staging:iio:ad2s90: Make read_raw return spi_read's error code

Previously, when spi_read returned an error code inside ad2s90_read_raw,
the code was ignored and IIO_VAL_INT was returned. This patch makes the
function return the error code returned by spi_read when it fails.

Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/staging/iio/resolver/ad2s90.c b/drivers/staging/iio/resolver/ad2s90.c
index 59586947a9366c15ae4f2b857d358bd83ab6b1e9..ba55de29ef36a77b24e4792b1acdc9214a3bd552 100644 (file)
--- a/drivers/staging/iio/resolver/ad2s90.c
+++ b/drivers/staging/iio/resolver/ad2s90.c
@@ -36,11 +36,12 @@ static int ad2s90_read_raw(struct iio_dev *indio_dev,
 
        mutex_lock(&st->lock);
        ret = spi_read(st->sdev, st->rx, 2);
-       if (ret)
-               goto error_ret;
+       if (ret < 0) {
+               mutex_unlock(&st->lock);
+               return ret;
+       }
        *val = (((u16)(st->rx[0])) << 4) | ((st->rx[1] & 0xF0) >> 4);
 
-error_ret:
        mutex_unlock(&st->lock);
 
        return IIO_VAL_INT;