The reference to the DDC controller device needs to be put back when we're
done with it. Let's use a device-managed action to simplify the driver.
Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 20 +++++++++++++-------
1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 36ded0f56548..350220786bef 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -2858,6 +2858,13 @@ static int vc4_hdmi_runtime_resume(struct device *dev)
return 0;
}
+static void vc4_hdmi_put_ddc_device(void *ptr)
+{
+ struct vc4_hdmi *vc4_hdmi = ptr;
+
+ put_device(&vc4_hdmi->ddc->dev);
+}
+
static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
{
const struct vc4_hdmi_variant *variant = of_device_get_match_data(dev);
@@ -2913,13 +2920,16 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
return -EPROBE_DEFER;
}
+ ret = devm_add_action_or_reset(dev, vc4_hdmi_put_ddc_device, vc4_hdmi);
+ if (ret)
+ return ret;
+
/* Only use the GPIO HPD pin if present in the DT, otherwise
* we'll use the HDMI core's register.
*/
vc4_hdmi->hpd_gpio = devm_gpiod_get_optional(dev, "hpd", GPIOD_IN);
if (IS_ERR(vc4_hdmi->hpd_gpio)) {
- ret = PTR_ERR(vc4_hdmi->hpd_gpio);
- goto err_put_ddc;
+ return PTR_ERR(vc4_hdmi->hpd_gpio);
}
vc4_hdmi->disable_wifi_frequencies =
@@ -2939,7 +2949,7 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
*/
ret = vc4_hdmi_runtime_resume(dev);
if (ret)
- goto err_put_ddc;
+ return ret;
pm_runtime_get_noresume(dev);
pm_runtime_set_active(dev);
@@ -2994,8 +3004,6 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
err_put_runtime_pm:
pm_runtime_put_sync(dev);
pm_runtime_disable(dev);
-err_put_ddc:
- put_device(&vc4_hdmi->ddc->dev);
return ret;
}
@@ -3032,8 +3040,6 @@ static void vc4_hdmi_unbind(struct device *dev, struct device *master,
vc4_hdmi_hotplug_exit(vc4_hdmi);
pm_runtime_disable(dev);
-
- put_device(&vc4_hdmi->ddc->dev);
}
static const struct component_ops vc4_hdmi_ops = {
--
2.36.1
