1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index d234b6c33646..f8369697af12 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -1364,7 +1364,7 @@ static int switch_pg_num(struct multipath *m, const char *pgstr)
         char dummy;
 
         if (!pgstr || (sscanf(pgstr, "%u%c", &pgnum, &dummy) != 1) || !pgnum ||
-            (pgnum > m->nr_priority_groups)) {
+            !m->nr_priority_groups || (pgnum > m->nr_priority_groups)) {
                 DMWARN("invalid PG number supplied to switch_pg_num");
                 return -EINVAL;
         }
@@ -1396,7 +1396,7 @@ static int bypass_pg_num(struct multipath *m, const char *pgstr, bool bypassed)
         char dummy;
 
         if (!pgstr || (sscanf(pgstr, "%u%c", &pgnum, &dummy) != 1) || !pgnum ||
-            (pgnum > m->nr_priority_groups)) {
+            !m->nr_priority_groups || (pgnum > m->nr_priority_groups)) {
                 DMWARN("invalid PG number supplied to bypass_pg");
                 return -EINVAL;
         }