linux-kernel - Re: [PATCH] sata_rcar: fix error return code in sata_rcar

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Date:   Fri, 30 Jun 2017 14:46:33 -0500
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     Tejun Heo <tj@...nel.org>
Cc:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
        linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sata_rcar: fix error return code in sata_rcar_probe()


Quoting "Gustavo A. R. Silva" <garsilva@...eddedor.com>:

> Hi Tejun, Sergei,
>
> Quoting Tejun Heo <tj@...nel.org>:
>
>> On Fri, Jun 30, 2017 at 12:42:38PM +0300, Sergei Shtylyov wrote:
>>> Hello!
>>>
>>> On 6/30/2017 8:22 AM, Gustavo A. R. Silva wrote:
>>>
>>>> Print error message and propagate the return value of
>>>> platform_get_irq on failure.
>>>
>>>   You should have probably mentioned that this function no longer returns 0
>>> on error.
>>
>> Yeah, the patches looks good to me but I'd really appreciate more
>> context in the changelogs.  Gustavo, can you please respin the
>> patches?
>>
>
> Absolutely.
>
> What do you think about the following changelog:
>
> platform_get_irq() returns an error code, but the sata_rcar driver
> ignores it and always returns -EINVAL. This is not correct, and
> prevents -EPROBE_DEFER from being propagated properly.
>
> Print error message and propagate the return value of platform_get_irq
> on failure. Also, with this change function sata_rcar_probe() no longer
> returns 0 on error.
>

Errata, this would be final the chagelog:

platform_get_irq() returns an error code, but the sata_rcar driver
ignores it and always returns -EINVAL. This is not correct, and
prevents -EPROBE_DEFER from being propagated properly. Also,
notice that platform_get_irq() no longer returns 0 on error.

Print error message and propagate the return value of platform_get_irq
on failure.

Thanks
--
Gustavo A. R. Silva