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authorMike Snitzer <snitzer@redhat.com>2018-03-29 11:50:10 -0400
committerMike Snitzer <snitzer@redhat.com>2018-03-29 17:00:44 -0400
commite457edf0b21c873be827b7c2f6b8e1545485c415 (patch)
tree7c4e9c4264630804c3a9addca82e6183bfa389f7
parent8c5c147339d2e201108169327b1f99aa6d57d2cd (diff)
downloadlinux-sh-e457edf0b21c873be827b7c2f6b8e1545485c415.tar.gz
dm mpath: fix support for loading scsi_dh modules during table load
The ability to have multipath dynamically attach a scsi_dh, that the user specified in the multipath table, was broken by commit e8f74a0f00 ("dm mpath: eliminate need to use scsi_device_from_queue"). Restore the ability to load, and attach, a particular scsi_dh module if one is specified (as noticed by checking m->hw_handler_name). Fixes: e8f74a0f00 ("dm mpath: eliminate need to use scsi_device_from_queue") Reported-by: Paul Mackerras <paulus@ozlabs.org> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
-rw-r--r--drivers/md/dm-mpath.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index a05a560d3cba..a6b7baf31cdd 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -887,7 +887,7 @@ static struct pgpath *parse_path(struct dm_arg_set *as, struct path_selector *ps
q = bdev_get_queue(p->path.dev->bdev);
attached_handler_name = scsi_dh_attached_handler_name(q, GFP_KERNEL);
- if (attached_handler_name) {
+ if (attached_handler_name || m->hw_handler_name) {
INIT_DELAYED_WORK(&p->activate_path, activate_path_work);
r = setup_scsi_dh(p->path.dev->bdev, m, attached_handler_name, &ti->error);
if (r) {