drm: rcar-du: fix error return code
authorJulia Lawall <Julia.Lawall@lip6.fr>
Sun, 23 Nov 2014 13:11:17 +0000 (14:11 +0100)
committerLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Wed, 26 Nov 2014 18:09:30 +0000 (20:09 +0200)
commit6512f5fb0a28e26f473085b890ada519e0f37d70
tree77d5545434e3f8e38e7721b336d75c954006db65
parenta218df07ca71eb3b640b7e58c61f4ff84d2ebaad
drm: rcar-du: fix error return code

Propagate the error code on failure.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
drivers/gpu/drm/rcar-du/rcar_du_crtc.c