linux-kernel - Re: [PATCH -next] iio:ad7797: Use correct attribute

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]

Message-ID: <f82a318f-16b3-0bc0-61bf-0c54da05446d@metafoo.de>
Date:   Mon, 9 Mar 2020 11:10:05 +0100
From:   Lars-Peter Clausen <lars@...afoo.de>
To:     "Ardelean, Alexandru" <alexandru.Ardelean@...log.com>,
        "stefan.popa@...log.com" <stefan.popa@...log.com>,
        "Jonathan.Cameron@...wei.com" <Jonathan.Cameron@...wei.com>,
        "pmeerw@...erw.net" <pmeerw@...erw.net>,
        "jic23@...nel.org" <jic23@...nel.org>,
        "knaack.h@....de" <knaack.h@....de>,
        "Hennerich, Michael" <Michael.Hennerich@...log.com>,
        "yuehaibing@...wei.com" <yuehaibing@...wei.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>
Subject: Re: [PATCH -next] iio:ad7797: Use correct attribute_group

On 3/4/20 7:35 AM, Ardelean, Alexandru wrote:
> On Mon, 2020-03-02 at 21:32 +0800, YueHaibing wrote:
>> [External]
>>
>> It seems ad7797_attribute_group should be used in ad7797_info,
>> according to commit ("iio:ad7793: Add support for the ad7796 and ad7797").
> While the change looks good at first, I am thinking that this might introduce
> another issue while fixing this one.
>
> It looks like the ad7797_attributes[] array may also require the
> &iio_dev_attr_in_m_in_scale_available.dev_attr.attr attribute as well.
> It looks like the available scales should be printed for AD7997 as well.
>
> That being said, this patch is fine as-is.
> But it would require a patch [before-this-patch] to fix the ad7797_attributes
> array.
>
> Something like this:
>
> static struct attribute *ad7797_attributes[] = {
>          &iio_const_attr_sampling_frequency_available_ad7797.dev_attr.attr,
> +       &iio_dev_attr_in_m_in_scale_available.dev_attr.attr,
>         NULL
> };
>
> I'm hoping I'm right about this one. I sometimes don't notice things too well.
>
Scale is fixed for the ad7796 and not programmable. Usually we only have 
the scale attribute itself in that case and no scale_available attribute.

- Lars