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| author | Axel Lin <axel.lin@gmail.com> | 2012-07-31 17:28:26 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-08-28 22:00:25 +0400 |
| commit | 363506cd71a5cafeee67b236112f1baf8c30b0ea (patch) | |
| tree | 3fa3b6aa6e7d580cb95b1f3f89884976c91c81f4 /drivers/regulator/wm831x-ldo.c | |
| parent | 7c7475c009260d02d56f940816bb7c86fce1542e (diff) | |
| download | linux-363506cd71a5cafeee67b236112f1baf8c30b0ea.tar.xz | |
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 <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/regulator/wm831x-ldo.c')
| -rw-r--r-- | drivers/regulator/wm831x-ldo.c | 4 |
1 files changed, 4 insertions, 0 deletions
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; |