[PATCHv2 5/7] tegra_cec: use new cec_notifier_parse_hdmi_phandle helper

[Hans Verkuil]

The Tegra CEC driver increased the HDMI device refcount when
it shouldn't. Use the new helper function to ensure that that
doesn't happen and to simplify the driver code.

Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
---
 drivers/media/platform/tegra-cec/tegra_cec.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/drivers/media/platform/tegra-cec/tegra_cec.c 
b/drivers/media/platform/tegra-cec/tegra_cec.c
index aba488cd0e64..7fb3a4fa07c1 100644
--- a/drivers/media/platform/tegra-cec/tegra_cec.c
+++ b/drivers/media/platform/tegra-cec/tegra_cec.c
@@ -327,21 +327,15 @@ static const struct cec_adap_ops tegra_cec_ops = {
 
 static int tegra_cec_probe(struct platform_device *pdev)
 {
-       struct platform_device *hdmi_dev;
-       struct device_node *np;
+       struct device *hdmi_dev;
        struct tegra_cec *cec;
        struct resource *res;
        int ret = 0;
 
-       np = of_parse_phandle(pdev->dev.of_node, "hdmi-phandle", 0);
+       hdmi_dev = cec_notifier_parse_hdmi_phandle(&pdev->dev);
 
-       if (!np) {
-               dev_err(&pdev->dev, "Failed to find hdmi node in device 
tree\n");
+       if (!hdmi_dev)
                return -ENODEV;
-       }
-       hdmi_dev = of_find_device_by_node(np);
-       if (hdmi_dev == NULL)
-               return -EPROBE_DEFER;
 
        cec = devm_kzalloc(&pdev->dev, sizeof(struct tegra_cec), GFP_KERNEL);
 
@@ -400,7 +394,7 @@ static int tegra_cec_probe(struct platform_device *pdev)
                goto clk_error;
        }
 
-       cec->notifier = cec_notifier_get(&hdmi_dev->dev);
+       cec->notifier = cec_notifier_get(hdmi_dev);
        if (!cec->notifier) {
                ret = -ENOMEM;
                goto clk_error;
-- 
2.20.1