From: Fabio Baltieri Date: Wed, 3 Apr 2013 14:02:25 +0000 (+0200) Subject: usb: phy: ab8500-usb: check regulator_enable return value X-Git-Tag: firefly_0821_release~3680^2~672^2~11^2~11 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=88b1c78db32782041d9548e3c4ab405f9e9eab59;p=firefly-linux-kernel-4.4.55.git usb: phy: ab8500-usb: check regulator_enable return value Since regulator_enable() is going to be marked as __must_check in the next merge window, always check regulator_enable() return value and print a warning if it fails. Cc: Linus Walleij Signed-off-by: Fabio Baltieri Signed-off-by: Felipe Balbi --- diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c index 749614cf6e2b..4acef26a2ef5 100644 --- a/drivers/usb/phy/phy-ab8500-usb.c +++ b/drivers/usb/phy/phy-ab8500-usb.c @@ -167,7 +167,9 @@ static void ab8500_usb_regulator_enable(struct ab8500_usb *ab) { int ret, volt; - regulator_enable(ab->v_ape); + ret = regulator_enable(ab->v_ape); + if (ret) + dev_err(ab->dev, "Failed to enable v-ape\n"); if (!is_ab8500_2p0_or_earlier(ab->ab8500)) { ab->saved_v_ulpi = regulator_get_voltage(ab->v_ulpi); @@ -185,7 +187,9 @@ static void ab8500_usb_regulator_enable(struct ab8500_usb *ab) ret); } - regulator_enable(ab->v_ulpi); + ret = regulator_enable(ab->v_ulpi); + if (ret) + dev_err(ab->dev, "Failed to enable vddulpivio18\n"); if (!is_ab8500_2p0_or_earlier(ab->ab8500)) { volt = regulator_get_voltage(ab->v_ulpi); @@ -194,7 +198,9 @@ static void ab8500_usb_regulator_enable(struct ab8500_usb *ab) volt); } - regulator_enable(ab->v_musb); + ret = regulator_enable(ab->v_musb); + if (ret) + dev_err(ab->dev, "Failed to enable musb_1v8\n"); } static void ab8500_usb_regulator_disable(struct ab8500_usb *ab)