tree fbae079c8ca9b22103a1e11439ae8b738d756c72
parent 85455dd34219376dcc7dce94bea67058f0b7d731
author Tejun Heo <htejun@gmail.com> 1155013739 +0900
committer Jeff Garzik <jeff@garzik.org> 1155100587 -0400

[PATCH] libata: clear sdev->locked on door lock failure

SCSI EH locks door if sdev->locked is set.  Sometimes door lock
command fails continuously (e.g. when medium is not present) and as
libata uses EH to acquire sense data, this easily creates a loop where
a failed lock door invokes EH and EH issues lock door on completion.

This patch clears sdev->locked on door lock failure to break this
loop.  This problem has been spotted and diagnosed by Unicorn Chang
<uchang@tw.ibm.com>.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>