From 7a504c935e42737e5ad40ea2f6f2d21b4dc27e81 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 17 Mar 2015 08:42:38 +0800 Subject: [PATCH] phy: samsung_usb2: Fixup samsung_usb2_phy_power_on/off paths Ensure we have balanced clk_prepare_enable/clk_disable_unprepare calls if .power_on or .power_off callbacks return error. Signed-off-by: Axel Lin Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-samsung-usb2.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/phy/phy-samsung-usb2.c b/drivers/phy/phy-samsung-usb2.c index 4a12f66b7fb5..55b6994932e3 100644 --- a/drivers/phy/phy-samsung-usb2.c +++ b/drivers/phy/phy-samsung-usb2.c @@ -37,10 +37,14 @@ static int samsung_usb2_phy_power_on(struct phy *phy) spin_lock(&drv->lock); ret = inst->cfg->power_on(inst); spin_unlock(&drv->lock); + if (ret) + goto err_power_on; } return 0; +err_power_on: + clk_disable_unprepare(drv->ref_clk); err_instance_clk: clk_disable_unprepare(drv->clk); err_main_clk: @@ -51,7 +55,7 @@ static int samsung_usb2_phy_power_off(struct phy *phy) { struct samsung_usb2_phy_instance *inst = phy_get_drvdata(phy); struct samsung_usb2_phy_driver *drv = inst->drv; - int ret = 0; + int ret; dev_dbg(drv->dev, "Request to power_off \"%s\" usb phy\n", inst->cfg->label); @@ -59,10 +63,12 @@ static int samsung_usb2_phy_power_off(struct phy *phy) spin_lock(&drv->lock); ret = inst->cfg->power_off(inst); spin_unlock(&drv->lock); + if (ret) + return ret; } clk_disable_unprepare(drv->ref_clk); clk_disable_unprepare(drv->clk); - return ret; + return 0; } static struct phy_ops samsung_usb2_phy_ops = {