linux-kernel - Re: [PATCH] drm/msm/dp: fix error check return value of irq_of_parse_and

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: <CAA8EJpqJrWpRo_DJJdJqSMyDUyJJt3L3S7dNuWw6YeQgsp+TkA@mail.gmail.com>
Date:   Fri, 22 Apr 2022 13:41:56 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     cgel.zte@...il.com
Cc:     robdclark@...il.com, sean@...rly.run, quic_abhinavk@...cinc.com,
        airlied@...ux.ie, daniel@...ll.ch, swboyd@...omium.org,
        quic_khsieh@...cinc.com, bjorn.andersson@...aro.org,
        linux@...ck-us.net, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, Lv Ruyi <lv.ruyi@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: Re: [PATCH] drm/msm/dp: fix error check return value of irq_of_parse_and_map()

On Fri, 22 Apr 2022 at 11:50, <cgel.zte@...il.com> wrote:
>
> From: Lv Ruyi <lv.ruyi@....com.cn>
>
> The irq_of_parse_and_map() function returns 0 on failure, and does not
> return an negative value.
>
> Fixes:  8ede2ecc3e5e ("drm/msm/dp: Add DP compliance tests on Snapdragon Chipsets")
> Reported-by: Zeal Robot <zealci@....com.cn>
> Signed-off-by: Lv Ruyi <lv.ruyi@....com.cn>

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

> ---
>  drivers/gpu/drm/msm/dp/dp_display.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
> index a42732b67349..3926d2ac107d 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -1239,7 +1239,7 @@ int dp_display_request_irq(struct msm_dp *dp_display)
>         dp = container_of(dp_display, struct dp_display_private, dp_display);
>
>         dp->irq = irq_of_parse_and_map(dp->pdev->dev.of_node, 0);
> -       if (dp->irq < 0) {
> +       if (!dp->irq) {
>                 rc = dp->irq;
>                 DRM_ERROR("failed to get irq: %d\n", rc);
>                 return rc;
> --
> 2.25.1
>


-- 
With best wishes
Dmitry