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>
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@ -220,7 +220,7 @@ static int drm_fbdev_cma_create(struct drm_fb_helper *helper,
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size = mode_cmd.pitches[0] * mode_cmd.height;
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obj = drm_gem_cma_create(dev, size);
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if (!obj)
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if (IS_ERR(obj))
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return -ENOMEM;
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fbi = framebuffer_alloc(0, dev->dev);
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