used after being freed. Fix this.

Change-Id: Iea3471fa7dc7535bbf0620c1639fea2008d7cf19
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
10 years agoion: clean up ioctls
Colin Cross [Sat, 9 Nov 2013 00:55:35 +0000 (16:55 -0800)]
ion: clean up ioctls

Convert the ion ioctls to use _IOW instead of _IOWR where
appropriate, and factor out the copy_from_user and copy_to_user
based on the _IOC_DIR bits.  For the existing incorrect ioctls,
add a function to wrap _IOC_DIR to return the corrected value.

Change-Id: I3cc34c84b9c52305bdbec27a9224447b102fadcd
Signed-off-by: Colin Cross <ccross@android.com>
10 years agogpu: ion: remove unnecessary function from system heap
Colin Cross [Thu, 7 Nov 2013 20:18:57 +0000 (12:18 -0800)]
gpu: ion: remove unnecessary function from system heap

ion_system_contig_heap buffers have an sglist, just call
ion_heap_map_user to map it.

Change-Id: I6dea383955834613fa8833659b31533c957c2b0b
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: fix printk warnings
Colin Cross [Thu, 19 Sep 2013 14:20:23 +0000 (09:20 -0500)]
ion: fix printk warnings

Use %z for size_t and %pa for dma_addr_t to avoid warnings in printks.

Change-Id: I2c72874acd0b69cb35fca691928783817deb9394
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: don't use phys_to_page or __phys_to_pfn
Colin Cross [Thu, 19 Sep 2013 15:13:53 +0000 (10:13 -0500)]
ion: don't use phys_to_page or __phys_to_pfn

phys_to_page and __phys_to_pfn don't exist on all platforms.
Use a combination of pfn_to_page, PFN_DOWN, page_to_pfn, and
virt_to_page to get the same results.

Change-Id: I53cef26059800bc8b7fb85ae458741574c97c257
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: don't use __arm_ioremap to map pages
Colin Cross [Thu, 19 Sep 2013 15:12:05 +0000 (10:12 -0500)]
ion: don't use __arm_ioremap to map pages

ion_heap_map_kernel already implements mapping a scatterlist of
pages into the kernel, and all heaps are required to have struct
pages associated with them, so delete the functions that use
__arm_ioremap and use ion_heap_map_kernel instead.

Change-Id: Ia2dfd8d8c6e719d7d2f68dd4c458826fdb938260
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: update idr to avoid deprecated apis
Colin Cross [Thu, 19 Sep 2013 19:54:56 +0000 (14:54 -0500)]
ion: update idr to avoid deprecated apis

Use idr_alloc instead if idr_pre_get/idr_get_new_above, and
remove idr_remove_all.

Change-Id: I675b789879549bd3767ed3ef2016cf108eb622d2
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoion: add test device for unit tests to interact with dma_bufs
Colin Cross [Sat, 9 Nov 2013 00:32:47 +0000 (16:32 -0800)]
ion: add test device for unit tests to interact with dma_bufs

Add a /dev/ion-test device that will be created if CONFIG_ION_TEST
is set.  The device accepts a dma_buf fd and allows reading and
writing to the backing memory using DMA-like apis or kernel mapping
apis.  Can be used to test the dma_buf mapping ops, including
the ion implementations, from userspace.

Change-Id: I30703ba69cd75bdfe7767ac642e5f0cacd8d0478
Signed-off-by: Colin Cross <ccross@android.com>
10 years agoMerge remote-tracking branch 'lsk/v3.10/topic/arm64-fvp' into linux-linaro-lsk
Mark Brown [Thu, 12 Dec 2013 17:16:17 +0000 (17:16 +0000)]
Merge remote-tracking branch 'lsk/v3.10/topic/arm64-fvp' into linux-linaro-lsk

10 years agovideo: amba-clcd: Make CLCD driver available on more platforms
Mark Brown [Thu, 12 Dec 2013 17:02:57 +0000 (17:02 +0000)]
video: amba-clcd: Make CLCD driver available on more platforms

The CLCD driver is used on ARM reference models for ARMv8 so add ARM64
to the list of dependencies. The driver also has no build time dependencies
on ARM (stubs are provided for ARM-specific DMA functions in the code) so
make it available with COMPILE_TEST in order to maximise build coverage.

Signed-off-by: Mark Brown <broonie@linaro.org>
10 years agoMerge branch 'linux-linaro-lsk' into linux-linaro-lsk-android
Mark Brown [Thu, 12 Dec 2013 10:22:32 +0000 (10:22 +0000)]
Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-android

10 years agoMerge tag 'v3.10.24' into linux-linaro-lsk
Mark Brown [Thu, 12 Dec 2013 10:22:21 +0000 (10:22 +0000)]
Merge tag 'v3.10.24' into linux-linaro-lsk

This is the 3.10.24 stable release

10 years agoLinux 3.10.24
Greg Kroah-Hartman [Thu, 12 Dec 2013 06:36:44 +0000 (22:36 -0800)]
Linux 3.10.24

10 years agocrypto: scatterwalk - Use sg_chain_ptr on chain entries
Tom Lendacky [Thu, 5 Dec 2013 19:09:53 +0000 (13:09 -0600)]
crypto: scatterwalk - Use sg_chain_ptr on chain entries

commit 389a5390583a18e45bc4abd4439291abec5e7a63 upstream.

Now that scatterwalk_sg_chain sets the chain pointer bit the sg_page
call in scatterwalk_sg_next hits a BUG_ON when CONFIG_DEBUG_SG is
enabled. Use sg_chain_ptr instead of sg_page on a chain entry.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoARM: mvebu: second PCIe unit of Armada XP mv78230 is only x1 capable
Arnaud Ebalard [Tue, 5 Nov 2013 20:45:48 +0000 (21:45 +0100)]
ARM: mvebu: second PCIe unit of Armada XP mv78230 is only x1 capable

commit 12b69a599745fc9e203f61fbb7160b2cc5f479dd upstream.

