Input: st1232 - rely on I2C core to configure wakeup interrupt

When I2C client is created with I2C_CLIENT_WAKE flag (which happens
either because we have "wakeup-source" device property or the flag
was passed in when creating an I2C client manually), I2C core will
take care of configuring interrupt as wakeup source on suspend.
Tested-by: Matthias Fend <Matthias.Fend@wolfvision.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/st1232.c

@@ -284,12 +284,10 @@ static int __maybe_unused st1232_ts_suspend(struct device *dev)
 	struct i2c_client *client = to_i2c_client(dev);
 	struct st1232_ts_data *ts = i2c_get_clientdata(client);
 
-	if (device_may_wakeup(&client->dev)) {
-		enable_irq_wake(client->irq);
-	} else {
 	disable_irq(client->irq);
+
+	if (!device_may_wakeup(&client->dev))
 		st1232_ts_power(ts, false);
-	}
 
 	return 0;
 }
@@ -299,12 +297,10 @@ static int __maybe_unused st1232_ts_resume(struct device *dev)
 	struct i2c_client *client = to_i2c_client(dev);
 	struct st1232_ts_data *ts = i2c_get_clientdata(client);
 
-	if (device_may_wakeup(&client->dev)) {
-		disable_irq_wake(client->irq);
-	} else {
+	if (!device_may_wakeup(&client->dev))
 		st1232_ts_power(ts, true);
+
 	enable_irq(client->irq);
-	}
 
 	return 0;
 }