On Saturday, June 10, 2006 11:36 PM, James Bottomley wrote:
> _req = get_req(hba);
> if (_req == NULL) {
> dprintk("hptiop_queuecmd : no free req\n");
> scp->result = DID_BUS_BUSY << 16;
> goto cmd_done;
> }
>
> This should be doing a return SCSI_MLQUEUE_HOST_BUSY. DID_BUS_BUSY
> doesn't do the resource contention counting that you want
> (MLQUEUE_HOST_BUSY will wait until a command returns ... presumably
> freeing up resources before trying another).
Right, this should be modified.
> /*
> * hptiop_shutdown will flash controller cache.
> */
> if (scp->cmnd[0] == SYNCHRONIZE_CACHE) {
> scp->result = DID_OK<<16;
> goto cmd_done;
> }
>
> Are you really sure you want to do this? It looks like we'll be doing
> this in cases where shutdown won't be called (like suspend).
These lines should be removed. The controller firmware will response to
SYNCHRONIZE_CACHE command.
> host->can_queue = le32_to_cpu(iop_config.max_requests);
> host->cmd_per_lun = le32_to_cpu(iop_config.max_requests);
>
> You might want to think about adjusting this. For the single LUN case,
> it's fine. For the multi-lun case it may allow commands to a single LUN
> to starve everything else.
There will be no multi-lun support for the controller so this is not
an issue.
Signed-off-by: HighPoint Linux Team <[email protected]>
---
diff --git a/drivers/scsi/hptiop.c b/drivers/scsi/hptiop.c
index 8302f3b..7806c45 100644
--- a/drivers/scsi/hptiop.c
+++ b/drivers/scsi/hptiop.c
@@ -504,18 +504,10 @@ static int hptiop_queuecommand(struct sc
BUG_ON(!done);
scp->scsi_done = done;
- /*
- * hptiop_shutdown will flash controller cache.
- */
- if (scp->cmnd[0] == SYNCHRONIZE_CACHE) {
- scp->result = DID_OK<<16;
- goto cmd_done;
- }
-
_req = get_req(hba);
if (_req == NULL) {
dprintk("hptiop_queuecmd : no free req\n");
- scp->result = DID_BUS_BUSY << 16;
+ scp->result = SCSI_MLQUEUE_HOST_BUSY;
goto cmd_done;
}
-
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