Messages in this thread | | | Date | Mon, 29 Jul 2019 09:34:55 -0700 | From | Kees Cook <> | Subject | Re: [PATCH] i2c: s3c2410: Mark expected switch fall-through |
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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 <sfr@canb.auug.org.au> > Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
-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
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