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drm/mediatek: Fix runtime PM leak in mtk_hdmi_ddc_v2_probe()

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pm_runtime_get_sync() unconditionally bumps the usage counter, but
nothing puts it back when devm_i2c_add_adapter() fails, leaving the DDC
runtime-resumed after a failed probe. Drop the reference on that error
path.

Fixes: 8d0f798862 ("drm/mediatek: Introduce HDMI/DDC v2 for MT8195/MT8188")
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260916174229.2088824-1-vulab@iscas.ac.cn/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
This commit is contained in:
Wentao Liang 2026-09-16 17:42:29 +00:00 committed by Chun-Kuang Hu
parent 3753e34b73
commit 2af45da333
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/mediatek/mtk_hdmi_ddc_v2.c
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@ -376,8 +376,10 @@ static int mtk_hdmi_ddc_v2_probe(struct platform_device *pdev)
pm_runtime_get_sync(dev);
ret = devm_i2c_add_adapter(dev, &ddc->adap);
if (ret < 0)
if (ret < 0) {
pm_runtime_put_noidle(dev);
return dev_err_probe(dev, ret, "Cannot add DDC I2C adapter\n");
}
platform_set_drvdata(pdev, ddc);
return 0;