ASoC: DPCM: Remove redundant code introduced during framework update

There is redundant code introduced during ALSA DPCM update to add
support for compressed audio, which calls the soc_pcm_prepare()
twice. Update to remove the reduandant code.

Signed-off-by: Kuirong Wang <kuirongw@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
ASoC: msm: qdsp6v2: SLIM_RX and I2S_RX is internal echo reference

We should not trigger SLIM TX backend for SLIM_RX and I2S_RX
widgets as those are internal echo references.

Signed-off-by: Anish Kumar <kanish@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
msm: vidc: Fix various decoder downscalar issues

Queue output buffers without extradata to Venus.
Venus is returning UPSCALE_NOT_SUPPORTED error when
output2 size is bigger than output size. This change
suppresses this error as it is not fatal.

Signed-off-by: Manikanta Sivapala <msivap@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
msm_serial_hs: Fix the logic for numbering the serial device

This patch fixes the way the UART nodes are enumerated when
aliases are used to identify the nodes. The atomic variable that
used to hold the next available node number was incorrectly being
incremented and if that number were to hold a number that was also
used in an alias, the probe would fail. This patch corrects it.
It also removes the atomic variable and introduces two apis to set
and get the next device number and this logic is protected by a mutex.

Signed-off-by: Naveen Kaje <nkaje@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
msm8974: vib: Restore original bits

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
zram: correct offset usage in zram_bio_discard

We want to skip the physical block(PAGE_SIZE) which is partially covered
by the discard bio, so we check the remaining size and subtract it if
there is a need to goto the next physical block.

The current offset usage in zram_bio_discard is incorrect, it will cause
its upper filesystem breakdown.  Consider the following scenario:

On some architecture or config, PAGE_SIZE is 64K for example, filesystem
is set up on zram disk without PAGE_SIZE aligned, a discard bio leads to a
offset = 4K and size=72K, normally, it should not really discard any
physical block as it partially cover two physical blocks.  However, with
the current offset usage, it will discard the second physical block and
free its memory, which will cause filesystem breakdown.

This patch corrects the offset usage in zram_bio_discard.

Signed-off-by: Weijie Yang <weijie.yang@samsung.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Acked-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Bob Liu <bob.liu@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
time: RCU permitted to stop idle entry via softirq

The can_stop_idle_tick() function complains if a softirq vector is
raised too late in the idle-entry process, presumably in order to
prevent dangling softirq invocations from being delayed across the
full idle period, which might be indefinitely long -- and if softirq
was asserted any later than the call to this function, such a delay
might well happen.

However, RCU needs to be able to use softirq to stop idle entry in
order to be able to drain RCU callbacks from the current CPU, which in
turn enables faster entry into dyntick-idle mode, which in turn reduces
power consumption.  Because RCU takes this action at a well-defined
point in the idle-entry path, it is safe for RCU to take this approach.

This commit therefore silences the error message that is sometimes
produced when the going-idle CPU suddenly finds that it has an RCU_SOFTIRQ
to process.  The error message will continue to be issued for other
softirq vectors.

Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
tick: Change log level of NOHZ: local_softirq_pending message

The "NOHZ: local_softirq_pending" message is a largely informational
message.  This makes extra work for customers that have a policy of
investigating all kernel log messages logged at <= KERN_ERR log level.
This patch sets the message to a different log level.

[ tglx: Use pr_warn() ]

Signed-off-by: Rado Vrbovsky <rvrbovsk@redhat.com>
Cc: Don Zickus <dzickus@redhat.com>
Link: http://lkml.kernel.org/r/2037057938.893524.1360345050772.JavaMail.root@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
time: Kill xtime_lock, replacing it with jiffies_lock

Now that timekeeping is protected by its own locks, rename
the xtime_lock to jifffies_lock to better describe what it
protects.

CC: Thomas Gleixner <tglx@linutronix.de>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>