[PATCH 2/2] can: bcm: check the result of can_send() in bcm_can_tx()

From: Ziyang Xuan
Date: Wed Sep 07 2022 - 23:04:58 EST


If can_send() fail, it should not update statistics in bcm_can_tx().
Add the result check for can_send() in bcm_can_tx().

Fixes: ffd980f976e7 ("[CAN]: Add broadcast manager (bcm) protocol")
Signed-off-by: Ziyang Xuan <william.xuanziyang@xxxxxxxxxx>
---
net/can/bcm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/can/bcm.c b/net/can/bcm.c
index e2783156bfd1..8f5d704a409f 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -298,7 +298,8 @@ static void bcm_can_tx(struct bcm_op *op)
/* send with loopback */
skb->dev = dev;
can_skb_set_owner(skb, op->sk);
- can_send(skb, 1);
+ if (can_send(skb, 1))
+ goto out;

/* update statistics */
op->currframe++;
--
2.25.1