[FIXED PATCH v4 5/7] iio: adc: exynos: Use input_device_enabled()

[Andrzej Pietrasiewicz]

A new helper is available, so use it. Inspecting 'users' member of
input_dev requires taking device's mutex.

Signed-off-by: Andrzej Pietrasiewicz <andrze...@collabora.com>
---
 drivers/iio/adc/exynos_adc.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c
index 22131a677445..2761c3aea2c6 100644
--- a/drivers/iio/adc/exynos_adc.c
+++ b/drivers/iio/adc/exynos_adc.c
@@ -633,7 +633,9 @@ static irqreturn_t exynos_ts_isr(int irq, void *dev_id)
        bool pressed;
        int ret;
 
-       while (info->input->users) {
+       mutex_lock(&info->input->mutex);
+       while (input_device_enabled(info->input)) {
+               mutex_unlock(&info->input->mutex);
                ret = exynos_read_s3c64xx_ts(dev, &x, &y);
                if (ret == -ETIMEDOUT)
                        break;
@@ -651,7 +653,10 @@ static irqreturn_t exynos_ts_isr(int irq, void *dev_id)
                input_sync(info->input);
 
                usleep_range(1000, 1100);
+
+               mutex_lock(&info->input->mutex);
        }
+       mutex_unlock(&info->input->mutex);
 
        writel(0, ADC_V1_CLRINTPNDNUP(info->regs));
 
-- 
2.17.1