From: Jens Axboe <axboe@xxxxxx> Commit 1e6f2416044c0 changed the scsi sysfs 'queue_depth' code to rejects depths higher than the scsi host template setting. But lots of hosts set this to 1, and update the settings in the scsi host when the controller/devices probing happens. This breaks (at least) mpt2sas and mpt3sas runtime setting of queue depth, returning EINVAL for all settings but '1'. And once it's set to 1, there's no way to go back up. Cc: stable@xxxxxxxxxxxxxxx Fixes: 1e6f2416044c0 "scsi: don't allow setting of queue_depth bigger than can_queue" Signed-off-by: Jens Axboe <axboe@xxxxxx> Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx> Signed-off-by: James Bottomley <JBottomley@xxxxxxxx> --- drivers/scsi/scsi_sysfs.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index 1ac38e7..9ad4116 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -859,7 +859,7 @@ sdev_store_queue_depth(struct device *dev, struct device_attribute *attr, depth = simple_strtoul(buf, NULL, 0); - if (depth < 1 || depth > sht->can_queue) + if (depth < 1 || depth > sdev->host->can_queue) return -EINVAL; retval = sht->change_queue_depth(sdev, depth); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html