iio: dac: max5821: avoid using CONFIG_PM_SLEEP

This is already handled by SIMPLE_DEV_PM_OPS().
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/dac/max5821.c

@@ -270,8 +270,7 @@ static int max5821_write_raw(struct iio_dev *indio_dev,
 	}
 }
 
-#ifdef CONFIG_PM_SLEEP
-static int max5821_suspend(struct device *dev)
+static int __maybe_unused max5821_suspend(struct device *dev)
 {
 	u8 outbuf[2] = { MAX5821_EXTENDED_COMMAND_MODE,
 			 MAX5821_EXTENDED_DAC_A |
@@ -281,7 +280,7 @@ static int max5821_suspend(struct device *dev)
 	return i2c_master_send(to_i2c_client(dev), outbuf, 2);
 }
 
-static int max5821_resume(struct device *dev)
+static int __maybe_unused max5821_resume(struct device *dev)
 {
 	u8 outbuf[2] = { MAX5821_EXTENDED_COMMAND_MODE,
 			 MAX5821_EXTENDED_DAC_A |
@@ -292,10 +291,6 @@ static int max5821_resume(struct device *dev)
 }
 
 static SIMPLE_DEV_PM_OPS(max5821_pm_ops, max5821_suspend, max5821_resume);
-#define MAX5821_PM_OPS (&max5821_pm_ops)
-#else
-#define MAX5821_PM_OPS NULL
-#endif /* CONFIG_PM_SLEEP */
 
 static const struct iio_info max5821_info = {
 	.read_raw = max5821_read_raw,
@@ -392,7 +387,7 @@ static struct i2c_driver max5821_driver = {
 	.driver = {
 		.name	= "max5821",
 		.of_match_table = max5821_of_match,
-		.pm     = MAX5821_PM_OPS,
+		.pm     = &max5821_pm_ops,
 	},
 	.probe		= max5821_probe,
 	.remove		= max5821_remove,