fastcharge: Cleanup and fixes

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
rtc: alarm: Proper handling of spinlock

In alarm_shutdown hook, taking interruptible mutex
lock in interrupt disabled context. This patch fixes
alarm_shutdown function to call rtc_read_time and
rtc_set_alarm APIs in interrupt enabled context.

Change-Id: I9392d8908c19365993dccc22504f4b6f83ae8f72
CRs-Fixed: 619657
Signed-off-by: Mohit Aggarwal <maggarwa@codeaurora.org>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
staging: android: ashmem: Avoid deadlock with mmap/shrink

Both ashmem_mmap and ashmem_shrink take the ashmem_lock. It may
be possible for ashmem_mmap to invoke ashmem_shrink:

-000|mutex_lock(lock = 0x0)
-001|ashmem_shrink(?, sc = 0x0) <--- try to take ashmem_mutex again
-002|shrink_slab(shrink = 0xDA5F1CC0, nr_pages_scanned = 0, lru_pages
-002|=
-002|124)
-003|try_to_free_pages(zonelist = 0x0, ?, ?, ?)
-004|__alloc_pages_nodemask(gfp_mask = 21200, order = 1, zonelist =
-004|0xC11D0940,
-005|new_slab(s = 0xE4841E80, ?, node = -1)
-006|__slab_alloc.isra.43.constprop.50(s = 0xE4841E80, gfpflags =
-006|2148925462, ad
-007|kmem_cache_alloc(s = 0xE4841E80, gfpflags = 208)
-008|shmem_alloc_inode(?)
-009|alloc_inode(sb = 0xE480E800)
-010|new_inode_pseudo(?)
-011|new_inode(?)
-012|shmem_get_inode(sb = 0xE480E800, dir = 0x0, ?, dev = 0, flags =
-012|187)
-013|shmem_file_setup(?, ?, flags = 187)
-014|ashmem_mmap(?, vma = 0xC5D64210) <---- Acquire ashmem_mutex
-015|mmap_region(file = 0xDF8E2C00, addr = 1772974080, len = 233472,
-015|flags = 57,
-016|sys_mmap_pgoff(addr = 0, len = 230400, prot = 3, flags = 1, fd =
-016|157, pgoff
-017|ret_fast_syscall(asm)
-->|exception
-018|NUR:0x40097508(asm)
---|end of frame

Avoid this deadlock by using mutex_trylock in ashmem_shrink; if the mutex
is already held, do not attempt to shrink.

Change-Id: I222bbf55856d5849da813b730de0636c80966c8e
CRs-Fixed: 608832
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
msm: kgsl: Treat 0x0 as valid GPU pagetable physical address

Iommu driver could be allocating a valid GPU pagetable at
physical address 0x0, remove assumption from GPU kernel driver
that 0x0 is invalid pagetable address.

Change-Id: I213c0fbc1d90a13bef83c7d7589ad9e5729771fd
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
msm: mpm-of: fix for "cxo_lpm_clk is unbalanced" slowpath warning.

The variable xo_enabled needs protection. It might get called
simultaneously from suspend and mpm worker thread context.
Added a mutex to prevent this.

