diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2013-04-22 01:38:46 +0200 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2013-04-22 19:48:21 +1000 |
| commit | 909d9cda2edfc61b8ec82e248eee3545b592e20d (patch) | |
| tree | 253a10c2ee12c32820bddb29290757170aeee431 /drivers/gpu/drm/drm_crtc.c | |
| parent | 64c026e28d68bf64b0a3c85e31d74c42a7cdecd3 (diff) | |
| download | talos-obmc-linux-909d9cda2edfc61b8ec82e248eee3545b592e20d.tar.gz talos-obmc-linux-909d9cda2edfc61b8ec82e248eee3545b592e20d.zip | |
drm: Don't allow page flip to change pixel format
A page flip is not a mode set, changing the frame buffer pixel format
doesn't make sense and isn't handled by most drivers anyway. Disallow
it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/drm_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 957fb70e8d0e..c577baec416f 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -3638,6 +3638,12 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, goto out; } + if (crtc->fb->pixel_format != fb->pixel_format) { + DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n"); + ret = -EINVAL; + goto out; + } + if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { ret = -ENOMEM; spin_lock_irqsave(&dev->event_lock, flags); |
