phy: amlogic: fix error path in phy_g12a_usb3_pcie_probe()

[ Upstream commit 2c8045d48dee703ad8eab2be7d6547765a89c069 ]

If clk_prepare_enable() fails we call clk_disable_unprepare()
in the error path what results in a warning that the clock
is disabled and unprepared already.
And if we fail later in phy_g12a_usb3_pcie_probe() then we
bail out w/o calling clk_disable_unprepare().
This patch fixes both errors.

Fixes: 36077e16c050 ("phy: amlogic: Add Amlogic G12A USB3 + PCIE Combo PHY Driver")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/8e416f95-1084-ee28-860e-7884f7fa2e32@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/phy/amlogic/phy-meson-g12a-usb3-pcie.c b/drivers/phy/amlogic/phy-meson-g12a-usb3-pcie.c
index 5b471ab..54d65a6 100644 (file)
--- a/drivers/phy/amlogic/phy-meson-g12a-usb3-pcie.c
+++ b/drivers/phy/amlogic/phy-meson-g12a-usb3-pcie.c
@@ -414,19 +414,19 @@ static int phy_g12a_usb3_pcie_probe(struct platform_device *pdev)
 
        ret = clk_prepare_enable(priv->clk_ref);
        if (ret)
-               goto err_disable_clk_ref;
+               return ret;
 
        priv->reset = devm_reset_control_array_get_exclusive(dev);
-       if (IS_ERR(priv->reset))
-               return PTR_ERR(priv->reset);
+       if (IS_ERR(priv->reset)) {
+               ret = PTR_ERR(priv->reset);
+               goto err_disable_clk_ref;
+       }
 
        priv->phy = devm_phy_create(dev, np, &phy_g12a_usb3_pcie_ops);
        if (IS_ERR(priv->phy)) {
                ret = PTR_ERR(priv->phy);
-               if (ret != -EPROBE_DEFER)
-                       dev_err(dev, "failed to create PHY\n");
-
-               return ret;
+               dev_err_probe(dev, ret, "failed to create PHY\n");
+               goto err_disable_clk_ref;
        }
 
        phy_set_drvdata(priv->phy, priv);
@@ -434,8 +434,12 @@ static int phy_g12a_usb3_pcie_probe(struct platform_device *pdev)
 
        phy_provider = devm_of_phy_provider_register(dev,
                                                     phy_g12a_usb3_pcie_xlate);
+       if (IS_ERR(phy_provider)) {
+               ret = PTR_ERR(phy_provider);
+               goto err_disable_clk_ref;
+       }
 
-       return PTR_ERR_OR_ZERO(phy_provider);
+       return 0;
 
 err_disable_clk_ref:
        clk_disable_unprepare(priv->clk_ref);