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Date: Sat, 20 Oct 2012 12:32:47 +0200 From: Thierry Reding <thierry.reding@...onic-design.de> To: David Airlie <airlied@...ux.ie> Cc: Thierry Reding <thierry.reding@...onic-design.de>, Laurent Pinchart <laurent.pinchart@...asonboard.com>, Lars-Peter Clausen <lars@...afoo.de>, Sascha Hauer <s.hauer@...gutronix.de>, dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org Subject: [PATCH 2/2] 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@...onic-design.de> --- drivers/gpu/drm/drm_fb_cma_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c index d6c80a3..fd9d0af 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); -- 1.7.12.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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