can: gs_usb: gs_usb_receive_bulk_callback(): count RX overflow errors also in case...

[ Upstream commit 6c8bc15f02b85bc8f47074110d8fd8caf7a1e42d ]

In case of an RX overflow error from the CAN controller and an OOM
where no skb can be allocated, the error counters are not incremented.

Fix this by first incrementing the error counters and then allocate
the skb.

Fixes: d08e973a77d1 ("can: gs_usb: Added support for the GS_USB CAN devices")
Link: https://lore.kernel.org/all/20230718-gs_usb-cleanups-v1-7-c3b9154ec605@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c
index 5858cbafbc9659c50829b94e63af64d735b8602c..264a0f764e01135011f0b801c5461a12a705e31e 100644 (file)
--- a/drivers/net/can/usb/gs_usb.c
+++ b/drivers/net/can/usb/gs_usb.c
@@ -626,6 +626,9 @@ static void gs_usb_receive_bulk_callback(struct urb *urb)
        }
 
        if (hf->flags & GS_CAN_FLAG_OVERFLOW) {
+               stats->rx_over_errors++;
+               stats->rx_errors++;
+
                skb = alloc_can_err_skb(netdev, &cf);
                if (!skb)
                        goto resubmit_urb;
@@ -633,8 +636,6 @@ static void gs_usb_receive_bulk_callback(struct urb *urb)
                cf->can_id |= CAN_ERR_CRTL;
                cf->len = CAN_ERR_DLC;
                cf->data[1] = CAN_ERR_CRTL_RX_OVERFLOW;
-               stats->rx_over_errors++;
-               stats->rx_errors++;
                netif_rx(skb);
        }