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scsi: provide a generic change_queue_type method

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Most drivers use exactly the same implementation, so provide it as a
library function.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
This commit is contained in:
Christoph Hellwig
2014-10-02 14:39:55 +02:00
parent 1d5203284d
commit a62182f338
19 changed files with 42 additions and 228 deletions
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20
drivers/scsi/esas2r/esas2r_main.c
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@@ -258,7 +258,7 @@ static struct scsi_host_template driver_template = {
.slave_alloc = esas2r_slave_alloc,
.slave_destroy = esas2r_slave_destroy,
.change_queue_depth = esas2r_change_queue_depth,
.change_queue_type = esas2r_change_queue_type,
.change_queue_type = scsi_change_queue_type,
.max_sectors = 0xFFFF,
};
@@ -1268,24 +1268,6 @@ int esas2r_change_queue_depth(struct scsi_device *dev, int depth, int reason)
return dev->queue_depth;
}
int esas2r_change_queue_type(struct scsi_device *dev, int type)
{
esas2r_log(ESAS2R_LOG_INFO, "change_queue_type %p, %d", dev, type);
if (dev->tagged_supported) {
scsi_set_tag_type(dev, type);
if (type)
scsi_activate_tcq(dev, dev->queue_depth);
else
scsi_deactivate_tcq(dev, dev->queue_depth);
} else {
type = 0;
}
return type;
}
int esas2r_slave_alloc(struct scsi_device *dev)
{
return 0;