[PATCH] libata: implement and apply ata_eh_qc_complete/retry()

Implement ata_eh_qc_complete/retry() using scsi_eh_finish_cmd() and
scsi_eh_flush_done_q().  This removes all eh scsicmd finish hacks from
low level drivers.

This change was first suggested by Jeff Garzik.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 1 insertions, 11 deletions

diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c
index 281223a0e45f..d9a554ca45c7 100644
--- a/drivers/scsi/sata_mv.c
+++ b/drivers/scsi/sata_mv.c
@@ -1839,7 +1839,6 @@ static void mv_phy_reset(struct ata_port *ap)
 static void mv_eng_timeout(struct ata_port *ap)
 {
         struct ata_queued_cmd *qc;
-        unsigned long flags;
 
         printk(KERN_ERR "ata%u: Entering mv_eng_timeout\n",ap->id);
         DPRINTK("All regs @ start of eng_timeout\n");
@@ -1858,17 +1857,8 @@ static void mv_eng_timeout(struct ata_port *ap)
                 printk(KERN_ERR "ata%u: BUG: timeout without command\n",
                        ap->id);
         } else {
-                /* hack alert!  We cannot use the supplied completion
-                 * function from inside the ->eh_strategy_handler() thread.
-                 * libata is the only user of ->eh_strategy_handler() in
-                 * any kernel, so the default scsi_done() assumes it is
-                 * not being called from the SCSI EH.
-                 */
-                spin_lock_irqsave(&ap->host_set->lock, flags);
-                qc->scsidone = scsi_finish_command;
                 qc->err_mask |= AC_ERR_TIMEOUT;
-                ata_qc_complete(qc);
-                spin_unlock_irqrestore(&ap->host_set->lock, flags);
+                ata_eh_qc_complete(qc);
         }
 }