From c579792562837ec2e64b006cfc9423e4177a4d26 Mon Sep 17 00:00:00 2001 From: Tom Rix Date: Sat, 8 Jan 2022 06:33:19 -0800 Subject: [PATCH] can: janz-ican3: initialize dlc variable Clang static analysis reports this problem janz-ican3.c:1311:2: warning: Undefined or garbage value returned to caller return dlc; ^~~~~~~~~~ dlc is only set with this conditional if (!(cf->can_id & CAN_RTR_FLAG)) dlc = cf->len; But is always returned. So initialize dlc to 0. Fixes: cc4b08c31b5c ("can: do not increase tx_bytes statistics for RTR frames") Link: https://lore.kernel.org/all/20220108143319.3986923-1-trix@redhat.com Signed-off-by: Tom Rix Acked-by: Vincent Mailhol Signed-off-by: Marc Kleine-Budde --- drivers/net/can/janz-ican3.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/can/janz-ican3.c b/drivers/net/can/janz-ican3.c index 5b677af..808c105 100644 --- a/drivers/net/can/janz-ican3.c +++ b/drivers/net/can/janz-ican3.c @@ -1285,7 +1285,7 @@ static unsigned int ican3_get_echo_skb(struct ican3_dev *mod) { struct sk_buff *skb = skb_dequeue(&mod->echoq); struct can_frame *cf; - u8 dlc; + u8 dlc = 0; /* this should never trigger unless there is a driver bug */ if (!skb) { -- 2.7.4