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>
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
index 2ca8df8..41dfaae 100644
--- a/drivers/gpu/drm/drm_fops.c
+++ b/drivers/gpu/drm/drm_fops.c
@@ -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);