From d6979950ee911194dab9ae7513fe36dc3730f7a9 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Tue, 11 Jun 2019 11:10:25 +0300 Subject: [PATCH] usb: typec: Make sure an alt mode exist before getting its partner Interim. For testing only! Adding check to typec_altmode_get_partner() to prevent potential NULL pointer dereference. Signed-off-by: Heikki Krogerus --- 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 76299b6ff06d..74cb3c2ecb34 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