tree 797af00762847745eb34f1fa6241f5d157fd5f04
parent a64685399181780998281fe07309a94b25dd24c3
author NeilBrown <neilb@suse.de> 1361421398 +1100
committer NeilBrown <neilb@suse.de> 1361840224 +1100

md: raid0: fix error return from create_stripe_zones.

Create_stripe_zones returns an error slightly differently to
raid0_run and to raid0_takeover_*.

The error returned used by the second was wrong and an error would
result in mddev->private being set to NULL and sooner or later a
crash.

So never return NULL, return ERR_PTR(err), not NULL from
create_stripe_zones.

This bug has been present since 2.6.35 so the fix is suitable
for any kernel since then.

Cc: stable@vger.kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>