In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
by explicitly adding a goto 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 <[email protected]>
---
JFYI: We had thousands of these sorts of warnings and now we are down
to just 25 in linux-next. This is one of those last remaining
warnings.
sound/soc/ti/davinci-mcasp.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/sound/soc/ti/davinci-mcasp.c b/sound/soc/ti/davinci-mcasp.c
index b94220306d1a..587967720135 100644
--- a/sound/soc/ti/davinci-mcasp.c
+++ b/sound/soc/ti/davinci-mcasp.c
@@ -2317,6 +2317,7 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
break;
default:
dev_err(&pdev->dev, "No DMA controller found (%d)\n", ret);
+ goto err;
case -EPROBE_DEFER:
goto err;
}
--
2.27.0
On Fri, May 28, 2021 at 03:20:47PM -0500, Gustavo A. R. Silva wrote:
> In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
> by explicitly adding a goto 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 <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
--
Kees Cook
On 28/05/2021 23:20, Gustavo A. R. Silva wrote:
> In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
> by explicitly adding a goto 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 <[email protected]>
> ---
> JFYI: We had thousands of these sorts of warnings and now we are down
> to just 25 in linux-next. This is one of those last remaining
> warnings.
>
> sound/soc/ti/davinci-mcasp.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/sound/soc/ti/davinci-mcasp.c b/sound/soc/ti/davinci-mcasp.c
> index b94220306d1a..587967720135 100644
> --- a/sound/soc/ti/davinci-mcasp.c
> +++ b/sound/soc/ti/davinci-mcasp.c
> @@ -2317,6 +2317,7 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
> break;
> default:
> dev_err(&pdev->dev, "No DMA controller found (%d)\n", ret);
> + goto err;
Would:
fallthrough;
be enough to silence the warning? If so, then I would prefer this version.
> case -EPROBE_DEFER:
> goto err;
> }
>
--
Péter
On 6/4/21 02:14, Péter Ujfalusi wrote:
>
>
> On 28/05/2021 23:20, Gustavo A. R. Silva wrote:
>> In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
>> by explicitly adding a goto 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 <[email protected]>
>> ---
>> JFYI: We had thousands of these sorts of warnings and now we are down
>> to just 25 in linux-next. This is one of those last remaining
>> warnings.
>>
>> sound/soc/ti/davinci-mcasp.c | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/sound/soc/ti/davinci-mcasp.c b/sound/soc/ti/davinci-mcasp.c
>> index b94220306d1a..587967720135 100644
>> --- a/sound/soc/ti/davinci-mcasp.c
>> +++ b/sound/soc/ti/davinci-mcasp.c
>> @@ -2317,6 +2317,7 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
>> break;
>> default:
>> dev_err(&pdev->dev, "No DMA controller found (%d)\n", ret);
>> + goto err;
>
> Would:
> fallthrough;
>
> be enough to silence the warning? If so, then I would prefer this version.
Yep.:) Done:
https://lore.kernel.org/linux-hardening/20210604072714.GA244640@embeddedor/
Thanks
--
Gustavo