drm: export drm_global_mutex for drivers to use



Nouveau needs to be able to drop the mutex before sleeping to prevent a
deadlock from occuring.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

parent ee508b82

drivers/gpu/drm/drm_fops.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -41,6 +41,7 @@

		/* from BKL pushdown: note that nothing else serializes idr_find() */
		DEFINE_MUTEX(drm_global_mutex);
		EXPORT_SYMBOL(drm_global_mutex);

		static int drm_open_helper(struct inode inode, struct file filp,
		struct drm_device * dev);