From: Qinglang Miao Date: Tue, 1 Dec 2020 09:31:41 +0000 (+0800) Subject: i2c: imx: fix reference leak when pm_runtime_get_sync fails X-Git-Tag: v5.10.79~4728 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3a0cdd336d92c429b51a79bf4f64b17eafa0325d;p=platform%2Fkernel%2Flinux-rpi.git i2c: imx: fix reference leak when pm_runtime_get_sync fails [ Upstream commit 47ff617217ca6a13194fcb35c6c3a0c57c080693 ] In i2c_imx_xfer() and i2c_imx_remove(), the pm reference count is not expected to be incremented on return. However, pm_runtime_get_sync will increment pm reference count even failed. Forgetting to putting operation will result in a reference leak here. Replace it with pm_runtime_resume_and_get to keep usage counter balanced. Fixes: 3a5ee18d2a32 ("i2c: imx: implement master_xfer_atomic callback") Reported-by: Hulk Robot Signed-off-by: Qinglang Miao Reviewed-by: Oleksij Rempel Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c index e6f8d6e..72af4b4 100644 --- a/drivers/i2c/busses/i2c-imx.c +++ b/drivers/i2c/busses/i2c-imx.c @@ -1036,7 +1036,7 @@ static int i2c_imx_xfer(struct i2c_adapter *adapter, struct imx_i2c_struct *i2c_imx = i2c_get_adapdata(adapter); int result; - result = pm_runtime_get_sync(i2c_imx->adapter.dev.parent); + result = pm_runtime_resume_and_get(i2c_imx->adapter.dev.parent); if (result < 0) return result; @@ -1280,7 +1280,7 @@ static int i2c_imx_remove(struct platform_device *pdev) struct imx_i2c_struct *i2c_imx = platform_get_drvdata(pdev); int irq, ret; - ret = pm_runtime_get_sync(&pdev->dev); + ret = pm_runtime_resume_and_get(&pdev->dev); if (ret < 0) return ret;