staging: android: logger: Correct write offset reset on error
authorKarlis Ogsts <karlis.ogsts@sonymobile.com>
Mon, 22 Jul 2013 20:51:42 +0000 (13:51 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 23 Jul 2013 22:08:50 +0000 (15:08 -0700)
commit72bb99cfe9c57d2044445fb34bbc95b4c0bae6f2
tree6a16268fd96d01eda5d3a592415f94dbd0505d65
parent644d478793c6594277f8ae76954da4ace7ac6f96
staging: android: logger: Correct write offset reset on error

In the situation that a writer fails to copy data from userspace it will reset
the write offset to the value it had before it went to sleep. This discarding
any messages written while aquiring the mutex.

Therefore the reset offset needs to be retrieved after acquiring the mutex.

Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/android/logger.c