Input: tca8418_keypad - use a temporary variable for parent device

Use a temporary variable for our parent device (coming from I2C client
structure); we'll be also using it during conversion to managed resources.

Reviewed-by: Alban Bedel <alban.bedel@avionic-design.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/keyboard/tca8418_keypad.c

@@ -281,6 +281,7 @@ static int tca8418_configure(struct tca8418_keypad *keypad_data,
 static int tca8418_keypad_probe(struct i2c_client *client,
 					  const struct i2c_device_id *id)
 {
+	struct device *dev = &client->dev;
 	const struct tca8418_keypad_platform_data *pdata =
 						client->dev.platform_data;
 	struct tca8418_keypad *keypad_data;
@@ -294,7 +295,7 @@ static int tca8418_keypad_probe(struct i2c_client *client,
 	/* Copy the platform data */
 	if (pdata) {
 		if (!pdata->keymap_data) {
-			dev_err(&client->dev, "no keymap data defined\n");
+			dev_err(dev, "no keymap data defined\n");
 			return -EINVAL;
 		}
 		keymap_data = pdata->keymap_data;
@@ -303,25 +304,25 @@ static int tca8418_keypad_probe(struct i2c_client *client,
 		rep  = pdata->rep;
 		irq_is_gpio = pdata->irq_is_gpio;
 	} else {
-		struct device_node *np = client->dev.of_node;
+		struct device_node *np = dev->of_node;
 		of_property_read_u32(np, "keypad,num-rows", &rows);
 		of_property_read_u32(np, "keypad,num-columns", &cols);
 		rep = of_property_read_bool(np, "keypad,autorepeat");
 	}
 
 	if (!rows || rows > TCA8418_MAX_ROWS) {
-		dev_err(&client->dev, "invalid rows\n");
+		dev_err(dev, "invalid rows\n");
 		return -EINVAL;
 	}
 
 	if (!cols || cols > TCA8418_MAX_COLS) {
-		dev_err(&client->dev, "invalid columns\n");
+		dev_err(dev, "invalid columns\n");
 		return -EINVAL;
 	}
 
 	/* Check i2c driver capabilities */
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE)) {
-		dev_err(&client->dev, "%s adapter not supported\n",
+		dev_err(dev, "%s adapter not supported\n",
 			dev_driver_string(&client->adapter->dev));
 		return -ENODEV;
 	}
@@ -362,7 +363,7 @@ static int tca8418_keypad_probe(struct i2c_client *client,
 	error = matrix_keypad_build_keymap(keymap_data, NULL, rows, cols,
 					   keypad_data->keymap, input);
 	if (error) {
-		dev_dbg(&client->dev, "Failed to build keymap\n");
+		dev_dbg(dev, "Failed to build keymap\n");
 		goto fail2;
 	}
 
@@ -381,16 +382,15 @@ static int tca8418_keypad_probe(struct i2c_client *client,
 				     IRQF_ONESHOT,
 				     client->name, keypad_data);
 	if (error) {
-		dev_dbg(&client->dev,
-			"Unable to claim irq %d; error %d\n",
+		dev_dbg(dev, "Unable to claim irq %d; error %d\n",
 			client->irq, error);
 		goto fail2;
 	}
 
 	error = input_register_device(input);
 	if (error) {
-		dev_dbg(&client->dev,
-			"Unable to register input device, error: %d\n", error);
+		dev_dbg(dev, "Unable to register input device, error: %d\n",
+			error);
 		goto fail3;
 	}