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Message-Id: <20210407045938.29129-1-dinghao.liu@zju.edu.cn>
Date: Wed, 7 Apr 2021 12:59:35 +0800
From: Dinghao Liu <dinghao.liu@....edu.cn>
To: dinghao.liu@....edu.cn, kjlu@....edu
Cc: Jonathan Cameron <jic23@...nel.org>,
Lars-Peter Clausen <lars@...afoo.de>,
Peter Meerwald-Stadler <pmeerw@...erw.net>,
Alexandru Ardelean <alexandru.ardelean@...log.com>,
Matt Ranostay <matt.ranostay@...sulko.com>,
Andy Shevchenko <andy.shevchenko@...il.com>,
linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] iio: proximity: pulsedlight: Fix rumtime PM imbalance on error
When lidar_write_control() fails, a pairing PM usage counter
decrement is needed to keep the counter balanced.
Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
---
drivers/iio/proximity/pulsedlight-lidar-lite-v2.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
index c685f10b5ae4..cc206bfa09c7 100644
--- a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
+++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
@@ -160,6 +160,7 @@ static int lidar_get_measurement(struct lidar_data *data, u16 *reg)
ret = lidar_write_control(data, LIDAR_REG_CONTROL_ACQUIRE);
if (ret < 0) {
dev_err(&client->dev, "cannot send start measurement command");
+ pm_runtime_put_noidle(&client->dev);
return ret;
}
--
2.17.1
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