iio: exynos_adc: do a reinit_completion before the conversion

Add reinit_completion() before the wait_for_completion_timeout in
raw_read() call.

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c
index a9946ec..d325aea 100644 (file)
--- a/drivers/iio/adc/exynos_adc.c
+++ b/drivers/iio/adc/exynos_adc.c
@@ -151,6 +151,7 @@ static int exynos_read_raw(struct iio_dev *indio_dev,
                return -EINVAL;
 
        mutex_lock(&indio_dev->mlock);
+       reinit_completion(&info->completion);
 
        /* Select the channel to be used and Trigger conversion */
        if (info->version == ADC_V2) {