WARNING: at kernel/arch/arm/mach-msm/clock.c:411 clk_disable+0xc8/0x150()
cxo_lpm_clk is unbalanced
Modules linked in: adsprpc texfat(PO) mwlan_aarp(PO)
[<c010d24c>] (unwind_backtrace+0x0/0x138) from [<c01a0408>]
(warn_slowpath_common+0x4c/0x64)
[<c01a0408>] (warn_slowpath_common+0x4c/0x64) from [<c01a04b4>]
(warn_slowpath_fmt+0x30/0x40)
[<c01a04b4>] (warn_slowpath_fmt+0x30/0x40) from [<c011a068>]
(clk_disable+0xc8/0x150)
[<c011a068>] (clk_disable+0xc8/0x150) from [<c0180568>]
(msm_mpm_sys_low_power_modes+0x28/0x84)
[<c0180568>] (msm_mpm_sys_low_power_modes+0x28/0x84) from [<c0180768>]
(msm_mpm_work_fn+0x1c/0x5c)
[<c0180768>] (msm_mpm_work_fn+0x1c/0x5c) from [<c01b9568>]
(process_one_work+0x128/0x490)
[<c01b9568>] (process_one_work+0x128/0x490) from [<c01b9c14>]
(worker_thread+0x164/0x35c)
[<c01b9c14>] (worker_thread+0x164/0x35c) from [<c01be9a8>]
(kthread+0x88/0x94)
[<c01be9a8>] (kthread+0x88/0x94) from [<c0107a04>]
(kernel_thread_exit+0x0/0x8)
---[ end trace d18a7d72e45b272f ]---
------------[ cut here ]------------
WARNING: at kernel/arch/arm/mach-msm/clock.c:436 clk_unprepare+0xac/0xd4()
cxo_lpm_clk is unbalanced (prepare)
Modules linked in: adsprpc texfat(PO) mwlan_aarp(PO)
[<c010d24c>] (unwind_backtrace+0x0/0x138) from [<c01a0408>]
(warn_slowpath_common+0x4c/0x64)
[<c01a0408>] (warn_slowpath_common+0x4c/0x64) from [<c01a04b4>]
(warn_slowpath_fmt+0x30/0x40)
[<c01a04b4>] (warn_slowpath_fmt+0x30/0x40) from [<c011aa78>]
(clk_unprepare+0xac/0xd4)
[<c011aa78>] (clk_unprepare+0xac/0xd4) from [<c0180570>]
(msm_mpm_sys_low_power_modes+0x30/0x84)
[<c0180570>] (msm_mpm_sys_low_power_modes+0x30/0x84) from [<c0180768>]
(msm_mpm_work_fn+0x1c/0x5c)
[<c0180768>] (msm_mpm_work_fn+0x1c/0x5c) from [<c01b9568>]
(process_one_work+0x128/0x490)
[<c01b9568>] (process_one_work+0x128/0x490) from [<c01b9c14>]
(worker_thread+0x164/0x35c)
[<c01b9c14>] (worker_thread+0x164/0x35c) from [<c01be9a8>]
(kthread+0x88/0x94)
[<c01be9a8>] (kthread+0x88/0x94) from [<c0107a04>]
(kernel_thread_exit+0x0/0x8)
---[ end trace d18a7d72e45b2730 ]---

CRs-fixed: 596765
Change-Id: Ibe685e8f37eb63c4e9e9d3434719985f33c63376
Signed-off-by: Anil kumar mamidala <amami@codeaurora.org>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
defconfig: Disable some debugging

Signed-off-by: Dan Trifan <jimsth@gmail.com>
mm: vmscan: If kswapd has been running too long, allow it to sleep

Under constant allocation pressure, kswapd can be in the situation where
sleeping_prematurely() will always return true even if kswapd has been
running a long time. Check if kswapd needs to be scheduled.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
mm: slub: Default slub_max_order to 0

To avoid locking and per-cpu overhead, SLUB optimisically uses
high-order allocations up to order-3 by default and falls back to
lower allocations if they fail. While care is taken that the caller
and kswapd take no unusual steps in response to this, there are
further consequences like shrinkers who have to free more objects to
release any memory. There is anecdotal evidence that significant time
is being spent looping in shrinkers with insufficient progress being
made (https://lkml.org/lkml/2011/4/28/361) and keeping kswapd awake.

SLUB is now the default allocator and some bug reports have been
pinned down to SLUB using high orders during operations like
copying large amounts of data. SLUBs use of high-orders benefits
applications that are sized to memory appropriately but this does not
necessarily apply to large file servers or desktops.  This patch
causes SLUB to use order-0 pages like SLAB does by default.
There is further evidence that this keeps kswapd's usage lower
(https://lkml.org/lkml/2011/5/10/383).

Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
msm: kgsl: Use high priority workqueue

Signed-off-by: Dan Trifan <jimsth@gmail.com>
ASoC: msm: Null dereference check added

In asm_read function we should check buffer pointer
before it is dererferenced.

