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authorJens Axboe <axboe@kernel.dk>2018-11-01 16:36:27 -0600
committerJens Axboe <axboe@kernel.dk>2018-11-07 13:42:32 -0700
commitf664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6 (patch)
treed49b6866c48f12638ae5e8dcbddf97d0074243e4 /drivers/scsi/hosts.c
parent3a7ea2c483a53fc89e336f69c6ee1d7defe00811 (diff)
downloadlinux-f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6.tar.bz2
scsi: kill off the legacy IO path
This removes the legacy (non-mq) IO path for SCSI. Cc: linux-scsi@vger.kernel.org Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Omar Sandoval <osandov@fb.com> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/scsi/hosts.c')
-rw-r--r--drivers/scsi/hosts.c29
1 files changed, 6 insertions, 23 deletions
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index ea4b0bb0c1cd..cc71136ba300 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -222,18 +222,9 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct device *dev,
if (error)
goto fail;
- if (shost_use_blk_mq(shost)) {
- error = scsi_mq_setup_tags(shost);
- if (error)
- goto fail;
- } else {
- shost->bqt = blk_init_tags(shost->can_queue,
- shost->hostt->tag_alloc_policy);
- if (!shost->bqt) {
- error = -ENOMEM;
- goto fail;
- }
- }
+ error = scsi_mq_setup_tags(shost);
+ if (error)
+ goto fail;
if (!shost->shost_gendev.parent)
shost->shost_gendev.parent = dev ? dev : &platform_bus;
@@ -309,8 +300,7 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct device *dev,
pm_runtime_disable(&shost->shost_gendev);
pm_runtime_set_suspended(&shost->shost_gendev);
pm_runtime_put_noidle(&shost->shost_gendev);
- if (shost_use_blk_mq(shost))
- scsi_mq_destroy_tags(shost);
+ scsi_mq_destroy_tags(shost);
fail:
return error;
}
@@ -344,13 +334,8 @@ static void scsi_host_dev_release(struct device *dev)
kfree(dev_name(&shost->shost_dev));
}
- if (shost_use_blk_mq(shost)) {
- if (shost->tag_set.tags)
- scsi_mq_destroy_tags(shost);
- } else {
- if (shost->bqt)
- blk_free_tags(shost->bqt);
- }
+ if (shost->tag_set.tags)
+ scsi_mq_destroy_tags(shost);
kfree(shost->shost_data);
@@ -472,8 +457,6 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize)
else
shost->dma_boundary = 0xffffffff;
- shost->use_blk_mq = scsi_use_blk_mq || shost->hostt->force_blk_mq;
-
device_initialize(&shost->shost_gendev);
dev_set_name(&shost->shost_gendev, "host%d", shost->host_no);
shost->shost_gendev.bus = &scsi_bus_type;