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>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c
index 897562056018..a81e546595dd 100644
--- a/drivers/scsi/isci/init.c
+++ b/drivers/scsi/isci/init.c
@@ -173,6 +173,7 @@ static struct scsi_host_template isci_sht = {
         .ioctl                          = sas_ioctl,
         .shost_attrs                    = isci_host_attrs,
         .use_blk_tags                   = 1,
+        .track_queue_depth              = 1,
 };
 
 static struct sas_domain_function_template isci_transport_ops  = {