i2c: busses: Use dev_get_drvdata where possible

Instead of using to_pci_dev + pci_get_drvdata,
use dev_get_drvdata to make code simpler.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-designware-pcidrv.c

@@ -173,8 +173,7 @@ static struct dw_pci_controller dw_pci_controllers[] = {
 #ifdef CONFIG_PM
 static int i2c_dw_pci_suspend(struct device *dev)
 {
-	struct pci_dev *pdev = to_pci_dev(dev);
-	struct dw_i2c_dev *i_dev = pci_get_drvdata(pdev);
+	struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
 
 	i_dev->suspended = true;
 	i_dev->disable(i_dev);
@@ -184,8 +183,7 @@ static int i2c_dw_pci_suspend(struct device *dev)
 
 static int i2c_dw_pci_resume(struct device *dev)
 {
-	struct pci_dev *pdev = to_pci_dev(dev);
-	struct dw_i2c_dev *i_dev = pci_get_drvdata(pdev);
+	struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
 	int ret;
 
 	ret = i_dev->init(i_dev);

drivers/i2c/busses/i2c-i801.c

@@ -1912,8 +1912,7 @@ static int i801_suspend(struct device *dev)
 
 static int i801_resume(struct device *dev)
 {
-	struct pci_dev *pci_dev = to_pci_dev(dev);
-	struct i801_priv *priv = pci_get_drvdata(pci_dev);
+	struct i801_priv *priv = dev_get_drvdata(dev);
 
 	i801_enable_host_notify(&priv->adapter);