Various Marvell datasheets advertise second PCIe unit of mv78230
flavour of Armada XP as x4/quad x1 capable. This second unit is in
fact only x1 capable. This patch fixes current mv78230 .dtsi to
reflect that, i.e. makes 1.0 the second interface (instead of 2.0
at the moment). This was successfully tested on a mv78230-based
ReadyNAS 2120 platform with a x1 device (FL1009 XHCI controller)
connected to this second interface.

Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoARM: mvebu: fix second and third PCIe unit of Armada XP mv78260
Arnaud Ebalard [Tue, 5 Nov 2013 20:46:02 +0000 (21:46 +0100)]
ARM: mvebu: fix second and third PCIe unit of Armada XP mv78260

commit 2163e61c92d9337e721a0d067d88ae62b52e0d3e upstream.

mv78260 flavour of Marvell Armada XP SoC has 3 PCIe units. The
two first units are both x4 and quad x1 capable. The third unit
is only x4 capable. This patch fixes mv78260 .dtsi to reflect
those capabilities.

Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agodrivers/char/i8k.c: add Dell XPLS L421X
Alan Cox [Tue, 3 Dec 2013 21:56:56 +0000 (13:56 -0800)]
drivers/char/i8k.c: add Dell XPLS L421X

commit 9aa5b0181bdf335f0b731d8502e128a862884bcd upstream.

Addresses https://bugzilla.kernel.org/show_bug.cgi?id=60772

Signed-off-by: Alan Cox <alan@linux.intel.com>
Reported-by: Leho Kraav <leho@kraav.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoUSB: cdc-acm: Added support for the Lenovo RD02-D400 USB Modem
David Cluytens [Tue, 3 Dec 2013 13:18:57 +0000 (14:18 +0100)]
USB: cdc-acm: Added support for the Lenovo RD02-D400 USB Modem

commit 3b59d16c513da258ec8f6a0b4db85f257a0380d6 upstream.

Signed-off-by: David Cluytens <david.cluytens@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoUSB: spcp8x5: correct handling of CS5 setting
Colin Leitner [Fri, 8 Nov 2013 21:53:11 +0000 (22:53 +0100)]
USB: spcp8x5: correct handling of CS5 setting

commit 711fbdfbf2bc4827214a650afe3f64767a1aba16 upstream.

This patch removes an erroneous check of CSIZE, which made it impossible to set
CS5.

Compiles clean, but couldn't test against hardware.

Signed-off-by: Colin Leitner <colin.leitner@gmail.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoUSB: mos7840: correct handling of CS5 setting
Colin Leitner [Fri, 8 Nov 2013 21:52:34 +0000 (22:52 +0100)]
USB: mos7840: correct handling of CS5 setting

commit 78692cc3382e0603a47e1f2aaeffe0d99891994d upstream.

This patch removes an erroneous check of CSIZE, which made it impossible to set
CS5.

Compiles clean, but couldn't test against hardware.

Signed-off-by: Colin Leitner <colin.leitner@gmail.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoUSB: ftdi_sio: fixed handling of unsupported CSIZE setting
Colin Leitner [Tue, 5 Nov 2013 17:02:34 +0000 (18:02 +0100)]
USB: ftdi_sio: fixed handling of unsupported CSIZE setting

commit 8704211f65a2106ba01b6ac9727cdaf9ca11594c upstream.

FTDI UARTs support only 7 or 8 data bits. Until now the ftdi_sio driver would
only report this limitation for CS6 to dmesg and fail to reflect this fact to
tcgetattr.

This patch reverts the unsupported CSIZE setting and reports the fact with less
severance to dmesg for both CS5 and CS6.

To test the patch it's sufficient to call

    stty -F /dev/ttyUSB0 cs5

which will succeed without the patch and report an error with the patch
applied.

As an additional fix this patch ensures that the control request will always
include a data bit size.

Signed-off-by: Colin Leitner <colin.leitner@gmail.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoUSB: pl2303: fixed handling of CS5 setting
Colin Leitner [Mon, 4 Nov 2013 18:40:43 +0000 (19:40 +0100)]
USB: pl2303: fixed handling of CS5 setting

commit a313249937820f8b1996133fc285efbd6aad2c5b upstream.

This patch fixes the CS5 setting on the PL2303 USB-to-serial devices. CS5 has a
value of 0 and the CSIZE setting has been skipped altogether by the enclosing
if. Tested on 3.11.6 and the scope shows the correct output after the fix has
been applied.

Tagged to be added to stable, because it fixes a user visible driver bug and is
simple enough to backport easily.

Signed-off-by: Colin Leitner <colin.leitner@gmail.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agomei: add 9 series PCH mei device ids
Tomas Winkler [Thu, 5 Dec 2013 07:34:44 +0000 (09:34 +0200)]
mei: add 9 series PCH mei device ids

commit 76a9635979e543f04a5885198e68ff28e3311b67 upstream.

And Lynx Point H Refresh and Wildcat Point LP
device ids.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agomei: me: add Lynx Point Wellsburg work station device id
Tomas Winkler [Wed, 16 Oct 2013 09:09:43 +0000 (12:09 +0300)]
mei: me: add Lynx Point Wellsburg work station device id

commit 838b3a6d62413b336f3dde15ecff161070358957 upstream.

add missing device id for LPT based work station

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoInput: mousedev - allow disabling even without CONFIG_EXPERT
Tom Gundersen [Thu, 31 Oct 2013 07:44:49 +0000 (00:44 -0700)]
Input: mousedev - allow disabling even without CONFIG_EXPERT

commit dfaaed08ecc01bd513248ba7999daf50ce028352 upstream.

Moust (if not all) modern software, including X, uses /dev/eventX rather than
the legacy /dev/mouseX devices. It therefore makes sense for general-purpose
(distro) kernels to use MOUSEDV=m (or even n), so let's drop the EXPERT=y
requirement.

Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoInput: allow deselecting serio drivers even without CONFIG_EXPERT
Tom Gundersen [Thu, 31 Oct 2013 07:38:30 +0000 (00:38 -0700)]
Input: allow deselecting serio drivers even without CONFIG_EXPERT

commit bcd2623073e98f69f84720308db0b142c4da0bd6 upstream.

