modify sin led gpio

hc

2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e

 kernel/drivers/iio/dac/max517.c
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@@ -1,21 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *  max517.c - Support for Maxim MAX517, MAX518 and MAX519
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  *
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  *  Copyright (C) 2010, 2011 Roland Stigge <stigge@antcom.de>
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- *
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- *  This program is free software; you can redistribute it and/or modify
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- *  it under the terms of the GNU General Public License as published by
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- *  the Free Software Foundation; either version 2 of the License, or
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- *  (at your option) any later version.
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- *
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- *  This program is distributed in the hope that it will be useful,
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- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- *  GNU General Public License for more details.
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- *
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- *  You should have received a copy of the GNU General Public License
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- *  along with this program; if not, write to the Free Software
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- *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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  */
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 #include <linux/module.h>
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@@ -113,15 +100,14 @@
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 	return ret;
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 }
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-#ifdef CONFIG_PM_SLEEP
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-static int max517_suspend(struct device *dev)
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+static int __maybe_unused max517_suspend(struct device *dev)
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 {
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 	u8 outbuf = COMMAND_PD;
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 	return i2c_master_send(to_i2c_client(dev), &outbuf, 1);
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 }
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-static int max517_resume(struct device *dev)
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+static int __maybe_unused max517_resume(struct device *dev)
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 {
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 	u8 outbuf = 0;
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@@ -129,10 +115,6 @@
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 }
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 static SIMPLE_DEV_PM_OPS(max517_pm_ops, max517_suspend, max517_resume);
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-#define MAX517_PM_OPS (&max517_pm_ops)
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-#else
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-#define MAX517_PM_OPS NULL
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-#endif
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 static const struct iio_info max517_info = {
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 	.read_raw = max517_read_raw,
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@@ -173,9 +155,6 @@
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 	data = iio_priv(indio_dev);
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 	i2c_set_clientdata(client, indio_dev);
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 	data->client = client;
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-
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-	/* establish that the iio_dev is a child of the i2c device */
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-	indio_dev->dev.parent = &client->dev;
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 	switch (id->driver_data) {
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 	case ID_MAX521:
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@@ -229,7 +208,7 @@
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 static struct i2c_driver max517_driver = {
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 	.driver = {
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 		.name	= MAX517_DRV_NAME,
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-		.pm		= MAX517_PM_OPS,
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+		.pm	= &max517_pm_ops,
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 	},
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 	.probe		= max517_probe,
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 	.remove		= max517_remove,