diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index 966c3eae437e..ce1b73214f26 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -527,7 +527,7 @@ static ssize_t tc_aux_transfer(struct drm_dp_aux *aux,
 	 * address-only transfer
 	 */
 	if (size)
-		size = FIELD_GET(AUX_BYTES, auxstatus);
+		size = min_t(size_t, size, FIELD_GET(AUX_BYTES, auxstatus));
 	msg->reply = FIELD_GET(AUX_STATUS, auxstatus);
 
 	switch (request) {