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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 18 May 2021 10:52:54 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Tang Bin <tangbin@...s.chinamobile.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 and
 assignment in ad7746_probe()

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.

regards,
dan carpenter