diff options
author | Christoph Hellwig <hch@lst.de> | 2014-11-03 20:15:14 +0100 |
---|---|---|
committer | Christoph Hellwig <hch@lst.de> | 2014-11-12 11:19:43 +0100 |
commit | c8b09f6fb67df7fc1b51ced1037fa9b677428149 (patch) | |
tree | 87527c3e17a7539c0ffa9f64fbd85ec2ad3dabf1 /drivers/scsi/eata.c | |
parent | 2ecb204d07ac8debe3893c362415919bc78bebd6 (diff) | |
download | linux-c8b09f6fb67df7fc1b51ced1037fa9b677428149.tar.gz linux-c8b09f6fb67df7fc1b51ced1037fa9b677428149.tar.bz2 linux-c8b09f6fb67df7fc1b51ced1037fa9b677428149.zip |
scsi: don't set tagging state from scsi_adjust_queue_depth
Remove the tagged argument from scsi_adjust_queue_depth, and just let it
handle the queue depth. For most drivers those two are fairly separate,
given that most modern drivers don't care about the SCSI "tagged" status
of a command at all, and many old drivers allow queuing of multiple
untagged commands in the driver.
Instead we start out with the ->simple_tags flag set before calling
->slave_configure, which is how all drivers actually looking at
->simple_tags except for one worke anyway. The one other case looks
broken, but I've kept the behavior as-is for now.
Except for that we only change ->simple_tags from the ->change_queue_type,
and when rejecting a tag message in a single driver, so keeping this
churn out of scsi_adjust_queue_depth is a clear win.
Now that the usage of scsi_adjust_queue_depth is more obvious we can
also remove all the trivial instances in ->slave_alloc or ->slave_configure
that just set it to the cmd_per_lun default.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/eata.c')
-rw-r--r-- | drivers/scsi/eata.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/scsi/eata.c b/drivers/scsi/eata.c index 943ad3a19661..bc0f918f1729 100644 --- a/drivers/scsi/eata.c +++ b/drivers/scsi/eata.c @@ -946,20 +946,18 @@ static int eata2x_slave_configure(struct scsi_device *dev) if (TLDEV(dev->type) && dev->tagged_supported) { if (tag_mode == TAG_SIMPLE) { - scsi_adjust_queue_depth(dev, MSG_SIMPLE_TAG, tqd); tag_suffix = ", simple tags"; } else if (tag_mode == TAG_ORDERED) { - scsi_adjust_queue_depth(dev, MSG_ORDERED_TAG, tqd); tag_suffix = ", ordered tags"; } else { - scsi_adjust_queue_depth(dev, 0, tqd); tag_suffix = ", no tags"; } + scsi_adjust_queue_depth(dev, tqd); } else if (TLDEV(dev->type) && linked_comm) { - scsi_adjust_queue_depth(dev, 0, tqd); + scsi_adjust_queue_depth(dev, tqd); tag_suffix = ", untagged"; } else { - scsi_adjust_queue_depth(dev, 0, utqd); + scsi_adjust_queue_depth(dev, utqd); tag_suffix = ""; } |