It doesn't even show up in any header files and only used iternally. Originally it was (ab)used to restore the fbcon on lastclose, but that died with
commit e8e7a2b8ccfdae0d4cb6bd25824bbedcd42da316 Author: Dave Airlie airlied@redhat.com Date: Thu Apr 21 22:18:32 2011 +0100
drm/i915: restore only the mode of this driver on lastclose (v2)
Signed-off-by: Daniel Vetter daniel.vetter@ffwll.ch --- drivers/gpu/drm/drm_fb_helper.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 6d689f2..ce816a5 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -284,7 +284,7 @@ static bool drm_fb_helper_force_kernel_mode(void) return error; }
-int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, +static int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, void *panic_str) { /* @@ -297,7 +297,6 @@ int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, pr_err("panic occurred, switching back to text console\n"); return drm_fb_helper_force_kernel_mode(); } -EXPORT_SYMBOL(drm_fb_helper_panic);
static struct notifier_block paniced = { .notifier_call = drm_fb_helper_panic,