linux-kernel - Re: [PATCH] staging: iio: cdc: ad7746: Fix unnecessary check andassignment in ad7746

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Date:   Tue, 18 May 2021 17:27:07 +0800
From:   tangbin <tangbin@...s.chinamobile.com>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     lars@...afoo.de, Michael.Hennerich@...log.com, jic23@...nel.org,
        knaack.h@....de, pmeerw@...erw.net, gregkh@...uxfoundation.org,
        linux-iio@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: iio: cdc: ad7746: Fix unnecessary check
 andassignment in ad7746_probe()

Hi Dan：

On 2021/5/18 15:52, Dan Carpenter wrote:
> On Mon, May 17, 2021 at 11:00:06PM +0800, Tang Bin wrote:
>> @@ -730,11 +730,7 @@ static int ad7746_probe(struct i2c_client *client,
>>   	if (ret < 0)
>>   		return ret;
>>   
>> -	ret = devm_iio_device_register(indio_dev->dev.parent, indio_dev);
>> -	if (ret)
>> -		return ret;
>> -
>> -	return 0;
>> +	return devm_iio_device_register(indio_dev->dev.parent, indio_dev);
>>   }
> This sort of thing is done deliberately as a style choice...  I probably
> wouldn't have written it that way myself, but there really isn't a
> downside to leaving it as-is.
>
> The unused "int ret = 0;" just introduces a static checker warning about
> unused assignments and disables the static checker warning for
> uninitialized variables so we want to remove that.
>
Got it, I will send this patch for you.

Thanks

Tang Bin