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SubjectRe: [PATCH 072/141] can: peak_usb: Fix fall-through warnings for Clang
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On 11/20/20 7:34 PM, Gustavo A. R. Silva wrote:
> In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
> by explicitly adding a break statement instead of letting the code fall
> through to the next case.
>
> Link: https://github.com/KSPP/linux/issues/115
> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
> ---
> drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
> index c2764799f9ef..fd65a155be3b 100644
> --- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c
> +++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
> @@ -299,6 +299,8 @@ static void peak_usb_write_bulk_callback(struct urb *urb)
> if (net_ratelimit())
> netdev_err(netdev, "Tx urb aborted (%d)\n",
> urb->status);
> + break;
> +
> case -EPROTO:
> case -ENOENT:
> case -ECONNRESET:
>

What about moving the default to the end if the case, which is more common anyways:

diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
index 204ccb27d6d9..e8977dd10902 100644
--- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
@@ -295,16 +295,16 @@ static void peak_usb_write_bulk_callback(struct urb *urb)
netif_trans_update(netdev);
break;

- default:
- if (net_ratelimit())
- netdev_err(netdev, "Tx urb aborted (%d)\n",
- urb->status);
case -EPROTO:
case -ENOENT:
case -ECONNRESET:
case -ESHUTDOWN:
-
break;
+
+ default:
+ if (net_ratelimit())
+ netdev_err(netdev, "Tx urb aborted (%d)\n",
+ urb->status);
}

/* should always release echo skb and corresponding context */

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

Marc

--
Pengutronix e.K. | Marc Kleine-Budde |
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Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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