linux-kernel - Re: [PATCH v3 3/3] phy: amlogic: meson8b-usb2: fix shared reset control use

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] [day] [month] [year] [list]

Message-ID: <bb0ca11d-789a-6f43-ffad-624407122fdd@baylibre.com>
Date:   Sun, 5 Dec 2021 22:35:20 +0100
From:   Amjad Ouled-Ameur <aouledameur@...libre.com>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc:     khilman@...libre.com, p.zabel@...gutronix.de, balbi@...nel.org,
        jbrunet@...libre.com, linux-amlogic@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH v3 3/3] phy: amlogic: meson8b-usb2: fix shared reset
 control use

Hi Martin,

Thank you for reviewing this.

On 21/11/2021 00:57, Martin Blumenstingl wrote:
> Hi Amjad,
>
> Thanks for working on this!
>
> On Fri, Nov 12, 2021 at 5:33 PM Amjad Ouled-Ameur
> <aouledameur@...libre.com> wrote:
> [...]
>> +               reset_control_rearm(priv->reset);
> Using priv->reset in this driver currently requires an IS_ERR check beforehand.
> When I wrote the driver originally I used the following code in
> phy_meson8b_usb2_probe:
>    priv->reset = ...
>    if (PTR_ERR(priv->reset) == -EPROBE_DEFER)
>      return PTR_ERR(priv->reset);
>
> That means: priv->reset can (in theory) be an error pointer at runtime.
> Since your patch is valid: can you please add another one (before this
> one) in the series and change the priv->reset error checking to use
> something like:
>    if (IS_ERR(priv->reset))
>      return dev_err_probe(&pdev->dev, PTR_ERR(priv->reset), "Failed to
> get the reset line");

No worries, will do.


Regards,

Amjad

> With such a patch you can consider this one as:
> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
>
>
> Best regards,
> Martin