tree 8da2d66cd14c0cb3057074db4cbd503ac0f5a990
parent 5e0f482227d88c6e689e8dfbd3d9741c2f9e582d
author Manish Dewangan <manish@codeaurora.org> 1328701014 +0530
committer Manish Dewangan <manish@codeaurora.org> 1330182677 +0530

qdsp5: audio: Protect common data between ADSP ISR and flush operation

During NEEDS_DATA or BUFFER_UPDATE event processing in ISR
context, if flush command is issued by application then
there is chance of concurrent access of some of the variables
shared between ISR and Process context. This may result in race
condition causing values of these shared variables to be
inconsistent.

Fix this by protecting these variables using spin lock. Also corrected
locking sequence order in encode drivers.

Change-Id: I06b4d08053ad13d1b118ab6f29e69e95b49d133f
Signed-off-by: Manish Dewangan <manish@codeaurora.org>