There is plenty of consumer hardware (e.g., mac books) that does not use AT
keyboards or PS/2 mice. It therefore makes sense for distro kernels to
build the related drivers as modules to avoid loading them on hardware that
does not need them. As such, these options should no longer be protected by
EXPERT.

Moreover, building these drivers as modules gets rid of the following ugly
error during boot:

[    2.337745] i8042: PNP: No PS/2 controller found. Probing ports directly.
[    3.439537] i8042: No controller found

Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agolib/genalloc.c: fix overflow of ending address of memory chunk
Joonyoung Shim [Wed, 11 Sep 2013 21:21:43 +0000 (14:21 -0700)]
lib/genalloc.c: fix overflow of ending address of memory chunk

commit 674470d97958a0ec72f72caf7f6451da40159cc7 upstream.

In struct gen_pool_chunk, end_addr means the end address of memory chunk
(inclusive), but in the implementation it is treated as address + size of
memory chunk (exclusive), so it points to the address plus one instead of
correct ending address.

The ending address of memory chunk plus one will cause overflow on the
memory chunk including the last address of memory map, e.g.  when starting
address is 0xFFF00000 and size is 0x100000 on 32bit machine, ending
address will be 0x100000000.

Use correct ending address like starting address + size - 1.

[akpm@linux-foundation.org: add comment to struct gen_pool_chunk:end_addr]
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoHID: usbhid: quirk for SiS Touchscreen
AceLan Kao [Wed, 2 Oct 2013 09:35:27 +0000 (17:35 +0800)]
HID: usbhid: quirk for SiS Touchscreen

commit 684524d35fe8d13be1f2649633e43bd02c96c695 upstream.

BugLink: http://bugs.launchpad.net/bugs/1180881
This device needs to be added to the quirks list with HID_QUIRK_NO_INIT_REPORTS,
otherwise it causes 10 seconds timeout during report initialization.

[12431.828467] hid-multitouch 0003:0457:1013.0475: usb_submit_urb(ctrl) failed: -1
[12431.828507] hid-multitouch 0003:0457:1013.0475: timeout initializing reports

Signed-off-by: AceLan Kao <acelan.kao@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoHID: usbhid: quirk for Synaptics Large Touchccreen
AceLan Kao [Wed, 2 Oct 2013 09:35:26 +0000 (17:35 +0800)]
HID: usbhid: quirk for Synaptics Large Touchccreen

commit 8171a67d587a09e14a4949a81e070345fedcf410 upstream.

BugLink: http://bugs.launchpad.net/bugs/1180881
Synaptics large touchscreen doesn't support some of the report request
while initializing. The unspoorted request will make the device unreachable,
and will lead to the following usb_submit_urb() function call timeout.
So, add the IDs into HID_QUIRK_NO_INIT_REPORTS quirk.

Signed-off-by: AceLan Kao <acelan.kao@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agotg3: avoid double-freeing of rx data memory
Ivan Vecera [Wed, 6 Nov 2013 13:02:36 +0000 (14:02 +0100)]
tg3: avoid double-freeing of rx data memory

commit 85aec73d595b8847f9c4ea571deb127913f0d508 upstream.

If build_skb fails the memory associated with the ring buffer is freed but
the ri->data member is not zeroed in this case. This causes a double-free
of this memory in tg3_free_rings->... path. The patch moves this block after
setting ri->data to NULL.
It would be nice to fix this bug also in stable >= v3.4 trees.

Cc: Nithin Nayak Sujir <nsujir@broadcom.com>
Cc: Michael Chan <mchan@broadcom.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoiwlwifi: dvm: don't override mac80211's queue setting
Emmanuel Grumbach [Tue, 15 Oct 2013 19:04:54 +0000 (22:04 +0300)]
iwlwifi: dvm: don't override mac80211's queue setting

commit f6b129527ca15bae29ffb9417ddaa1c9d99ffc5d upstream.

Since we set IEEE80211_HW_QUEUE_CONTROL, we can let
mac80211 do the queue assignement and don't need to
override its decisions.
While reassiging the same values is harmless of course,
it triggered  a WARNING when iwlwifi and mac80211 came
to different conclusions. This happened when mac80211 set
IEEE80211_TX_CTL_SEND_AFTER_DTIM, but didn't route the
packet to the cab_queue because no stations were asleep.

iwlwifi should not override mac80211's decicions for
offchannel packets and packets to  be sent after DTIM,
but it should override mac80211's decision for AMPDUs
since we have a special queue for them. So for AMPDU,
we still override info->hw_queue by the AMPDU queue.

This avoids:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 2531 at drivers/net/wireless/iwlwifi/dvm/tx.c:456 iwlagn_tx_skb+0x6c5/0x883()
Modules linked in:
CPU: 0 PID: 2531 Comm: hostapd Not tainted 3.12.0-rc5+ #1
Hardware name:                  /D53427RKE, BIOS RKPPT10H.86A.0017.2013.0425.1251 04/25/2013
 0000000000000000 0000000000000009 ffffffff8189aa62 0000000000000000
 ffffffff8105a4f2 ffff880058339a48 ffffffff815f8a04 0000000000000000
 ffff8800560097b0 0000000000000208 0000000000000000 ffff8800561a9e5e
Call Trace:
 [<ffffffff8189aa62>] ? dump_stack+0x41/0x51
 [<ffffffff8105a4f2>] ? warn_slowpath_common+0x78/0x90
 [<ffffffff815f8a04>] ? iwlagn_tx_skb+0x6c5/0x883
 [<ffffffff815f8a04>] ? iwlagn_tx_skb+0x6c5/0x883
 [<ffffffff818a0040>] ? put_cred+0x15/0x15
 [<ffffffff815f6db4>] ? iwlagn_mac_tx+0x19/0x2f
 [<ffffffff8186cc45>] ? __ieee80211_tx+0x226/0x29b
 [<ffffffff8186e6bd>] ? ieee80211_tx+0xa6/0xb5
 [<ffffffff8186e98b>] ? ieee80211_monitor_start_xmit+0x1e9/0x204
 [<ffffffff8171ce5f>] ? dev_hard_start_xmit+0x271/0x3ec
 [<ffffffff817351ac>] ? sch_direct_xmit+0x66/0x164
 [<ffffffff8171d1bf>] ? dev_queue_xmit+0x1e5/0x3c8
 [<ffffffff817fac5a>] ? packet_sendmsg+0xac5/0xb3d
 [<ffffffff81709a09>] ? sock_sendmsg+0x37/0x52
 [<ffffffff810f9e0c>] ? __do_fault+0x338/0x36b
 [<ffffffff81713820>] ? verify_iovec+0x44/0x94
 [<ffffffff81709e63>] ? ___sys_sendmsg+0x1f1/0x283
 [<ffffffff81140a73>] ? __inode_wait_for_writeback+0x67/0xae
 [<ffffffff8111735e>] ? __cache_free.isra.46+0x178/0x187
 [<ffffffff811173b1>] ? kmem_cache_free+0x44/0x84
 [<ffffffff81132c22>] ? dentry_kill+0x13d/0x149
 [<ffffffff81132f6f>] ? dput+0xe5/0xef
 [<ffffffff81136e04>] ? fget_light+0x2e/0x7c
 [<ffffffff8170ae62>] ? __sys_sendmsg+0x39/0x57
 [<ffffffff818a7e39>] ? system_call_fastpath+0x16/0x1b
---[ end trace 1b3eb79359c1d1e6 ]---

Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoSCSI: Disable WRITE SAME for RAID and virtual host adapter drivers
Martin K. Petersen [Wed, 23 Oct 2013 10:25:40 +0000 (06:25 -0400)]
SCSI: Disable WRITE SAME for RAID and virtual host adapter drivers

commit 54b2b50c20a61b51199bedb6e5d2f8ec2568fb43 upstream.

Some host adapters do not pass commands through to the target disk
directly. Instead they provide an emulated target which may or may not
accurately report its capabilities. In some cases the physical device
characteristics are reported even when the host adapter is processing
commands on the device's behalf. This can lead to adapter firmware hangs
or excessive I/O errors.

This patch disables WRITE SAME for devices connected to host adapters
that provide an emulated target. Driver writers can disable WRITE SAME
by setting the no_write_same flag in the host adapter template.

[jejb: fix up rejections due to eh_deadline patch]
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agox86-64, build: Always pass in -mno-sse
H. Peter Anvin [Wed, 20 Nov 2013 21:31:49 +0000 (13:31 -0800)]
x86-64, build: Always pass in -mno-sse

commit 5551a34e5aeab868f8d37f70d8754868921b4ee5 upstream.

Always pass in the -mno-sse argument, regardless if
-preferred-stack-boundary is supported.  We never want to generate SSE
instructions in the kernel unless we *really* know what we're doing.

According to H. J. Lu, any version of gcc new enough that we support
it at all should handle the -mno-sse option, so just add it
unconditionally.

Reported-by: Kevin B. Smith <kevin.b.smith@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: H. J. Lu <hjl.tools@gmail.com>
Link: http://lkml.kernel.org/n/tip-j21wzqv790q834n7yc6g80j1@git.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agonet: update consumers of MSG_MORE to recognize MSG_SENDPAGE_NOTLAST
Shawn Landden [Mon, 25 Nov 2013 06:36:28 +0000 (22:36 -0800)]
net: update consumers of MSG_MORE to recognize MSG_SENDPAGE_NOTLAST

commit d3f7d56a7a4671d395e8af87071068a195257bf6 upstream.

Commit 35f9c09fe (tcp: tcp_sendpages() should call tcp_push() once)
added an internal flag MSG_SENDPAGE_NOTLAST, similar to
MSG_MORE.

algif_hash, algif_skcipher, and udp used MSG_MORE from tcp_sendpages()
and need to see the new flag as identical to MSG_MORE.

This fixes sendfile() on AF_ALG.

v3: also fix udp

Cc: Tom Herbert <therbert@google.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Reported-and-tested-by: Shawn Landden <shawnlandden@gmail.com>
Original-patch: Richard Weinberger <richard@nod.at>
Signed-off-by: Shawn Landden <shawn@churchofgit.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoirq: Enable all irqs unconditionally in irq_resume
Laxman Dewangan [Mon, 25 Nov 2013 14:09:47 +0000 (19:39 +0530)]
irq: Enable all irqs unconditionally in irq_resume

commit ac01810c9d2814238f08a227062e66a35a0e1ea2 upstream.

When the system enters suspend, it disables all interrupts in
suspend_device_irqs(), including the interrupts marked EARLY_RESUME.

On the resume side things are different. The EARLY_RESUME interrupts
are reenabled in sys_core_ops->resume and the non EARLY_RESUME
interrupts are reenabled in the normal system resume path.

When suspend_noirq() failed or suspend is aborted for any other
reason, we might omit the resume side call to sys_core_ops->resume()
and therefor the interrupts marked EARLY_RESUME are not reenabled and
stay disabled forever.

To solve this, enable all irqs unconditionally in irq_resume()
regardless whether interrupts marked EARLY_RESUMEhave been already
enabled or not.

This might try to reenable already enabled interrupts in the non
failure case, but the only affected platform is XEN and it has been
confirmed that it does not cause any side effects.

[ tglx: Massaged changelog. ]

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by-and-tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
Cc: <ian.campbell@citrix.com>
Cc: <rjw@rjwysocki.net>
Cc: <len.brown@intel.com>
Cc: <gregkh@linuxfoundation.org>
Link: http://lkml.kernel.org/r/1385388587-16442-1-git-send-email-ldewangan@nvidia.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoUpdate of blkg_stat and blkg_rwstat may happen in bh context. While u64_stats_fetch_r...
Hong Zhiguo [Wed, 20 Nov 2013 17:35:05 +0000 (10:35 -0700)]
Update of blkg_stat and blkg_rwstat may happen in bh context. While u64_stats_fetch_retry is only preempt_disable on 32bit UP system. This is not enough to avoid preemption by bh and may read strange 64 bit value.

commit 2c575026fae6e63771bd2a4c1d407214a8096a89 upstream.

