i2c: st: use to_platform_device()

Use to_platform_device() instead of open-coding it.

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

diff --git a/drivers/i2c/busses/i2c-st.c b/drivers/i2c/busses/i2c-st.c
index ea72dca32fdfde83cfdd223525a915a5721d6816..2c3ad8eea1d5392d89ab326d6ef1389a764ed7a7 100644 (file)
--- a/drivers/i2c/busses/i2c-st.c
+++ b/drivers/i2c/busses/i2c-st.c
@@ -708,8 +708,7 @@ static int st_i2c_xfer(struct i2c_adapter *i2c_adap,
 #ifdef CONFIG_PM_SLEEP
 static int st_i2c_suspend(struct device *dev)
 {
-       struct platform_device *pdev =
-               container_of(dev, struct platform_device, dev);
+       struct platform_device *pdev = to_platform_device(dev);
        struct st_i2c_dev *i2c_dev = platform_get_drvdata(pdev);
 
        if (i2c_dev->busy)