linux-kernel - Re: [PATCH -next] media: rc: Fix a typo in lirc

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Date:   Wed, 2 Jun 2021 09:39:17 +0800
From:   tongtiangen <tongtiangen@...wei.com>
To:     Sean Young <sean@...s.org>
CC:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] media: rc: Fix a typo in lirc_ioctl



On 2021/6/1 18:25, Sean Young wrote:
> On Tue, Jun 01, 2021 at 06:02:35PM +0800, Tong Tiangen wrote:
>> Fix a typo in lirc_ioctl, apparently min_timeout should be used
>> in this case.
>>
>> Fixes: e589333f346b ("V4L/DVB: IR: extend interfaces to support more device settings")
>> Signed-off-by: Tong Tiangen <tongtiangen@...wei.com>
>> ---
>>   drivers/media/rc/lirc_dev.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
>> index 116daf90c858..abbeae2ccd4a 100644
>> --- a/drivers/media/rc/lirc_dev.c
>> +++ b/drivers/media/rc/lirc_dev.c
>> @@ -534,7 +534,7 @@ static long lirc_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
>>   
>>   	/* Generic timeout support */
>>   	case LIRC_GET_MIN_TIMEOUT:
>> -		if (!dev->max_timeout)
>> +		if (!dev->min_timeout)
> So maybe this isn't the clearest piece of code, but all rc drivers set
> either both of min_timeout & max_timeout, or neither. Having a max_timeout
> without a min_timeout does not make any sense.
>
> Changing this to min_timeout gives the impression min_timeout can be set
> without max_timeout, which is not the case. This should at least commented.
>
> Thanks
>
> Sean

I agree,  the necessary comments should be added here.

Thanks

>
>>   			ret = -ENOTTY;
>>   		else
>>   			val = dev->min_timeout;
>> -- 
>> 2.18.0.huawei.25
> .
>