linux-kernel - Re: [PATCH 2/2] asix: fix wrong return value in asix_check_host

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Message-ID: <65ff1752-f60e-a3b3-2a5f-a7f0b9c97f36@gmail.com>
Date:   Tue, 21 Dec 2021 23:00:20 +0300
From:   Pavel Skripkin <paskripkin@...il.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     davem@...emloft.net, kuba@...nel.org, linux@...pel-privat.de,
        robert.foss@...labora.com, freddy@...x.com.tw,
        linux-usb@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] asix: fix wrong return value in
 asix_check_host_enable()

On 12/21/21 22:44, Andrew Lunn wrote:
> On Tue, Dec 21, 2021 at 10:40:05PM +0300, Pavel Skripkin wrote:
>> If asix_read_cmd() returns 0 on 30th interation, 0 will be returned from
>> asix_check_host_enable(), which is logically wrong. Fix it by returning
>> -ETIMEDOUT explicitly if we have exceeded 30 iterations
>> 
>> Fixes: a786e3195d6a ("net: asix: fix uninit value bugs")
>> Reported-by: Andrew Lunn <andrew@...n.ch>
>> Signed-off-by: Pavel Skripkin <paskripkin@...il.com>
>> ---
>>  drivers/net/usb/asix_common.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>> 
>> diff --git a/drivers/net/usb/asix_common.c b/drivers/net/usb/asix_common.c
>> index 06823d7141b6..8c61d410a123 100644
>> --- a/drivers/net/usb/asix_common.c
>> +++ b/drivers/net/usb/asix_common.c
>> @@ -83,7 +83,7 @@ static int asix_check_host_enable(struct usbnet *dev, int in_pm)
>>  			break;
>>  	}
>>  
>> -	return ret;
>> +	return i >= 30? -ETIMEDOUT: ret;
> 
> I think the coding style guidelines would recommend a space before the ?
> 

Ah, yes, I forgot to run chechpatch on 2nd one, sorry. Will fix in v2

> I would also replace the 30 with a #define, both here and in the for
> loop.

Will fix in v2 as well. Thanks for review!



With regards,
Pavel Skripkin