From c40ecc12cfdb630332198a04e2832ae8218a61f1 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 13 Nov 2014 14:25:11 +0100 Subject: 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 Reviewed-by: Mike Christie Reviewed-by: Hannes Reinecke Reviewed-by: Venkatesh Srinivas --- drivers/scsi/libsas/sas_scsi_host.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-) (limited to 'drivers/scsi/libsas') 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; } -- cgit