drm/tegra: sor: Avoid timeouts on unplug events (68a2ebb5) · Commits · 戴 / test

When the SOR is disabled in DP mode as part of an unplug event, do not attempt to power the DP link down. Powering down the link requires the DPAUX to transmit AUX messages which only works if there's a connected sink. Signed-off-by:

Thierry Reding <treding@nvidia.com>

drivers/gpu/drm/tegra/sor.c

+10 −3

Original line number	Diff line number	Diff line
		@@ -2663,9 +2663,16 @@ static void tegra_sor_dp_disable(struct drm_encoder *encoder)
		if (output->panel)
		drm_panel_disable(output->panel);

		/*
		* Do not attempt to power down a DP link if we're not connected since
		* the AUX transactions would just be timing out.
		*/
		if (output->connector.status != connector_status_disconnected) {
		err = drm_dp_link_power_down(sor->aux, &sor->link);
		if (err < 0)
		dev_err(sor->dev, "failed to power down link: %d\n", err);
		dev_err(sor->dev, "failed to power down link: %d\n",
		err);
		}

		err = tegra_sor_detach(sor);
		if (err < 0)

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