linux-kernel - [PATCH 2/4] iio: hid-sensor-trigger: Decrement runtime pm enable count on driver removal

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Message-Id: <20201119030326.6447-3-xiang.ye@intel.com>
Date:   Thu, 19 Nov 2020 11:03:24 +0800
From:   Ye Xiang <xiang.ye@...el.com>
To:     jikos@...nel.org, jic23@...nel.org,
        srinivas.pandruvada@...ux.intel.com
Cc:     linux-input@...r.kernel.org, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org, Ye Xiang <xiang.ye@...el.com>
Subject: [PATCH 2/4] iio: hid-sensor-trigger: Decrement runtime pm enable count on driver removal

To avoid pm_runtime_disable called repeatedly by hid sensor drivers,
decrease runtime pm enable count after call it.

Signed-off-by: Ye Xiang <xiang.ye@...el.com>
---
 drivers/iio/common/hid-sensors/hid-sensor-trigger.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
index ff375790b7e8..30340abcbc8d 100644
--- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
+++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
@@ -227,8 +227,10 @@ static int hid_sensor_data_rdy_trigger_set_state(struct iio_trigger *trig,
 void hid_sensor_remove_trigger(struct iio_dev *indio_dev,
 			       struct hid_sensor_common *attrb)
 {
-	if (atomic_read(&attrb->runtime_pm_enable))
+	if (atomic_read(&attrb->runtime_pm_enable)) {
 		pm_runtime_disable(&attrb->pdev->dev);
+		atomic_dec(&attrb->runtime_pm_enable);
+	}
 
 	pm_runtime_set_suspended(&attrb->pdev->dev);
 	pm_runtime_put_noidle(&attrb->pdev->dev);
-- 
2.17.1