From: Jakob Bornecrantz Date: Thu, 16 Aug 2012 08:29:03 +0000 (+0000) Subject: drm: Check for invalid cursor flags X-Git-Tag: firefly_0821_release~3680^2~2143^2~5 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7c4eaca4162d0b5ad4fb39f974d7ffd71b9daa09;p=firefly-linux-kernel-4.4.55.git drm: Check for invalid cursor flags Signed-off-by: Jakob Bornecrantz Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 08a7aa722d6b..6fbfc244748f 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -1981,7 +1981,7 @@ int drm_mode_cursor_ioctl(struct drm_device *dev, if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; - if (!req->flags) + if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags)) return -EINVAL; mutex_lock(&dev->mode_config.mutex); diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h index 5581980b14f6..3d6301b6ec16 100644 --- a/include/drm/drm_mode.h +++ b/include/drm/drm_mode.h @@ -359,8 +359,9 @@ struct drm_mode_mode_cmd { struct drm_mode_modeinfo mode; }; -#define DRM_MODE_CURSOR_BO (1<<0) -#define DRM_MODE_CURSOR_MOVE (1<<1) +#define DRM_MODE_CURSOR_BO 0x01 +#define DRM_MODE_CURSOR_MOVE 0x02 +#define DRM_MODE_CURSOR_FLAGS 0x03 /* * depending on the value in flags different members are used.