Signed-off-by: Hong Zhiguo <zhiguohong@tencent.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoxen/gnttab: leave lazy MMU mode in the case of a m2p override failure
Matt Wilson [Wed, 20 Nov 2013 20:11:35 +0000 (12:11 -0800)]
xen/gnttab: leave lazy MMU mode in the case of a m2p override failure

commit 14883a75ec76b44759385fb12629f4a0f1aef4e3 upstream.

Commit f62805f1 introduced a bug where lazy MMU mode isn't exited if a
m2p_add/remove_override call fails.

Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Anthony Liguori <aliguori@amazon.com>
Signed-off-by: Matt Wilson <msw@amazon.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoparisc: fix mmap(MAP_FIXED|MAP_SHARED) to already mmapped address
Helge Deller [Wed, 20 Nov 2013 22:07:42 +0000 (23:07 +0100)]
parisc: fix mmap(MAP_FIXED|MAP_SHARED) to already mmapped address

commit 0576da2c08e3d332f1b0653030d28ab804585ab6 upstream.

locale-gen on Debian showed a strange problem on parisc:
mmap2(NULL, 536870912, PROT_NONE, MAP_SHARED, 3, 0) = 0x42a54000
mmap2(0x42a54000, 103860, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_FIXED, 3, 0) = -1 EINVAL (Invalid argument)

Basically it was just trying to re-mmap() a file at the same address
which it was given by a previous mmap() call. But this remapping failed
with EINVAL.

The problem is, that when MAP_FIXED and MAP_SHARED flags were used, we didn't
included the mapping-based offset when we verified the alignment of the given
fixed address against the offset which we calculated it in the previous call.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agopowerpc/gpio: Fix the wrong GPIO input data on MPC8572/MPC8536
Liu Gang [Fri, 22 Nov 2013 08:12:40 +0000 (16:12 +0800)]
powerpc/gpio: Fix the wrong GPIO input data on MPC8572/MPC8536

commit 1aeef303b5d9e243c41d5b80f8bb059366514a10 upstream.

For MPC8572/MPC8536, the status of GPIOs defined as output
cannot be determined by reading GPDAT register, so the code
use shadow data register instead. But the code may give the
wrong status of GPIOs defined as input under some scenarios:

1. If some pins were configured as inputs and were asserted
high before booting the kernel, the shadow data has been
initialized with those pin values.
2. Some pins have been configured as output first and have
been set to the high value, then reconfigured as input.

The above cases will make the shadow data for those input
pins to be set to high. Then reading the pin status will
always return high even if the actual pin status is low.

The code should eliminate the effects of the shadow data to
the input pins, and the status of those pins should be
read directly from GPDAT.

Acked-by: Scott Wood <scottwood@freescale.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Liu Gang <Gang.Liu@freescale.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agotime: Fix 1ns/tick drift w/ GENERIC_TIME_VSYSCALL_OLD
Martin Schwidefsky [Fri, 22 Nov 2013 19:44:51 +0000 (11:44 -0800)]
time: Fix 1ns/tick drift w/ GENERIC_TIME_VSYSCALL_OLD

commit 4be77398ac9d948773116b6be4a3c91b3d6ea18c upstream.

Since commit 1e75fa8be9f (time: Condense timekeeper.xtime
into xtime_sec - merged in v3.6), there has been an problem
with the error accounting in the timekeeping code, such that
when truncating to nanoseconds, we round up to the next nsec,
but the balancing adjustment to the ntp_error value was dropped.

This causes 1ns per tick drift forward of the clock.

In 3.7, this logic was isolated to only GENERIC_TIME_VSYSCALL_OLD
architectures (s390, ia64, powerpc).

The fix is simply to balance the accounting and to subtract the
added nanosecond from ntp_error. This allows the internal long-term
clock steering to keep the clock accurate.

While this fix removes the regression added in 1e75fa8be9f, the
ideal solution is to move away from GENERIC_TIME_VSYSCALL_OLD
and use the new VSYSCALL method, which avoids entirely the
nanosecond granular rounding, and the resulting short-term clock
adjustment oscillation needed to keep long term accurate time.

[ jstultz: Many thanks to Martin for his efforts identifying this
      subtle bug, and providing the fix. ]

Originally-from: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Paul Turner <pjt@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1385149491-20307-1-git-send-email-john.stultz@linaro.org
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoNFSv4: Update list of irrecoverable errors on DELEGRETURN
Trond Myklebust [Tue, 19 Nov 2013 21:34:14 +0000 (16:34 -0500)]
NFSv4: Update list of irrecoverable errors on DELEGRETURN

commit c97cf606e43b85a6cf158b810375dd77312024db upstream.

If the DELEGRETURN errors out with something like NFS4ERR_BAD_STATEID
then there is no recovery possible. Just quit without returning an error.

Also, note that the client must not assume that the NFSv4 lease has been
renewed when it sees an error on DELEGRETURN.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agonet: smc91: fix crash regression on the versatile
Linus Walleij [Thu, 28 Nov 2013 13:33:52 +0000 (14:33 +0100)]
net: smc91: fix crash regression on the versatile

commit a0c20fb02592d372e744d1d739cda3e1b3defaae upstream.

After commit e9e4ea74f06635f2ffc1dffe5ef40c854faa0a90
"net: smc91x: dont't use SMC_outw for fixing up halfword-aligned data"
The Versatile SMSC LAN91C111 is crashing like this:

