[PATCH v1 1/4] usb: typec: ucsi: Fix null deref in trace

[Jameson Thies]

From: Abhishek Pandit-Subedi <abhishekpandit@xxxxxxxxxxxx>

ucsi_register_altmode checks IS_ERR on returned pointer and treats
NULL as valid. This results in a null deref when
trace_ucsi_register_altmode is called.

Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@xxxxxxxxxxxx>
---
 drivers/usb/typec/ucsi/ucsi.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h
index c4d103db9d0f8..c663dce0659ee 100644
--- a/drivers/usb/typec/ucsi/ucsi.h
+++ b/drivers/usb/typec/ucsi/ucsi.h
@@ -496,7 +496,7 @@ ucsi_register_displayport(struct ucsi_connector *con,
 			  bool override, int offset,
 			  struct typec_altmode_desc *desc)
 {
-	return NULL;
+	return ERR_PTR(-EOPNOTSUPP);
 }
 
 static inline void
-- 
2.44.0.769.g3c40516874-goog