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authorAlexey Khoroshilov <khoroshilov@ispras.ru>2018-02-23 00:40:11 +0300
committerKishon Vijay Abraham I <kishon@ti.com>2018-03-16 13:40:42 +0530
commit124380cb0e7a5fb704a81d135e5b7b4904c1ef95 (patch)
treeb4c1baae331a729238129c99ce53f379be0f145e /drivers/phy
parentd7119224bfe6e8efbf821a52db7da9530d790f07 (diff)
downloadlinux-124380cb0e7a5fb704a81d135e5b7b4904c1ef95.tar.bz2
phy: lpc18xx-usb-otg: error handling in lpc18xx_usb_otg_phy_power_on()
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>
Diffstat (limited to 'drivers/phy')
-rw-r--r--drivers/phy/phy-lpc18xx-usb-otg.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/phy/phy-lpc18xx-usb-otg.c b/drivers/phy/phy-lpc18xx-usb-otg.c
index 3b7a71eb5b7e..7de280a45421 100644
--- a/drivers/phy/phy-lpc18xx-usb-otg.c
+++ b/drivers/phy/phy-lpc18xx-usb-otg.c
@@ -60,8 +60,14 @@ static int lpc18xx_usb_otg_phy_power_on(struct phy *phy)
return ret;
/* 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);
+ if (ret) {
+ clk_disable(lpc->clk);
+ return ret;
+ }
+
+ return 0;
}
static int lpc18xx_usb_otg_phy_power_off(struct phy *phy)