diff options
author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2012-03-13 12:35:40 +0200 |
---|---|---|
committer | Dave Airlie <airlied@redhat.com> | 2012-03-15 09:49:18 +0000 |
commit | e36fae3889db38f6cacabea3998b9a09320f2ad2 (patch) | |
tree | 8f3666f361816d652b172fd9f156ec790ed23d9f /drivers | |
parent | 2fcfc75b112e897609faed30bcf80565fb005087 (diff) | |
download | linux-e36fae3889db38f6cacabea3998b9a09320f2ad2.tar.bz2 |
drm: Warn if mode to umode conversion overflows the destination types
When converting from a drm_display_mode to drm_mode_modeinfo, print a
warning if the the timings values don't fit into the __u16 datatype.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index bbcecdb4e0ad..d11763f7211a 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -1002,6 +1002,13 @@ EXPORT_SYMBOL(drm_mode_config_cleanup); void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, struct drm_display_mode *in) { + WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX || + in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX || + in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX || + in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX || + in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX, + "timing values too large for mode info\n"); + out->clock = in->clock; out->hdisplay = in->hdisplay; out->hsync_start = in->hsync_start; |