From 363506cd71a5cafeee67b236112f1baf8c30b0ea Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 31 Jul 2012 21:28:26 +0800 Subject: regulator: wm831x-ldo: Check return value of wm831x_reg_read() wm831x_reg_read() returns negative error code on failure. This prevents using the error code as the value read. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- drivers/regulator/wm831x-ldo.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/regulator/wm831x-ldo.c') diff --git a/drivers/regulator/wm831x-ldo.c b/drivers/regulator/wm831x-ldo.c index 5cb70ca1e98d..56a6de3dd883 100644 --- a/drivers/regulator/wm831x-ldo.c +++ b/drivers/regulator/wm831x-ldo.c @@ -205,6 +205,8 @@ static int wm831x_gp_ldo_get_status(struct regulator_dev *rdev) /* Is it reporting under voltage? */ ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS); + if (ret < 0) + return ret; if (ret & mask) return REGULATOR_STATUS_ERROR; @@ -469,6 +471,8 @@ static int wm831x_aldo_get_status(struct regulator_dev *rdev) /* Is it reporting under voltage? */ ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS); + if (ret < 0) + return ret; if (ret & mask) return REGULATOR_STATUS_ERROR; -- cgit