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author | Dave Airlie <airlied@redhat.com> | 2017-08-15 16:16:58 +1000 |
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committer | Dave Airlie <airlied@redhat.com> | 2017-08-15 16:16:58 +1000 |
commit | 0c697fafc66830ca7d5dc19123a1d0641deaa1f6 (patch) | |
tree | c56336719ca8de16f78ada78e606dffa471e47d5 /drivers/gpu/drm/exynos/exynos_drm_fb.c | |
parent | 09ef2378dc42339f3871584dc26d27da220277cb (diff) | |
parent | ef954844c7ace62f773f4f23e28d2d915adc419f (diff) | |
download | linux-0c697fafc66830ca7d5dc19123a1d0641deaa1f6.tar.bz2 |
Backmerge tag 'v4.13-rc5' into drm-next
Linux 4.13-rc5
There's a really nasty nouveau collision, hopefully someone can take a look
once I pushed this out.
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_fb.c')
-rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_fb.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.c b/drivers/gpu/drm/exynos/exynos_drm_fb.c index ed1a648d518c..6592f50d460a 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fb.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fb.c @@ -145,13 +145,19 @@ static struct drm_framebuffer * exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd) { + const struct drm_format_info *info = drm_get_format_info(dev, mode_cmd); struct exynos_drm_gem *exynos_gem[MAX_FB_BUFFER]; struct drm_gem_object *obj; struct drm_framebuffer *fb; int i; int ret; - for (i = 0; i < drm_format_num_planes(mode_cmd->pixel_format); i++) { + for (i = 0; i < info->num_planes; i++) { + unsigned int height = (i == 0) ? mode_cmd->height : + DIV_ROUND_UP(mode_cmd->height, info->vsub); + unsigned long size = height * mode_cmd->pitches[i] + + mode_cmd->offsets[i]; + obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[i]); if (!obj) { DRM_ERROR("failed to lookup gem object\n"); @@ -160,6 +166,12 @@ exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, } exynos_gem[i] = to_exynos_gem(obj); + + if (size > exynos_gem[i]->size) { + i++; + ret = -EINVAL; + goto err; + } } fb = exynos_drm_framebuffer_init(dev, mode_cmd, exynos_gem, i); |