tree f78b05aa4cb1e15ae77391876c59bb1967104bca
parent e5ad406cecc3a13bd1e6242d3e24aaeae32ff972
author Yaniv Gardi <ygardi@codeaurora.org> 1454331762 +0200
committer Martin K. Petersen <martin.petersen@oracle.com> 1456280822 -0500

scsi: ufs: avoid exception event handler racing with PM callbacks

If device raises the exception event in the response to the commands
sent during the runtime/system PM callbacks, exception event handler
might run in parallel with PM callbacks and may see unclocked register
accesses. This change fixes this issue by not scheduling the exception
event handler while PM callbacks are running.

Reviewed-by: Gilad Broner <gbroner@codeaurora.org>
Reviewed-by: Dolev Raviv <draviv@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>