# \[PATCH\] video: Fix return value of fb\_notifier\_call\_chain

- From: Joonyoung Shim \<hidden\>
- Date: 2011-11-21 06:55:28 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2011/11/3789465
- Thread: https://ratatoskr.run/linux-fbdev/2011/11/3789465/t.md

```text
The return value of blocking_notifier_call_chain isn't errno value, it
is just notify return value. The ret of fb_notifier_call_chain should is
restored to error value from notify return value using
notifier_to_errno().

Signed-off-by: Joonyoung Shim <redacted>
---
 drivers/video/fb_notify.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/video/fb_notify.c b/drivers/video/fb_notify.c
index 74c2da5..49a64a3 100644
--- a/drivers/video/fb_notify.c
+++ b/drivers/video/fb_notify.c
@@ -42,6 +42,8 @@ EXPORT_SYMBOL(fb_unregister_client);
  */
 int fb_notifier_call_chain(unsigned long val, void *v)
 {
-	return blocking_notifier_call_chain(&fb_notifier_list, val, v);
+	int ret = blocking_notifier_call_chain(&fb_notifier_list, val, v);
+
+	return notifier_to_errno(ret);
 }
 EXPORT_SYMBOL_GPL(fb_notifier_call_chain);
-- 
1.7.5.4

```