[PATCHv2 4/7] iio: adc: exynos: Use input_device_enabled()

[Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxxxx>]

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

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxxxx>
---
 drivers/iio/adc/exynos_adc.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c
index 22131a677445..1253d94089a7 100644
--- a/drivers/iio/adc/exynos_adc.c
+++ b/drivers/iio/adc/exynos_adc.c
@@ -630,10 +630,13 @@ static irqreturn_t exynos_ts_isr(int irq, void *dev_id)
 	struct exynos_adc *info = dev_id;
 	struct iio_dev *dev = dev_get_drvdata(info->dev);
 	u32 x, y;
-	bool pressed;
+	bool pressed, cont;
 	int ret;
 
-	while (info->input->users) {
+	mutex_lock(&info->input);
+	cont = input_device_enabled(info->input);
+	mutex_unlock(&info->input);
+	while (cont) {
 		ret = exynos_read_s3c64xx_ts(dev, &x, &y);
 		if (ret == -ETIMEDOUT)
 			break;
@@ -651,6 +654,10 @@ static irqreturn_t exynos_ts_isr(int irq, void *dev_id)
 		input_sync(info->input);
 
 		usleep_range(1000, 1100);
+
+		mutex_lock(&info->input);
+		cont = input_device_enabled(info->input);
+		mutex_unlock(&info->input);
 	}
 
 	writel(0, ADC_V1_CLRINTPNDNUP(info->regs));
-- 
2.17.1