From 71a1a0c4e51ed0d047d397ccf6a3a4f4966ca7a2 Mon Sep 17 00:00:00 2001 From: Miaoqian Lin Date: Wed, 20 Apr 2022 01:16:40 +0000 Subject: [PATCH] drm/bridge: Fix error handling in analogix_dp_probe 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: 86035b05b557 ("drm: bridge: analogix/dp: split exynos dp driver to bridge directory") Signed-off-by: Miaoqian Lin Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20220420011644.25730-1-linmq006@gmail.com --- .../gpu/drm/bridge/analogix/analogix_dp_core.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index c5afccd46440b..b97f6e8f0f6bc 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -1708,8 +1708,10 @@ 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"); @@ -1721,7 +1723,8 @@ 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) { @@ -1741,7 +1744,8 @@ 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, @@ -1750,11 +1754,15 @@ 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); -- 2.39.5