From: Dmitry Osipenko <digetx@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Lyude Paul <lyude@redhat.com>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
David Airlie <airlied@linux.ie>,
Thomas Graichen <thomas.graichen@gmail.com>,
dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1 2/2] drm/tegra: Use drm_dp_aux_register_ddc/chardev() helpers
Date: Tue, 9 Nov 2021 17:39:02 +0300 [thread overview]
Message-ID: <49ffd29b-eb64-e0ca-410c-44074673d740@gmail.com> (raw)
In-Reply-To: <71fcbc09-5b60-ee76-49b2-94adc965eda5@gmail.com>
09.11.2021 17:17, Dmitry Osipenko пишет:
> 09.11.2021 17:08, Dmitry Osipenko пишет:
>>> +static void host1x_drm_dev_deinit(struct host1x_device *dev)
>>> +{
>>> + struct drm_device *drm = dev_get_drvdata(&dev->dev);
>> And platform_unregister_drivers() should be moved here.
>>
>
> Nah, that should cause deadlock. This ad-hoc is too lame.
Actually, there is no problem here as I see now. The host1x driver
populates DT nodes after host1x_register() [1], meaning that Host1x DRM
will be always inited first.
[1]
https://elixir.bootlin.com/linux/v5.15/source/drivers/gpu/host1x/dev.c#L475
Still I'm not a fan of the ad-hoc solution.
> Another solution is to defer probing of DP AUX driver while
> tegra_drm_device() returns NULL, but it's icky.
>
> Reverting the original DP AUX DDC registration order is the best option
> so far, IMO.
>
next prev parent reply other threads:[~2021-11-09 14:39 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-07 23:08 [PATCH v1 1/2] drm/dp: Add drm_dp_aux_register_ddc/chardev() helpers Dmitry Osipenko
2021-11-07 23:08 ` [PATCH v1 2/2] drm/tegra: Use " Dmitry Osipenko
2021-11-08 15:17 ` Daniel Vetter
2021-11-08 18:16 ` Dmitry Osipenko
2021-11-09 9:19 ` Daniel Vetter
2021-11-09 13:52 ` Dmitry Osipenko
2021-11-09 14:08 ` Dmitry Osipenko
2021-11-09 14:17 ` Dmitry Osipenko
2021-11-09 14:39 ` Dmitry Osipenko [this message]
2021-11-12 10:52 ` Thierry Reding
2021-11-12 14:32 ` Dmitry Osipenko
2021-11-12 20:26 ` Lyude Paul
2021-11-12 20:45 ` Dmitry Osipenko
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