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libata-sff: kill spurious WARN_ON() in ata_hsm_move()

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On HSM_ST_ERR, ata_hsm_move() triggers WARN_ON() if AC_ERR_DEV or
AC_ERR_HSM is not set.  PHY events may trigger HSM_ST_ERR with other
error codes and, with or without it, there just isn't much reason to
do WARN_ON() on it.  Even if error code is not set there, core EH
logic won't have any problem dealing with the error condition.

OSDL bz#11065 reports this problem.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Tejun Heo 2008-08-29 16:27:43 +02:00 committed by Jeff Garzik
parent 2fd673ecf0
commit 9c2676b61a
1 changed files with 0 additions and 5 deletions
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5
drivers/ata/libata-sff.c
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@ -1315,11 +1315,6 @@ int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
break;
case HSM_ST_ERR:
/* make sure qc->err_mask is available to
* know what's wrong and recover
*/
WARN_ON(!(qc->err_mask & (AC_ERR_DEV | AC_ERR_HSM)));
ap->hsm_task_state = HSM_ST_IDLE;
/* complete taskfile transaction */