md: raid5: chunk size check in setup_conf

have raid5 check chunk size in run/reshape method instead of in md

Signed-off-by: raziebe@gmail.com
Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 7fb97c65ad37..be4e62f611bc 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4336,7 +4336,8 @@ static raid5_conf_t *setup_conf(mddev_t *mddev)
                 return ERR_PTR(-EINVAL);
         }
 
-        if (!mddev->new_chunk || mddev->new_chunk % PAGE_SIZE) {
+        if (!mddev->new_chunk || mddev->new_chunk % PAGE_SIZE ||
+            !is_power_of_2(mddev->new_chunk)) {
                 printk(KERN_ERR "raid5: invalid chunk size %d for %s\n",
                         mddev->new_chunk, mdname(mddev));
                 return ERR_PTR(-EINVAL);