Re: [PATCH][next] Input: Fix fall-through warning for Clang

From: Joe Perches
Date: Mon Jun 07 2021 - 18:02:46 EST


On Mon, 2021-06-07 at 16:48 -0500, Gustavo A. R. Silva wrote:
> In preparation to enable -Wimplicit-fallthrough for Clang, fix a
> warning by explicitly adding a fallthrough; statement.
[]
> diff --git a/drivers/input/joystick/sidewinder.c b/drivers/input/joystick/sidewinder.c
[]
> @@ -660,6 +660,7 @@ static int sw_connect(struct gameport *gameport, struct gameport_driver *drv)
>   fallthrough;
>   case 45: /* Ambiguous packet length */
>   if (j <= 40) { /* ID length less or eq 40 -> FSP */
> + fallthrough;
>   case 43:
>   sw->type = SW_ID_FSP;
>   break;

Yuck. Super ugly. There's no need to play games with indentation.

Perhaps the simpler:

case 43:
sw->type = SW_ID_FSP;
break;
case 45: /* Ambiguous packet length */
if (j <= 40) { /* ID length less or eq 40 -> FSP */
sw->type = SW_ID_FSP;
break;
}
sw->number++;
fallthrough;