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authorDaniel Vetter <daniel.vetter@ffwll.ch>2016-08-08 18:24:53 +0200
committerSean Paul <seanpaul@chromium.org>2016-08-08 14:34:05 -0400
commitcfc5adea1955ee8ddb62cc0d20ee454472033b6a (patch)
treea8d6a5365be28763bef6ad3b40adf3cc4ab8ef49 /drivers/gpu/drm/drm_irq.c
parentac08500c1bcb620810838c735143a00e5acf5b5f (diff)
drm: Make sure drm_vblank_no_hw_counter isn't abused
Shouldn't be possible since everyone kzallocs this, but better safe than sorry. Random drive-by-idea really. Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Reviewed-by: Rodrigo Vivi <rdorigo.vivi@intel.com> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/1470673493-14304-1-git-send-email-daniel.vetter@ffwll.ch
Diffstat (limited to 'drivers/gpu/drm/drm_irq.c')
-rw-r--r--drivers/gpu/drm/drm_irq.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 97c70642dbe1..c0c3f2006203 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -1826,6 +1826,7 @@ EXPORT_SYMBOL(drm_crtc_handle_vblank);
*/
u32 drm_vblank_no_hw_counter(struct drm_device *dev, unsigned int pipe)
{
+ WARN_ON_ONCE(dev->max_vblank_count != 0);
return 0;
}
EXPORT_SYMBOL(drm_vblank_no_hw_counter);