------------[ cut here ]------------
kernel BUG at /home/linus/linux/drivers/net/ethernet/smsc/smc91x.c:599!
Internal error: Oops - BUG: 0 [#1] ARM
Modules linked in:
CPU: 0 PID: 43 Comm: udhcpc Not tainted 3.13.0-rc1+ #24
task: c6ccfaa0 ti: c6cd0000 task.ti: c6cd0000
PC is at smc_hardware_send_pkt+0x198/0x22c
LR is at smc_hardware_send_pkt+0x24/0x22c
pc : [<c01be324>]    lr : [<c01be1b0>]    psr: 20000013
sp : c6cd1d08  ip : 00000001  fp : 00000000
r10: c02adb08  r9 : 00000000  r8 : c6ced802
r7 : c786fba0  r6 : 00000146  r5 : c8800000  r4 : c78d6000
r3 : 0000000f  r2 : 00000146  r1 : 00000000  r0 : 00000031
Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 0005317f  Table: 06cf4000  DAC: 00000015
Process udhcpc (pid: 43, stack limit = 0xc6cd01c0)
Stack: (0xc6cd1d08 to 0xc6cd2000)
1d00:                   00000010 c8800000 c78d6000 c786fba0 c78d6000 c01be868
1d20: c01be7a4 00004000 00000000 c786fba0 c6c12b80 c0208554 000004d0 c780fc60
1d40: 00000220 c01fb734 00000000 00000000 00000000 c6c9a440 c6c12b80 c78d6000
1d60: c786fba0 c6c9a440 00000000 c021d1d8 00000000 00000000 c6c12b80 c78d6000
1d80: c786fba0 00000001 c6c9a440 c02087f8 c6c9a4a0 00080008 00000000 00000000
1da0: c78d6000 c786fba0 c78d6000 00000138 00000000 00000000 00000000 00000000
1dc0: 00000000 c027ba74 00000138 00000138 00000001 00000010 c6cedc00 00000000
1de0: 00000008 c7404400 c6cd1eec c6cd1f14 c067a73c c065c0b8 00000000 c067a740
1e00: 01ffffff 002040d0 00000000 00000000 00000000 00000000 00000000 ffffffff
1e20: 43004400 00110022 c6cdef20 c027ae8c c6ccfaa0 be82d65c 00000014 be82d3cc
1e40: 00000000 00000000 00000000 c01f2870 00000000 00000000 00000000 c6cd1e88
1e60: c6ccfaa0 00000000 00000000 00000000 00000000 00000000 00000000 00000000
1e80: 00000000 00000000 00000031 c7802310 c7802300 00000138 c7404400 c0771da0
1ea0: 00000000 c6cd1eec c7800340 00000138 be82d65c 00000014 be82d3cc c6cd1f08
1ec0: 00000014 00000000 c7404400 c7404400 00000138 c01f4628 c78d6000 00000000
1ee0: 00000000 be82d3cc 00000138 c6cd1f08 00000014 c6cd1ee4 00000001 00000000
1f00: 00000000 00000000 00080011 00000002 06000000 ffffffff 0000ffff 00000002
1f20: 06000000 ffffffff 0000ffff c00928c8 c065c520 c6cd1f58 00000003 c009299c
1f40: 00000003 c065c520 c7404400 00000000 c7404400 c01f2218 c78106b0 c7441cb0
1f60: 00000000 00000006 c06799fc 00000000 00000000 00000006 00000000 c01f3ee0
1f80: 00000000 00000000 be82d678 be82d65c 00000014 00000001 00000122 c00139c8
1fa0: c6cd0000 c0013840 be82d65c 00000014 00000006 be82d3cc 00000138 00000000
1fc0: be82d65c 00000014 00000001 00000122 00000000 00000000 00018cb1 00000000
1fe0: 00003801 be82d3a8 0003a0c7 b6e9af08 60000010 00000006 00000000 00000000
[<c01be324>] (smc_hardware_send_pkt+0x198/0x22c) from [<c01be868>] (smc_hard_start_xmit+0xc4/0x1e8)
[<c01be868>] (smc_hard_start_xmit+0xc4/0x1e8) from [<c0208554>] (dev_hard_start_xmit+0x460/0x4cc)
[<c0208554>] (dev_hard_start_xmit+0x460/0x4cc) from [<c021d1d8>] (sch_direct_xmit+0x94/0x18c)
[<c021d1d8>] (sch_direct_xmit+0x94/0x18c) from [<c02087f8>] (dev_queue_xmit+0x238/0x42c)
[<c02087f8>] (dev_queue_xmit+0x238/0x42c) from [<c027ba74>] (packet_sendmsg+0xbe8/0xd28)
[<c027ba74>] (packet_sendmsg+0xbe8/0xd28) from [<c01f2870>] (sock_sendmsg+0x84/0xa8)
[<c01f2870>] (sock_sendmsg+0x84/0xa8) from [<c01f4628>] (SyS_sendto+0xb8/0xdc)
[<c01f4628>] (SyS_sendto+0xb8/0xdc) from [<c0013840>] (ret_fast_syscall+0x0/0x2c)
Code: e3130002 1a000001 e3130001 0affffcd (e7f001f2)
---[ end trace 81104fe70e8da7fe ]---
Kernel panic - not syncing: Fatal exception in interrupt

This is because the macro operations in smc91x.h defined
for Versatile are missing SMC_outsw() as used in this
commit.

The Versatile needs and uses the same accessors as the other
platforms in the first if(...) clause, just switch it to using
that and we have one problem less to worry about.

This includes a hunk of a patch from Will Deacon fixin
the other 32bit platforms as well: Innokom, Ramses, PXA,
PCM027.

Checkpatch complains about spacing, but I have opted to
follow the style of this .h-file.

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoSCSI: hpsa: return 0 from driver probe function on success, not 1
Stephen M. Cameron [Fri, 1 Nov 2013 16:02:25 +0000 (11:02 -0500)]
SCSI: hpsa: return 0 from driver probe function on success, not 1

commit 88bf6d62db4393fa03a58bada9d746312d5b496f upstream.

A return value of 1 is interpreted as an error.  See pci_driver.
in local_pci_probe().  If you're wondering how this ever could
have worked, it's because it used to be the case that only return
values less than zero were interpreted as failure.  But even in
the current kernel if the driver registers its various entry
points with the kernel, and then returns a value which is
interpreted as failure, those registrations aren't undone, so
the driver still mostly works.  However, the driver's remove
function wouldn't be called on rmmod, and pci power management
functions wouldn't work.  In the case of Smart Array, since it
has a battery backed cache (or else no cache) even if the driver
is not shut down properly as long as there is no outstanding
i/o, nothing too bad happens, which is why it took so long to
notice.

Requesting backport to stable because the change to pci-driver.c
which requires driver probe functions to return 0 occurred between
2.6.35 and 2.6.36 (the pci power management breakage) and again
between 3.7 and 3.8 (pci_dev->driver getting set to NULL in
local_pci_probe() preventing driver remove function from being
called on rmmod.)

