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| author | Thierry Reding <thierry.reding@avionic-design.de> | 2012-10-20 10:32:47 +0000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-10-23 10:14:58 +1000 |
| commit | 028132451667ffd25b6814d47a622ec03cb8cba7 (patch) | |
| tree | 6c73fe777af9c267263e58dc040f339fccc9d30f | |
| parent | e0d78d08e3c06ebe2eb45b4d84f8cd5d1b13d371 (diff) | |
| download | blackbird-op-linux-028132451667ffd25b6814d47a622ec03cb8cba7.tar.gz blackbird-op-linux-028132451667ffd25b6814d47a622ec03cb8cba7.zip | |
drm: fb: cma: Fail gracefully on allocation failure
The drm_gem_cma_create() function never returns NULL but rather an error
encoded in the return value using the ERR_PTR() macro. Callers therefore
need to check for errors using the IS_ERR() macro. This change allows
drivers to handle contiguous DMA allocation failures gracefully.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/drm_fb_cma_helper.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c index d6c80a34b830..fd9d0af4d536 100644 --- a/drivers/gpu/drm/drm_fb_cma_helper.c +++ b/drivers/gpu/drm/drm_fb_cma_helper.c @@ -220,7 +220,7 @@ static int drm_fbdev_cma_create(struct drm_fb_helper *helper, size = mode_cmd.pitches[0] * mode_cmd.height; obj = drm_gem_cma_create(dev, size); - if (!obj) + if (IS_ERR(obj)) return -ENOMEM; fbi = framebuffer_alloc(0, dev->dev); |
