[PATCH] Input: mark expected switch fall-through

[PATCH] Input: mark expected switch fall-through

[Gustavo A. R. Silva]

In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warning:

drivers/input/joystick/db9.c: In function ‘db9_saturn_read_packet’:
drivers/input/joystick/db9.c:256:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (tmp == 0xff) {
      ^
drivers/input/joystick/db9.c:263:2: note: here
  default:
  ^~~~~~~

Notice that, in this particular case, the code comment is modified
in accordance with what GCC is expecting to find.

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
 drivers/input/joystick/db9.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/joystick/db9.c b/drivers/input/joystick/db9.c
index 804b1b80a8be..5a52b65bef9a 100644
--- a/drivers/input/joystick/db9.c
+++ b/drivers/input/joystick/db9.c
@@ -259,7 +259,7 @@ static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char
 			db9_saturn_write_sub(port, type, 3, powered, 0);
 			return data[0] = 0xe3;
 		}
-		/* else: fall through */
+		/* fall through */
 	default:
 		return data[0];
 	}
-- 
2.20.1

Re: [PATCH] Input: mark expected switch fall-through

[Dmitry Torokhov]

On Mon, Feb 11, 2019 at 04:25:55PM -0600, Gustavo A. R. Silva wrote:
> In preparation to enabling -Wimplicit-fallthrough, mark switch
> cases where we are expecting to fall through.
> 
> This patch fixes the following warning:
> 
> drivers/input/joystick/db9.c: In function ‘db9_saturn_read_packet’:
> drivers/input/joystick/db9.c:256:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
>    if (tmp == 0xff) {
>       ^
> drivers/input/joystick/db9.c:263:2: note: here
>   default:
>   ^~~~~~~
> 
> Notice that, in this particular case, the code comment is modified
> in accordance with what GCC is expecting to find.
> 
> This patch is part of the ongoing efforts to enable
> -Wimplicit-fallthrough.
> 
> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>

Applied, thank you.

> ---
>  drivers/input/joystick/db9.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/input/joystick/db9.c b/drivers/input/joystick/db9.c
> index 804b1b80a8be..5a52b65bef9a 100644
> --- a/drivers/input/joystick/db9.c
> +++ b/drivers/input/joystick/db9.c
> @@ -259,7 +259,7 @@ static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char
>  			db9_saturn_write_sub(port, type, 3, powered, 0);
>  			return data[0] = 0xe3;
>  		}
> -		/* else: fall through */
> +		/* fall through */
>  	default:
>  		return data[0];
>  	}
> -- 
> 2.20.1
> 

-- 
Dmitry

Re: [PATCH] Input: mark expected switch fall-through

[Gustavo A. R. Silva]

On 2/11/19 4:48 PM, Dmitry Torokhov wrote:
> On Mon, Feb 11, 2019 at 04:25:55PM -0600, Gustavo A. R. Silva wrote:
>> In preparation to enabling -Wimplicit-fallthrough, mark switch
>> cases where we are expecting to fall through.
>>
>> This patch fixes the following warning:
>>
>> drivers/input/joystick/db9.c: In function ‘db9_saturn_read_packet’:
>> drivers/input/joystick/db9.c:256:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
>>    if (tmp == 0xff) {
>>       ^
>> drivers/input/joystick/db9.c:263:2: note: here
>>   default:
>>   ^~~~~~~
>>
>> Notice that, in this particular case, the code comment is modified
>> in accordance with what GCC is expecting to find.
>>
>> This patch is part of the ongoing efforts to enable
>> -Wimplicit-fallthrough.
>>
>> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
> 
> Applied, thank you.
> 

Thanks, Dmitry.

--
Gustavo