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoSCSI: hpsa: do not discard scsi status on aborted commands
Stephen M. Cameron [Mon, 23 Sep 2013 18:33:41 +0000 (13:33 -0500)]
SCSI: hpsa: do not discard scsi status on aborted commands

commit 2e311fbabdc23b7eaec77313dc3b9a151a5407b5 upstream.

We inadvertantly discarded the scsi status for aborted commands.
For some commands (e.g. reads from tape drives) these can't be retried,
and if we discarded the scsi status, the scsi mid layer couldn't notice
anything was wrong and the error was not reported.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoSCSI: libsas: fix usage of ata_tf_to_fis
Dan Williams [Wed, 23 Oct 2013 01:35:19 +0000 (18:35 -0700)]
SCSI: libsas: fix usage of ata_tf_to_fis

commit ae5fbae0ccd982dfca0ce363036ed92f5b13f150 upstream.

Since commit 110dd8f19df5 "[SCSI] libsas: fix scr_read/write users and
update the libata documentation" we have been passing pmp=1 and is_cmd=0
to ata_tf_to_fis().  Praveen reports that eSATA attached drives do not
discover correctly.  His investigation found that the BIOS was passing
pmp=0 while Linux was passing pmp=1 and failing to discover the drives.
Update libsas to follow the libata example of pulling the pmp setting
from the ata_link and correct is_cmd to be 1 since all tf's submitted
through ->qc_issue are commands.  Presumably libsas lldds do not care
about is_cmd as they have sideband mechanisms to perform link
management.

http://marc.info/?l=linux-scsi&m=138179681726990

[jejb: checkpatch fix]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reported-by: Praveen Murali <pmurali@logicube.com>
Tested-by: Praveen Murali <pmurali@logicube.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoSCSI: enclosure: fix WARN_ON in dual path device removing
James Bottomley [Fri, 15 Nov 2013 22:58:00 +0000 (14:58 -0800)]
SCSI: enclosure: fix WARN_ON in dual path device removing

commit a1470c7bf3a4676e62e4c0fb204e339399eb5c59 upstream.

Bug report from: wenxiong@linux.vnet.ibm.com

The issue is happened in dual controller configuration. We got the
sysfs warnings when rmmod the ipr module.

enclosure_unregister() in drivers/msic/enclosure.c, call device_unregister()
for each componment deivce, device_unregister() ->device_del()->kobject_del()
->sysfs_remove_dir(). In sysfs_remove_dir(), set kobj->sd = NULL.

For each componment device,
enclosure_component_release()->enclosure_remove_links()->sysfs_remove_link()
in which checking kobj->sd again, it has been set as NULL when doing
device_unregister. So we saw all these sysfs WARNING.

Tested-by: wenxiong@linux.vnet.ibm.com
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoSCSI: bfa: Fix crash when symb name set for offline vport
Vijaya Mohan Guvva [Thu, 21 Nov 2013 09:37:49 +0000 (01:37 -0800)]
SCSI: bfa: Fix crash when symb name set for offline vport

commit 22a08538dca5c0630226f1c0c58dccd12e463d22 upstream.

This patch fixes a crash when tried setting symbolic name for an offline
vport through sysfs. Crash is due to uninitialized pointer lport->ns,
which gets initialized only on linkup (port online).

Signed-off-by: Vijaya Mohan Guvva <vmohan@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agocan: c_can: don't call pm_runtime_get_sync() from interrupt context
Marc Kleine-Budde [Sun, 24 Nov 2013 22:31:24 +0000 (23:31 +0100)]
can: c_can: don't call pm_runtime_get_sync() from interrupt context

commit e35d46adc49b469fd92bdb64fea8af93640e6651 upstream.

The c_can driver contians a callpath (c_can_poll -> c_can_state_change ->
c_can_get_berr_counter) which may call pm_runtime_get_sync() from the IRQ
handler, which is not allowed and results in "BUG: scheduling while atomic".

This problem is fixed by introducing __c_can_get_berr_counter, which will not
call pm_runtime_get_sync().

Reported-by: Andrew Glen <AGlen@bepmarine.com>
Tested-by: Andrew Glen <AGlen@bepmarine.com>
Signed-off-by: Andrew Glen <AGlen@bepmarine.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agocan: sja1000: fix {pre,post}_irq() handling and IRQ handler return value
Oliver Hartkopp [Thu, 21 Nov 2013 17:03:07 +0000 (18:03 +0100)]
can: sja1000: fix {pre,post}_irq() handling and IRQ handler return value

commit 2fea6cd303c0d0cd9067da31d873b6a6d5bd75e7 upstream.

This patch fixes the issue that the sja1000_interrupt() function may have
returned IRQ_NONE without processing the optional pre_irq() and post_irq()
function before. Further the irq processing counter 'n' is moved to the end of
the while statement to return correct IRQ_[NONE|HANDLED] values at error
conditions.

Reported-by: Wolfgang Grandegger <wg@grandegger.com>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agovfs: fix subtle use-after-free of pipe_inode_info
Linus Torvalds [Mon, 2 Dec 2013 17:44:51 +0000 (09:44 -0800)]
vfs: fix subtle use-after-free of pipe_inode_info

commit b0d8d2292160bb63de1972361ebed100c64b5b37 upstream.

The pipe code was trying (and failing) to be very careful about freeing
the pipe info only after the last access, with a pattern like:

        spin_lock(&inode->i_lock);
        if (!--pipe->files) {
                inode->i_pipe = NULL;
                kill = 1;
        }
        spin_unlock(&inode->i_lock);
        __pipe_unlock(pipe);
        if (kill)
                free_pipe_info(pipe);

where the final freeing is done last.

HOWEVER.  The above is actually broken, because while the freeing is
done at the end, if we have two racing processes releasing the pipe
inode info, the one that *doesn't* free it will decrement the ->files
count, and unlock the inode i_lock, but then still use the
"pipe_inode_info" afterwards when it does the "__pipe_unlock(pipe)".

This is *very* hard to trigger in practice, since the race window is
very small, and adding debug options seems to just hide it by slowing
things down.

