From 1216f732379151cd581444e385a8266d0b54549d Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Thu, 15 Aug 2013 00:02:36 +0200 Subject: [PATCH] drm/gem: WARN about unbalanced handle refcounts Trying to drop a reference we don't have is a pretty serious bug. Trying to paper over it is an even worse offense. So scream into dmesg with a big WARN in case that ever happens. Signed-off-by: Daniel Vetter Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_gem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c index 44978bcf8125..dcbd2f559e39 100644 --- a/drivers/gpu/drm/drm_gem.c +++ b/drivers/gpu/drm/drm_gem.c @@ -238,7 +238,7 @@ static void drm_gem_object_handle_free(struct drm_gem_object *obj) void drm_gem_object_handle_unreference_unlocked(struct drm_gem_object *obj) { - if (atomic_read(&obj->handle_count) == 0) + if (WARN_ON(atomic_read(&obj->handle_count) == 0)) return; /*