iio: light: bh1780: return after write

When writing a value using direct reg access from debugfs
we need to return and not fall through to reading the
value, lest we'll dereference a NULL pointer.

Cc: Dan Carpenter <dan.carpenter@oracle.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/light/bh1780.c b/drivers/iio/light/bh1780.c
index 72b364e..f835953 100644 (file)
--- a/drivers/iio/light/bh1780.c
+++ b/drivers/iio/light/bh1780.c
@@ -84,7 +84,7 @@ static int bh1780_debugfs_reg_access(struct iio_dev *indio_dev,
        int ret;
 
        if (!readval)
-               bh1780_write(bh1780, (u8)reg, (u8)writeval);
+               return bh1780_write(bh1780, (u8)reg, (u8)writeval);
 
        ret = bh1780_read(bh1780, (u8)reg);
        if (ret < 0)