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Diffstat (limited to 'drivers/gpu/drm/drm_internal.h')
-rw-r--r--drivers/gpu/drm/drm_internal.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h
index a71cf4b839f2..d6dc75534304 100644
--- a/drivers/gpu/drm/drm_internal.h
+++ b/drivers/gpu/drm/drm_internal.h
@@ -25,6 +25,7 @@
extern unsigned int drm_timestamp_monotonic;
/* drm_fops.c */
+extern struct mutex drm_global_mutex;
int drm_lastclose(struct drm_device *dev);
/* drm_pci.c */