Re: [PATCH v3] Compiler Attributes: remove CONFIG_ENABLE_MUST_CHECK

[Guenter Roeck <linux@roeck-us.net>]

On 12/12/20 9:04 PM, Miguel Ojeda wrote:
> On Sat, Dec 12, 2020 at 5:18 PM Guenter Roeck <linux@roeck-us.net> wrote:
>>
>> This patch results in:
>>
>> arch/sh/kernel/cpu/sh4a/smp-shx3.c: In function 'shx3_prepare_cpus':
>> arch/sh/kernel/cpu/sh4a/smp-shx3.c:76:3: error: ignoring return value of 'request_irq' declared with attribute 'warn_unused_result'
>>
>> when building sh:defconfig. Checking for calls to request_irq()
>> suggests that there will be other similar errors in various builds.
>> Reverting the patch fixes the problem.
> 
> Which ones? From a quick grep and some filtering I could only find one
> file with wrong usage apart from this one:
> 
>     drivers/net/ethernet/lantiq_etop.c:
> request_irq(irq, ltq_etop_dma_irq, 0, "etop_tx", priv);
>     drivers/net/ethernet/lantiq_etop.c:
> request_irq(irq, ltq_etop_dma_irq, 0, "etop_rx", priv);
> 
> Of course, this does not cover other functions, but it means there
> aren't many issues and/or people building the code if nobody complains
> within a few weeks. So I think we can fix them as they come.
> 

Witz komm raus, Du bist umzingelt.

The key here is "if nobody complains". I would argue that it is _your_
responsibility to do those builds, and not the reponsibility of others
to do it for you.

But, sure, your call. Please feel free to ignore my report.

Guenter