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drm/bridge: Fix error handling in analogix_dp_probe

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[ Upstream commit 9f15930bb2 ]

In the error handling path, the clk_prepare_enable() function
call should be balanced by a corresponding 'clk_disable_unprepare()'
call, as already done in the remove function.

Fixes: 3424e3a4f8 ("drm: bridge: analogix/dp: split exynos dp driver to bridge directory")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220420011644.25730-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Miaoqian Lin 2022-04-20 01:16:40 +00:00 committed by Greg Kroah-Hartman
parent f1d4f19a79
commit 55fddbb1e2
1 changed files with 13 additions and 5 deletions
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18
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
View file

@ -1696,8 +1696,10 @@ analogix_dp_probe(struct device *dev, struct analogix_dp_plat_data *plat_data)
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
dp->reg_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(dp->reg_base))
return ERR_CAST(dp->reg_base);
if (IS_ERR(dp->reg_base)) {
ret = PTR_ERR(dp->reg_base);
goto err_disable_clk;
}
dp->force_hpd = of_property_read_bool(dev->of_node, "force-hpd");
@ -1709,7 +1711,8 @@ analogix_dp_probe(struct device *dev, struct analogix_dp_plat_data *plat_data)
if (IS_ERR(dp->hpd_gpiod)) {
dev_err(dev, "error getting HDP GPIO: %ld\n",
PTR_ERR(dp->hpd_gpiod));
return ERR_CAST(dp->hpd_gpiod);
ret = PTR_ERR(dp->hpd_gpiod);
goto err_disable_clk;
}
if (dp->hpd_gpiod) {
@ -1729,7 +1732,8 @@ analogix_dp_probe(struct device *dev, struct analogix_dp_plat_data *plat_data)
if (dp->irq == -ENXIO) {
dev_err(&pdev->dev, "failed to get irq\n");
return ERR_PTR(-ENODEV);
ret = -ENODEV;
goto err_disable_clk;
}
ret = devm_request_threaded_irq(&pdev->dev, dp->irq,
@ -1738,11 +1742,15 @@ analogix_dp_probe(struct device *dev, struct analogix_dp_plat_data *plat_data)
irq_flags, "analogix-dp", dp);
if (ret) {
dev_err(&pdev->dev, "failed to request irq\n");
return ERR_PTR(ret);
goto err_disable_clk;
}
disable_irq(dp->irq);
return dp;
err_disable_clk:
clk_disable_unprepare(dp->clock);
return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(analogix_dp_probe);