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drm/vc4: hdmi: Fix error path of hpd-gpios

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[ Upstream commit e075a7811977ff51c917a65ed1896e08231d2615 ]

If the of_get_named_gpio_flags call fails in vc4_hdmi_bind, we jump to
the err_unprepare_hsm label. That label will then call
pm_runtime_disable and put_device on the DDC device.

We just retrieved the DDC device, so the latter is definitely justified.
However at that point we still haven't called pm_runtime_enable, so the
call to pm_runtime_disable is not supposed to be there.

Fixes: 10ee275cb1 ("drm/vc4: prepare for CEC support")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210524131852.263883-1-maxime@cerno.tech
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Maxime Ripard 2021-05-24 15:18:51 +02:00 committed by Greg Kroah-Hartman
parent 756679a123
commit 43b7f1dec6
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/vc4/vc4_hdmi.c
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@ -1795,7 +1795,7 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
&hpd_gpio_flags);
if (vc4_hdmi->hpd_gpio < 0) {
ret = vc4_hdmi->hpd_gpio;
goto err_unprepare_hsm;
goto err_put_ddc;
}
vc4_hdmi->hpd_active_low = hpd_gpio_flags & OF_GPIO_ACTIVE_LOW;
@ -1836,8 +1836,8 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
vc4_hdmi_connector_destroy(&vc4_hdmi->connector);
err_destroy_encoder:
drm_encoder_cleanup(encoder);
err_unprepare_hsm:
pm_runtime_disable(dev);
err_put_ddc:
put_device(&vc4_hdmi->ddc->dev);
return ret;