From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: Neil Armstrong <narmstrong@baylibre.com>
Cc: linux-amlogic@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] drm/meson: fix shutdown crash when component not probed
Date: Thu, 20 May 2021 22:25:45 +0200 [thread overview]
Message-ID: <CAFBinCC0aaMUbBkJ4bjhFa0A+sZH1muyW6kqAQYfjjXOkrNPGg@mail.gmail.com> (raw)
In-Reply-To: <20210430082744.3638743-1-narmstrong@baylibre.com>
Hi Neil,
since this has not received any Reviewed-by yet I tried my best to
review it myself
On Fri, Apr 30, 2021 at 10:28 AM Neil Armstrong <narmstrong@baylibre.com> wrote:
[...]
> --- a/drivers/gpu/drm/meson/meson_drv.c
> +++ b/drivers/gpu/drm/meson/meson_drv.c
> @@ -485,11 +485,12 @@ static int meson_probe_remote(struct platform_device *pdev,
> static void meson_drv_shutdown(struct platform_device *pdev)
> {
> struct meson_drm *priv = dev_get_drvdata(&pdev->dev);
this part made it hard for me because I was wondering where the
matching dev_set_drvdata call is
it turns out platform_set_drvdata is used instead, meaning for me it
would have been easier to understand if platform_get_drvdata was used
here
that's however nothing which has changed with this patch
> - struct drm_device *drm = priv->drm;
>
> - DRM_DEBUG_DRIVER("\n");
> - drm_kms_helper_poll_fini(drm);
> - drm_atomic_helper_shutdown(drm);
> + if (!priv)
> + return;
> +
> + drm_kms_helper_poll_fini(priv->drm);
> + drm_atomic_helper_shutdown(priv->drm);
> }
then this part finally made sense to me (as non-drm person), as
platform_set_drvdata comes near the end of meson_drv_bind_master (so
any errors would cause the drvdata to be NULL).
with this I can also give me:
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
in addition to my:
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Can you please queue this up for -fixes or do we need to ask someone to do it?
Best regards,
Martin
next prev parent reply other threads:[~2021-05-20 20:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-30 8:27 [PATCH] drm/meson: fix shutdown crash when component not probed Neil Armstrong
2021-05-02 23:04 ` Martin Blumenstingl
2021-05-20 20:25 ` Martin Blumenstingl [this message]
2021-05-25 7:19 ` Neil Armstrong
2021-05-25 7:27 ` Neil Armstrong
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