This patch adds NULL pointer checking of extcon device to 'extcon_unregister
_interest' which unregisters extcon notifier block.
Signed-off-by: Jonghwa Lee <jonghwa3....@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo....@samsung.com>
---
drivers/extcon/extcon-class.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c
index 8c69803..23f11ea 100644
--- a/drivers/extcon/extcon-class.c
+++ b/drivers/extcon/extcon-class.c
@@ -491,7 +491,7 @@ EXPORT_SYMBOL_GPL(extcon_register_interest);
*/
int extcon_unregister_interest(struct extcon_specific_cable_nb *obj)
{
- if (!obj)
+ if (!obj || !obj->edev)
return -EINVAL;
return raw_notifier_chain_unregister(&obj->edev->nh, &obj->internal_nb);
--
1.7.9.5
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