cciss: Set the performant mode bit in the scsi half of the driver
cciss: Set the performant mode bit in the scsi half of the driver
In a couple of places, the performant mode bit wasn't being set in
the scsi half of the driver, causing commands to seem to hang. Use
enqueue_cmd_and_start_io() where appropriate. This fixes a bug that
echo engage scsi > /proc/driver/cciss/cciss0
would hang.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/drivers/block/cciss_scsi.c b/drivers/block/cciss_scsi.c
index 8e0a709..3604b72 100644
--- a/drivers/block/cciss_scsi.c
+++ b/drivers/block/cciss_scsi.c
@@ -921,7 +921,6 @@
unsigned char *buf, int bufsize,
int direction)
{
- unsigned long flags;
DECLARE_COMPLETION_ONSTACK(wait);
cp->cmd_type = CMD_IOCTL_PEND; // treat this like an ioctl
@@ -948,14 +947,7 @@
bufsize, DMA_FROM_DEVICE);
cp->waiting = &wait;
-
- /* Put the request on the tail of the request queue */
- spin_lock_irqsave(CCISS_LOCK(c->ctlr), flags);
- addQ(&c->reqQ, cp);
- c->Qdepth++;
- start_io(c);
- spin_unlock_irqrestore(CCISS_LOCK(c->ctlr), flags);
-
+ enqueue_cmd_and_start_io(c, cp);
wait_for_completion(&wait);
/* undo the dma mapping */
@@ -1525,15 +1517,7 @@
break;
}
cciss_scatter_gather(c, cp, cmd);
-
- /* Put the request on the tail of the request queue */
-
- spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
- addQ(&c->reqQ, cp);
- c->Qdepth++;
- start_io(c);
- spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
-
+ enqueue_cmd_and_start_io(c, cp);
/* the cmd'll come back via intr handler in complete_scsi_command() */
return 0;
}