From e881a172dac4d9ea3b2a1540041d872963c269bd Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Thu, 15 Oct 2009 17:46:39 -0700 Subject: [SCSI] modify change_queue_depth to take in reason why it is being called This patch modifies scsi_host_template->change_queue_depth so that it takes an argument indicating why it is being called. This will be used so that if a LLD needs to do some extra processing when handling queue fulls or later ramp ups, it can do so. This is a simple port of the drivers setting a change_queue_depth callback. In the patch I just have these LLDs adjust the queue depth if the user was requesting it. Signed-off-by: Mike Christie [Vasu.Dev: v2 Also converted pmcraid_change_queue_depth and then verified all modules compile using "make allmodconfig" for any new build warnings on X86_64. Updated original description after combing two original patches from Mike to make this patch git bisectable.] Signed-off-by: Vasu Dev [jejb: fixed up 53c700] Signed-off-by: James Bottomley --- drivers/scsi/pmcraid.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers/scsi/pmcraid.c') diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c index f7c70e2a822..86d158ee357 100644 --- a/drivers/scsi/pmcraid.c +++ b/drivers/scsi/pmcraid.c @@ -278,12 +278,17 @@ static void pmcraid_slave_destroy(struct scsi_device *scsi_dev) * pmcraid_change_queue_depth - Change the device's queue depth * @scsi_dev: scsi device struct * @depth: depth to set + * @reason: calling context * * Return value * actual depth set */ -static int pmcraid_change_queue_depth(struct scsi_device *scsi_dev, int depth) +static int pmcraid_change_queue_depth(struct scsi_device *scsi_dev, int depth, + int reason) { + if (reason != SCSI_QDEPTH_DEFAULT) + return -EOPNOTSUPP; + if (depth > PMCRAID_MAX_CMD_PER_LUN) depth = PMCRAID_MAX_CMD_PER_LUN; -- cgit v1.2.3