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-rw-r--r--drivers/md/dm-mpath.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 0caab4bf3515..6400cffb986d 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -850,18 +850,22 @@ retain:
attached_handler_name = scsi_dh_attached_handler_name(q, GFP_KERNEL);
if (attached_handler_name) {
/*
+ * Clear any hw_handler_params associated with a
+ * handler that isn't already attached.
+ */
+ if (m->hw_handler_name && strcmp(attached_handler_name, m->hw_handler_name)) {
+ kfree(m->hw_handler_params);
+ m->hw_handler_params = NULL;
+ }
+
+ /*
* Reset hw_handler_name to match the attached handler
- * and clear any hw_handler_params associated with the
- * ignored handler.
*
* NB. This modifies the table line to show the actual
* handler instead of the original table passed in.
*/
kfree(m->hw_handler_name);
m->hw_handler_name = attached_handler_name;
-
- kfree(m->hw_handler_params);
- m->hw_handler_params = NULL;
}
}