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/ibmvscsi/ibmvfc.c | 7 ++++++- drivers/scsi/ibmvscsi/ibmvscsi.c | 7 ++++++- 2 files changed, 12 insertions(+), 2 deletions(-) (limited to 'drivers/scsi/ibmvscsi') diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index bc9beb8..87b536a 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -2764,12 +2764,17 @@ static int ibmvfc_slave_configure(struct scsi_device *sdev) * ibmvfc_change_queue_depth - Change the device's queue depth * @sdev: scsi device struct * @qdepth: depth to set + * @reason: calling context * * Return value: * actual depth set **/ -static int ibmvfc_change_queue_depth(struct scsi_device *sdev, int qdepth) +static int ibmvfc_change_queue_depth(struct scsi_device *sdev, int qdepth, + int reason) { + if (reason != SCSI_QDEPTH_DEFAULT) + return -EOPNOTSUPP; + if (qdepth > IBMVFC_MAX_CMDS_PER_LUN) qdepth = IBMVFC_MAX_CMDS_PER_LUN; diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c index d9b0e9d..e475b79 100644 --- a/drivers/scsi/ibmvscsi/ibmvscsi.c +++ b/drivers/scsi/ibmvscsi/ibmvscsi.c @@ -1637,12 +1637,17 @@ static int ibmvscsi_slave_configure(struct scsi_device *sdev) * ibmvscsi_change_queue_depth - Change the device's queue depth * @sdev: scsi device struct * @qdepth: depth to set + * @reason: calling context * * Return value: * actual depth set **/ -static int ibmvscsi_change_queue_depth(struct scsi_device *sdev, int qdepth) +static int ibmvscsi_change_queue_depth(struct scsi_device *sdev, int qdepth, + int reason) { + if (reason != SCSI_QDEPTH_DEFAULT) + return -EOPNOTSUPP; + if (qdepth > IBMVSCSI_MAX_CMDS_PER_LUN) qdepth = IBMVSCSI_MAX_CMDS_PER_LUN; -- cgit v1.1