regulator: Fix check of unsigned return value and transmit errors in wm831x_gp_ldo_get_mode()

If ret is unsigned, the checks for negative wm831x_reg_read() return values
are wrong. The error value should be transmitted to its caller, e.g.
wm831x_gp_ldo_get_status() which tests for a negative return value.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/regulator/wm831x-ldo.c b/drivers/regulator/wm831x-ldo.c
index bb61aede4801..902db56ce099 100644
--- a/drivers/regulator/wm831x-ldo.c
+++ b/drivers/regulator/wm831x-ldo.c
@@ -175,18 +175,18 @@ static unsigned int wm831x_gp_ldo_get_mode(struct regulator_dev *rdev)
         struct wm831x *wm831x = ldo->wm831x;
         int ctrl_reg = ldo->base + WM831X_LDO_CONTROL;
         int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
-        unsigned int ret;
+        int ret;
 
         ret = wm831x_reg_read(wm831x, on_reg);
         if (ret < 0)
-                return 0;
+                return ret;
 
         if (!(ret & WM831X_LDO1_ON_MODE))
                 return REGULATOR_MODE_NORMAL;
 
         ret = wm831x_reg_read(wm831x, ctrl_reg);
         if (ret < 0)
-                return 0;
+                return ret;
 
         if (ret & WM831X_LDO1_LP_MODE)
                 return REGULATOR_MODE_STANDBY;