iio: sx9500: Add missing init in sx9500_buffer_pre{en,dis}able()

drivers/iio/proximity/sx9500.c: In function ‘sx9500_buffer_preenable’:
drivers/iio/proximity/sx9500.c:682: warning: ‘ret’ may be used uninitialized in this function
drivers/iio/proximity/sx9500.c: In function ‘sx9500_buffer_predisable’:
drivers/iio/proximity/sx9500.c:706: warning: ‘ret’ may be used uninitialized in this function

If active_scan_mask is empty, it will loop once more over all channels,
doing nothing.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Vlad Dogaru <vlad.dogaru@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/proximity/sx9500.c b/drivers/iio/proximity/sx9500.c
index d260509d60008721be7d3820e09c7043d0103f7c..3d756bd8c703230bfc93f530d03399f9f5e1413f 100644 (file)
--- a/drivers/iio/proximity/sx9500.c
+++ b/drivers/iio/proximity/sx9500.c
@@ -682,7 +682,7 @@ out:
 static int sx9500_buffer_preenable(struct iio_dev *indio_dev)
 {
        struct sx9500_data *data = iio_priv(indio_dev);
-       int ret, i;
+       int ret = 0, i;
 
        mutex_lock(&data->mutex);
 
@@ -706,7 +706,7 @@ static int sx9500_buffer_preenable(struct iio_dev *indio_dev)
 static int sx9500_buffer_predisable(struct iio_dev *indio_dev)
 {
        struct sx9500_data *data = iio_priv(indio_dev);
-       int ret, i;
+       int ret = 0, i;
 
        iio_triggered_buffer_predisable(indio_dev);