Simon originally reported this way back in July as an Oops in
kmem_cache_allocate due to a single bit corruption (due to the final
"spin_unlock(pipe->mutex.wait_lock)" incrementing a field in a different
allocation that had re-used the free'd pipe-info), it's taken this long
to figure out.

Since the 'pipe->files' accesses aren't even protected by the pipe lock
(we very much use the inode lock for that), the simple solution is to
just drop the pipe lock early.  And since there were two users of this
pattern, create a helper function for it.

Introduced commit ba5bb147330a ("pipe: take allocation and freeing of
pipe_inode_info out of ->i_mutex").

Reported-by: Simon Kirby <sim@hostway.ca>
Reported-by: Ian Applegate <ia@cloudflare.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoASoC: wm8731: fix dsp mode configuration
Bo Shen [Tue, 3 Dec 2013 10:04:54 +0000 (18:04 +0800)]
ASoC: wm8731: fix dsp mode configuration

commit b4af6ef99a60c5b56df137d7accd81ba1ee1254e upstream.

According to WM8731 "PD, Rev 4.9 October 2012" datasheet, when it
works in DSP mode A, LRP = 1, while works in DSP mode B, LRP = 0.
So, fix LRP for DSP mode as the datesheet specification.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoASoC: wm8990: Mark the register map as dirty when powering down
Mark Brown [Fri, 22 Nov 2013 14:17:18 +0000 (14:17 +0000)]
ASoC: wm8990: Mark the register map as dirty when powering down

commit 2ab2b74277a86afe0dd92976db695a2bb8b93366 upstream.

Otherwise we'll skip sync on resume.

Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoARM: mvebu: use the virtual CPU registers to access coherency registers
Gregory CLEMENT [Mon, 25 Nov 2013 16:26:46 +0000 (17:26 +0100)]
ARM: mvebu: use the virtual CPU registers to access coherency registers

commit b6dda00cddcc71d2030668bc0cc0fed758c411c2 upstream.

The Armada XP provides a mechanism called "virtual CPU registers" or
"per-CPU register banking", to access the per-CPU registers of the
current CPU, without having to worry about finding on which CPU we're
running. CPU0 has its registers at 0x21800, CPU1 at 0x21900, CPU2 at
0x21A00 and CPU3 at 0x21B00. The virtual registers accessing the
current CPU registers are at 0x21000.

However, in the Device Tree node that provides the register addresses
for the coherency unit (which is responsible for ensuring coherency
between processors, and I/O coherency between processors and the
DMA-capable devices), a mistake was made: the CPU0-specific registers
were specified instead of the virtual CPU registers. This means that
the coherency barrier needed for I/O coherency was not behaving
properly when executed from a CPU different from CPU0. This patch
fixes that by using the virtual CPU registers.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Fixes: e60304f8cb7bb5 "arm: mvebu: Add hardware I/O Coherency support"
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoARM: at91: sama5d3: reduce TWI internal clock frequency
Ludovic Desroches [Fri, 22 Nov 2013 16:08:43 +0000 (17:08 +0100)]
ARM: at91: sama5d3: reduce TWI internal clock frequency

commit 58e7b1d5826ac6a64b1101d8a70162bc084a7d1e upstream.

With some devices, transfer hangs during I2C frame transmission. This issue
disappears when reducing the internal frequency of the TWI IP. Even if it is
indicated that internal clock max frequency is 66MHz, it seems we have
oversampling on I2C signals making TWI believe that a transfer in progress
is done.

This fix has no impact on the I2C bus frequency.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoARM: footbridge: fix EBSA285 LEDs
Russell King [Fri, 29 Nov 2013 00:54:38 +0000 (00:54 +0000)]
ARM: footbridge: fix EBSA285 LEDs

commit 67130c5464f50428aea0b4526a6729d61f9a1d53 upstream.

- The LEDs register is write-only: it can't be read-modify-written.
- The LEDs are write-1-for-off not 0.
- The check for the platform was inverted.

Fixes: cf6856d693dd ("ARM: mach-footbridge: retire custom LED code")
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoARM: footbridge: fix VGA initialisation
Russell King [Thu, 28 Nov 2013 21:55:41 +0000 (21:55 +0000)]
ARM: footbridge: fix VGA initialisation

commit 43659222e7a0113912ed02f6b2231550b3e471ac upstream.

It's no good setting vga_base after the VGA console has been
initialised, because if we do that we get this:

Unable to handle kernel paging request at virtual address 000b8000
pgd = c0004000
[000b8000] *pgd=07ffc831, *pte=00000000, *ppte=00000000
0Internal error: Oops: 5017 [#1] ARM
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.0+ #49
task: c03e2974 ti: c03d8000 task.ti: c03d8000
PC is at vgacon_startup+0x258/0x39c
LR is at request_resource+0x10/0x1c
pc : [<c01725d0>]    lr : [<c0022b50>]    psr: 60000053
sp : c03d9f68  ip : 000b8000  fp : c03d9f8c
r10: 000055aa  r9 : 4401a103  r8 : ffffaa55
r7 : c03e357c  r6 : c051b460  r5 : 000000ff  r4 : 000c0000
r3 : 000b8000  r2 : c03e0514  r1 : 00000000  r0 : c0304971
Flags: nZCv  IRQs on  FIQs off  Mode SVC_32  ISA ARM  Segment kernel

which is an access to the 0xb8000 without the PCI offset required to
make it work.

Fixes: cc22b4c18540 ("ARM: set vga memory base at run-time")
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoARM: fix booting low-vectors machines
Russell King [Thu, 28 Nov 2013 21:43:40 +0000 (21:43 +0000)]
ARM: fix booting low-vectors machines

commit d8aa712c30148ba26fd89a5dc14de95d4c375184 upstream.

Commit f6f91b0d9fd9 (ARM: allow kuser helpers to be removed from the
vector page) required two pages for the vectors code.  Although the
code setting up the initial page tables was updated, the code which
allocates page tables for new processes wasn't, neither was the code
which tears down the mappings.  Fix this.

Fixes: f6f91b0d9fd9 ("ARM: allow kuser helpers to be removed from the vector page")
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>