diff options
| author | Christoph Hellwig <hch@lst.de> | 2014-11-13 14:25:11 +0100 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-11-24 14:45:12 +0100 |
| commit | c40ecc12cfdb630332198a04e2832ae8218a61f1 (patch) | |
| tree | 881456a7d46ca017dba4cc003e2fe1be427614fc /drivers/scsi/libsas | |
| parent | 89dac7bb3b0494685241369951f95494e86ee61f (diff) | |
scsi: avoid ->change_queue_depth indirection for queue full tracking
All drivers use the implementation for ramping the queue up and down, so
instead of overloading the change_queue_depth method call the
implementation diretly if the driver opts into it by setting the
track_queue_depth flag in the host template.
Note that a few drivers validated the new queue depth in their
change_queue_depth method, but as we never go over the queue depth
set during slave_configure or the sysfs file this isn't nessecary
and can safely be removed.
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: Venkatesh Srinivas <venkateshs@google.com>
Diffstat (limited to 'drivers/scsi/libsas')
| -rw-r--r-- | drivers/scsi/libsas/sas_scsi_host.c | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c index 89e8b687a679..914e41165137 100644 --- a/drivers/scsi/libsas/sas_scsi_host.c +++ b/drivers/scsi/libsas/sas_scsi_host.c @@ -961,20 +961,9 @@ int sas_change_queue_depth(struct scsi_device *sdev, int depth, int reason) return __ata_change_queue_depth(dev->sata_dev.ap, sdev, depth, reason); - switch (reason) { - case SCSI_QDEPTH_DEFAULT: - case SCSI_QDEPTH_RAMP_UP: - if (!sdev->tagged_supported) - depth = 1; - scsi_adjust_queue_depth(sdev, depth); - break; - case SCSI_QDEPTH_QFULL: - scsi_track_queue_full(sdev, depth); - break; - default: - return -EOPNOTSUPP; - } - + if (!sdev->tagged_supported) + depth = 1; + scsi_adjust_queue_depth(sdev, depth); return depth; } |