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drm/msm: bit of fb error checking

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It's a problem that can't happen yet, since we don't support any
multi-planar formats yet.  But let's avoid nasty surprises when the
time comes.

Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Rob Clark 2014-11-08 09:20:28 -05:00
parent 2638d90abb
commit 10291bff0a
1 changed files with 6 additions and 1 deletions
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7
drivers/gpu/drm/msm/msm_fb.c
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@ -24,7 +24,7 @@
struct msm_framebuffer {
struct drm_framebuffer base;
const struct msm_format *format;
struct drm_gem_object *planes[2];
struct drm_gem_object *planes[3];
};
#define to_msm_framebuffer(x) container_of(x, struct msm_framebuffer, base)
@ -202,6 +202,11 @@ struct drm_framebuffer *msm_framebuffer_init(struct drm_device *dev,
msm_fb->format = format;
if (n > ARRAY_SIZE(msm_fb->planes)) {
ret = -EINVAL;
goto fail;
}
for (i = 0; i < n; i++) {
unsigned int width = mode_cmd->width / (i ? hsub : 1);
unsigned int height = mode_cmd->height / (i ? vsub : 1);