Mark switch cases where we are expecting to fall through.
This patch fixes the following warning:
drivers/i2c/busses/i2c-s3c2410.c: In function 'i2c_s3c_irq_nextbyte':
drivers/i2c/busses/i2c-s3c2410.c:431:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
if (i2c->state == STATE_READ)
^
drivers/i2c/busses/i2c-s3c2410.c:439:2: note: here
case STATE_WRITE:
^~~~
Notice that, in this particular case, the code comment is
modified in accordance with what GCC is expecting to find.
Reported-by: Stephen Rothwell <[email protected]>
Signed-off-by: Gustavo A. R. Silva <[email protected]>
---
drivers/i2c/busses/i2c-s3c2410.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index d97fb857b0ea..c98ef4c4a0c9 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -435,6 +435,7 @@ static int i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
* fall through to the write state, as we will need to
* send a byte as well
*/
+ /* Fall through */
case STATE_WRITE:
/*
--
2.22.0
On Sun, Jul 28, 2019 at 06:51:38PM -0500, Gustavo A. R. Silva wrote:
> Mark switch cases where we are expecting to fall through.
>
> This patch fixes the following warning:
>
> drivers/i2c/busses/i2c-s3c2410.c: In function 'i2c_s3c_irq_nextbyte':
> drivers/i2c/busses/i2c-s3c2410.c:431:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
> if (i2c->state == STATE_READ)
> ^
> drivers/i2c/busses/i2c-s3c2410.c:439:2: note: here
> case STATE_WRITE:
> ^~~~
>
> Notice that, in this particular case, the code comment is
> modified in accordance with what GCC is expecting to find.
>
> Reported-by: Stephen Rothwell <[email protected]>
> Signed-off-by: Gustavo A. R. Silva <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
-Kees
> ---
> drivers/i2c/busses/i2c-s3c2410.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
> index d97fb857b0ea..c98ef4c4a0c9 100644
> --- a/drivers/i2c/busses/i2c-s3c2410.c
> +++ b/drivers/i2c/busses/i2c-s3c2410.c
> @@ -435,6 +435,7 @@ static int i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
> * fall through to the write state, as we will need to
> * send a byte as well
> */
> + /* Fall through */
>
> case STATE_WRITE:
> /*
> --
> 2.22.0
>
--
Kees Cook
On Sun, Jul 28, 2019 at 06:51:38PM -0500, Gustavo A. R. Silva wrote:
> Mark switch cases where we are expecting to fall through.
>
> This patch fixes the following warning:
>
> drivers/i2c/busses/i2c-s3c2410.c: In function 'i2c_s3c_irq_nextbyte':
> drivers/i2c/busses/i2c-s3c2410.c:431:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
> if (i2c->state == STATE_READ)
> ^
> drivers/i2c/busses/i2c-s3c2410.c:439:2: note: here
> case STATE_WRITE:
> ^~~~
>
> Notice that, in this particular case, the code comment is
> modified in accordance with what GCC is expecting to find.
>
> Reported-by: Stephen Rothwell <[email protected]>
> Signed-off-by: Gustavo A. R. Silva <[email protected]>
Applied to for-current, thanks!