linux-kernel - Re: [PATCH] pata_ipx4xx_cf: Fix unsigned comparison with less than zero

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Date:   Sat, 10 Apr 2021 11:46:45 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...il.com>
To:     angkery <angkery@....com>
Cc:     axboe@...nel.dk, linux-ide@...r.kernel.org,
        linux-kernel@...r.kernel.org, Junlin Yang <yangjunlin@...ong.com>
Subject: Re: [PATCH] pata_ipx4xx_cf: Fix unsigned comparison with less than
 zero

On 10.04.2021 2:38, angkery wrote:
> On Fri, 9 Apr 2021 20:02:56 +0300
> Sergei Shtylyov <sergei.shtylyov@...il.com> wrote:
> 
>> On 4/9/21 7:49 PM, Sergei Shtylyov wrote:
>>
>>>> From: Junlin Yang <yangjunlin@...ong.com>
>>>>
>>>> The return from the call to platform_get_irq() is int, it can be
>>>> a negative error code, however this is being assigned to an
>>>> unsigned int variable 'irq', so making 'irq' an int, and change
>>>> the position to keep the code format.
>>>>
>>>> ./drivers/ata/pata_ixp4xx_cf.c:168:5-8:
>>>> WARNING: Unsigned expression compared with zero: irq > 0
>>>
>>>     I'd understand < 0... but > 0? What tool warned about this issue?
>>>    
>>>> yes, by coccicheck, i will update commits information.

    Thanks!
    Yet, looking at your subject, the above should read irq < 0, not > 0.

>>>> Signed-off-by: Junlin Yang <yangjunlin@...ong.com>