mfd: Return an error on failed wm831x register writes

Got dropped in the regmap conversion.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c
index 3b761893f9ba..f5e54fae8ada 100644
--- a/drivers/mfd/wm831x-core.c
+++ b/drivers/mfd/wm831x-core.c
@@ -559,6 +559,8 @@ static int wm831x_write(struct wm831x *wm831x, unsigned short reg,
                 dev_vdbg(wm831x->dev, "Write %04x to R%d(0x%x)\n",
                          buf[i], reg + i, reg + i);
                 ret = regmap_write(wm831x->regmap, reg + i, buf[i]);
+                if (ret != 0)
+                        return ret;
         }
 
         return 0;