add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/iio/light/hid-sensor-als.c
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..
@@ -1,20 +1,7 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * HID Sensors Driver
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  * Copyright (c) 2012, Intel Corporation.
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms and conditions of the GNU General Public License,
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- * version 2, as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope it will be useful, but WITHOUT
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- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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- * more details.
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- *
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- * You should have received a copy of the GNU General Public License along with
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- * this program; if not, write to the Free Software Foundation, Inc.,
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- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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- *
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  */
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 #include <linux/device.h>
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 #include <linux/platform_device.h>
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..
@@ -27,8 +14,6 @@
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 #include <linux/iio/iio.h>
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 #include <linux/iio/sysfs.h>
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 #include <linux/iio/buffer.h>
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-#include <linux/iio/trigger_consumer.h>
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-#include <linux/iio/triggered_buffer.h>
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 #include "../common/hid-sensors/hid-sensor-trigger.h"
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 enum {
..
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@@ -316,23 +301,17 @@
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 	indio_dev->num_channels =
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 				ARRAY_SIZE(als_channels);
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-	indio_dev->dev.parent = &pdev->dev;
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 	indio_dev->info = &als_info;
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 	indio_dev->name = name;
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 	indio_dev->modes = INDIO_DIRECT_MODE;
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-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
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-		NULL, NULL);
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-	if (ret) {
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-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
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-		goto error_free_dev_mem;
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-	}
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 	atomic_set(&als_state->common_attributes.data_ready, 0);
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+
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 	ret = hid_sensor_setup_trigger(indio_dev, name,
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 				&als_state->common_attributes);
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 	if (ret < 0) {
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 		dev_err(&pdev->dev, "trigger setup failed\n");
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-		goto error_unreg_buffer_funcs;
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+		goto error_free_dev_mem;
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 	}
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 	ret = iio_device_register(indio_dev);
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@@ -356,9 +335,7 @@
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 error_iio_unreg:
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 	iio_device_unregister(indio_dev);
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 error_remove_trigger:
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-	hid_sensor_remove_trigger(&als_state->common_attributes);
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-error_unreg_buffer_funcs:
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-	iio_triggered_buffer_cleanup(indio_dev);
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+	hid_sensor_remove_trigger(indio_dev, &als_state->common_attributes);
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 error_free_dev_mem:
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 	kfree(indio_dev->channels);
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 	return ret;
..
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@@ -373,8 +350,7 @@
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 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_ALS);
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 	iio_device_unregister(indio_dev);
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-	hid_sensor_remove_trigger(&als_state->common_attributes);
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-	iio_triggered_buffer_cleanup(indio_dev);
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+	hid_sensor_remove_trigger(indio_dev, &als_state->common_attributes);
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 	kfree(indio_dev->channels);
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 	return 0;