Adding check to typec_altmode_get_partner() to prevent
potential NULL pointer dereference.
Reported-by: Vladimir Yerilov <openmindead@xxxxxxxxx>
Fixes: ad74b8649bea ("usb: typec: ucsi: Preliminary support for alternate modes")
Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
---
drivers/usb/typec/bus.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/typec/bus.c b/drivers/usb/typec/bus.c
index eda4a45f0d0a..70072e3705ca 100644
--- a/drivers/usb/typec/bus.c
+++ b/drivers/usb/typec/bus.c
@@ -192,7 +192,7 @@ EXPORT_SYMBOL_GPL(typec_altmode_vdm);
const struct typec_altmode *
typec_altmode_get_partner(struct typec_altmode *adev)
{
- return &to_altmode(adev)->partner->adev;
+ return adev ? &to_altmode(adev)->partner->adev : NULL;
}
EXPORT_SYMBOL_GPL(typec_altmode_get_partner);
--
2.20.1
