radio-tavarua: Handle I2C read/write errors during sleep mode.

Getting read/write errors when the I2C is not resumed from the sleep

Added re-try mechanism to handle during I2C read/write

Change-Id: I5a533b085ccfcda2181a2d5ea792bbb3d187c477
CRs-Fixed: 427937
Signed-off-by: Venkateshwarlu Domakonda <Venkateshwarlu@codeaurora.org>
radio: iris: Add synchronize mechanism to handle multiple command requests

Used mutex to synchronize the command requests.

Change-Id: Ie58b996bbc76b36095020556a2046b7aa5c351fa
CRs-Fixed: 448591
Signed-off-by: Venkateshwarlu Domakonda <Venkateshwarlu@codeaurora.org>
ipv4: fix the rcu race between free_fib_info and ip_route_output_slow

We hit a kernel OOPS.

<3>[23898.789643] BUG: sleeping function called from invalid context at
/data/buildbot/workdir/ics/hardware/intel/linux-2.6/arch/x86/mm/fault.c:1103
<3>[23898.862215] in_atomic(): 0, irqs_disabled(): 0, pid: 10526, name:
Thread-6683
<4>[23898.967805] HSU serial 0000:00:05.1: 0000:00:05.2:HSU serial prevented me
to suspend...
<4>[23899.258526] Pid: 10526, comm: Thread-6683 Tainted: G        W
3.0.8-137685-ge7742f9 #1
<4>[23899.357404] HSU serial 0000:00:05.1: 0000:00:05.2:HSU serial prevented me
to suspend...
<4>[23899.904225] Call Trace:
<4>[23899.989209]  [<c1227f50>] ? pgtable_bad+0x130/0x130
<4>[23900.000416]  [<c1238c2a>] __might_sleep+0x10a/0x110
<4>[23900.007357]  [<c1228021>] do_page_fault+0xd1/0x3c0
<4>[23900.013764]  [<c18e9ba9>] ? restore_all+0xf/0xf
<4>[23900.024024]  [<c17c007b>] ? napi_complete+0x8b/0x690
<4>[23900.029297]  [<c1227f50>] ? pgtable_bad+0x130/0x130
<4>[23900.123739]  [<c1227f50>] ? pgtable_bad+0x130/0x130
<4>[23900.128955]  [<c18ea0c3>] error_code+0x5f/0x64
<4>[23900.133466]  [<c1227f50>] ? pgtable_bad+0x130/0x130
<4>[23900.138450]  [<c17f6298>] ? __ip_route_output_key+0x698/0x7c0
<4>[23900.144312]  [<c17f5f8d>] ? __ip_route_output_key+0x38d/0x7c0
<4>[23900.150730]  [<c17f63df>] ip_route_output_flow+0x1f/0x60
<4>[23900.156261]  [<c181de58>] ip4_datagram_connect+0x188/0x2b0
<4>[23900.161960]  [<c18e981f>] ? _raw_spin_unlock_bh+0x1f/0x30
<4>[23900.167834]  [<c18298d6>] inet_dgram_connect+0x36/0x80
<4>[23900.173224]  [<c14f9e88>] ? _copy_from_user+0x48/0x140
<4>[23900.178817]  [<c17ab9da>] sys_connect+0x9a/0xd0
<4>[23900.183538]  [<c132e93c>] ? alloc_file+0xdc/0x240
<4>[23900.189111]  [<c123925d>] ? sub_preempt_count+0x3d/0x50

Function free_fib_info resets nexthop_nh->nh_dev to NULL before releasing
fi. Other cpu might be accessing fi. Fixing it by delaying the releasing.

With the patch, we ran MTBF testing on Android mobile for 12 hours
and didn't trigger the issue.

Thank Eric for very detailed review/checking the issue.

CRs-fixed: 430941
Change-Id: I14480ff9085a8e13fe43ea14bfa53fb7b77384b3
Signed-off-by: Yanmin Zhang <yanmin_zhang@linux.intel.com>
Signed-off-by: Kun Jiang <kunx.jiang@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Git-commit: e49cc0da7283088c5e03d475ffe2fdcb24a6d5b1
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Signed-off-by: Jay Chokshi <jchokshi@codeaurora.org>
msm: thermal: Use signed int for temperature

Temperatures could be in negative and negative signed ints may be
incorrectly read as unsigned int.

Change-Id: I817db2756c54816296a700ffcd004a83161f2b95
CRs-Fixed: 441632, 473507
Signed-off-by: Praveen Chidambaram <pchidamb@codeaurora.org>
Merge "ipv4: fix the rcu race between free_fib_info and ip_route_output_slow"
Merge "radio-tavarua: Handle I2C read/write errors during sleep mode."
Merge "radio: iris: Add synchronize mechanism to handle multiple command requests"
Merge "msm: thermal: Use signed int for temperature"