CRs-Fixed: 612682
Change-Id: I1968c038e1d35381bf174000287d542441e41092
Signed-off-by: Anish Kumar <kanish@codeaurora.org>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
WLAN subsystem: Sysctl support for key TCP/IP parameters

It has been observed that default values for some of key tcp/ip
parameters are affecting the tput/performance of the system. Hence
extending configuration capabilities to TCP/Ip stack through
sysctl interface

Change-Id: Ia92fc229c0a4a8c3f7e4e02cf7e3c8849719ddff
CRs-Fixed: 507581

Signed-off-by: Kiran Kumar Lokere <klokere@codeaurora.org>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
msm: msm_bus: Only set clock rate on unset clocks.

Checks to see if the clock is already set before
requesting a rounded(1) rate.

CRs-Fixed: 568026
Change-Id: I7adbcffd7c86c4e714573aad5bd3813480db2a48
Signed-off-by: Dan Sneddon <dsneddon@codeaurora.org>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
ASoC: msm: Update the correct channel count for dolby configuration

Wfd supports both 5.1 and stereo pcm playback. Add the dolby
configuration for 5.1 playback on wfd.

Signed-off-by: Dan Trifan <jimsth@gmail.com>

Conflicts:

	sound/soc/msm/qdsp6v2/msm-dolby-dap-config.c

CRs-Fixed: 609429
Change-Id: I6727ca1a4825bf64e48f211ca9d270f661ceedf0
Signed-off-by: Krishnankutty Kolathappilly <kkolat@codeaurora.org>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
ASoC: msm: Add PCM support in compress driver

PCM playback support is added to compress driver so that application
can use the single audio hardware device to play both compressed
and PCM audio.

Change-Id: Ie7719be8d7435088a7e4cfb5b817d4557e25e4c5
Signed-off-by: Dhananjay Kumar <dhakumar@codeaurora.org>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
msm: lpm_levels: fix incorrect mode select with next event time

Based on the next event timer value the best power mode will get
selected but there is a mismatch in calculation of selecting
the best mode. This change will fix that and selects the correct
mode based on the next wakeup time.

CRs-fixed: 611794
Change-Id: I31270e62b04e7a97afa1c9b0c45069ad82d1a9b0
Signed-off-by: Anil kumar mamidala <amami@codeaurora.org>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
ASoC: msm: qdsp6v2: Remove cmd_state from ASM header function

Cmd_state indicates whether the callback has been received
and whether the function should exit wait.
Remove setting of this variable in ASM header because
some functions such as get_session_time need ASM header
but do not need to modify this flag.

CRs-fixed: 613817
Change-Id: I6751cd89b3199c7350aaf1ebb70d7062ac65554f
Signed-off-by: Damir Didjusto <damird@codeaurora.org>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
msm: kgsl: Protect fault detect start with active count

Get the active count when enabling GFT from sysfs so the performance
counters can be properly programmed.

CRs-Fixed: 622252
Change-Id: Ic0dedbadfe56f8c66aca15fb521494a2fc00332b
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
ASoC: wcd9xxx: Add INP2, INP3, INP4 for IIR paths

Add INP2, INP3, INP4 for IIR paths to provide client to use
any one of the four different paths for sidetone

CRs-Fixed: 612492
Change-Id: I6087487604edc249c1f2451cb0d9635399ec74ba
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
msm: mdss: Sanitize overlay kickoff inputs

Overlay kickoff in certain situations can be called without a ctl
attached to the frame buffer device. These situations need to
be captured and logical path should return safely.

CRs-fixed: 619588
Change-Id: Ibee6b59be667b7e5c9841ffb49c67d86bde45026
Signed-off-by: Sree Sesha Aravind Vadrevu <svadrevu@codeaurora.org>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
mdss: display: initialize panel_mode at mdss_dsi_ctrl_init

Initialize dsi controller's panel_mode at mdss_dsi_ctrl_init()
due to mdss_dsi_host_init() is not called during boot up if
continuous splash is enabled. An unnecessary timeout will happen
for dcs command send of command mode panel if panel_mode is
initialized as video mode.

Change-Id: I041abcebb9479f3d55f2f21d560aced6c4b77b91
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Jayant Shekhar <jshekhar@codeaurora.org>
Signed-off-by: Dan Trifan <jimsth@gmail.com>