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phy: lpc18xx-usb-otg: error handling in lpc18xx_usb_otg_phy_power_on()

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If regmap_update_bits() fails in lpc18xx_usb_otg_phy_power_on(),
lpc->clk is left enabled.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
Alexey Khoroshilov 2018-02-23 00:40:11 +03:00 committed by Kishon Vijay Abraham I
parent d7119224bf
commit 124380cb0e
1 changed files with 7 additions and 1 deletions
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8
drivers/phy/phy-lpc18xx-usb-otg.c
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@ -60,8 +60,14 @@ static int lpc18xx_usb_otg_phy_power_on(struct phy *phy)
return ret; return ret;
/* The bit in CREG is cleared to enable the PHY */ /* The bit in CREG is cleared to enable the PHY */
return regmap_update_bits(lpc->reg, LPC18XX_CREG_CREG0, ret = regmap_update_bits(lpc->reg, LPC18XX_CREG_CREG0,
LPC18XX_CREG_CREG0_USB0PHY, 0); LPC18XX_CREG_CREG0_USB0PHY, 0);
if (ret) {
clk_disable(lpc->clk);
return ret;
}
return 0;
} }
static int lpc18xx_usb_otg_phy_power_off(struct phy *phy) static int lpc18xx_usb_otg_phy_power_off(struct phy *phy)