[PATCH 1/2] drm: Warn when leaking flip events on close

ville.syrjala at linux.intel.com ville.syrjala at linux.intel.com
Wed Aug 6 04:02:50 PDT 2014

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Warn when there are events on the file_priv->event_list just before
file_priv gets freed. This can occur if the driver doesn't clean up
pending page flip events in ->preclose().

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
 drivers/gpu/drm/drm_fops.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
index 8f91062..0fa4dad 100644
--- a/drivers/gpu/drm/drm_fops.c
+++ b/drivers/gpu/drm/drm_fops.c
@@ -529,6 +529,8 @@ int drm_release(struct inode *inode, struct file *filp)
 	if (drm_core_check_feature(dev, DRIVER_PRIME))
+	WARN_ON(!list_empty(&file_priv->event_list));

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