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drm: Check for invalid cursor flags 

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jakob Bornecrantz 2012-08-16 08:29:03 +00:00 committed by Dave Airlie
parent 22f5d115a2
commit 7c4eaca416
2 changed files with 4 additions and 3 deletions
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2
drivers/gpu/drm/drm_crtc.c
View File

@ -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);

5
include/drm/drm_mode.h
View File

@ -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.