cregit-Linux how code gets into the kernel

Release 4.8 drivers/iio/pressure/st_pressure_buffer.c

/*
 * STMicroelectronics pressures driver
 *
 * Copyright 2013 STMicroelectronics Inc.
 *
 * Denis Ciocca <denis.ciocca@st.com>
 *
 * Licensed under the GPL-2.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/iio/iio.h>
#include <linux/iio/buffer.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/triggered_buffer.h>

#include <linux/iio/common/st_sensors.h>
#include "st_pressure.h"


int st_press_trig_set_state(struct iio_trigger *trig, bool state) { struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); return st_sensors_set_dataready_irq(indio_dev, state); }

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denis cioccadenis ciocca31100.00%1100.00%
Total31100.00%1100.00%


static int st_press_buffer_preenable(struct iio_dev *indio_dev) { return st_sensors_set_enable(indio_dev, true); }

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denis cioccadenis ciocca1894.74%150.00%
lars-peter clausenlars-peter clausen15.26%150.00%
Total19100.00%2100.00%


static int st_press_buffer_postenable(struct iio_dev *indio_dev) { int err; struct st_sensor_data *press_data = iio_priv(indio_dev); press_data->buffer_data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL); if (press_data->buffer_data == NULL) { err = -ENOMEM; goto allocate_memory_error; } err = iio_triggered_buffer_postenable(indio_dev); if (err < 0) goto st_press_buffer_postenable_error; return err; st_press_buffer_postenable_error: kfree(press_data->buffer_data); allocate_memory_error: return err; }

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denis cioccadenis ciocca88100.00%2100.00%
Total88100.00%2100.00%


static int st_press_buffer_predisable(struct iio_dev *indio_dev) { int err; struct st_sensor_data *press_data = iio_priv(indio_dev); err = iio_triggered_buffer_predisable(indio_dev); if (err < 0) goto st_press_buffer_predisable_error; err = st_sensors_set_enable(indio_dev, false); st_press_buffer_predisable_error: kfree(press_data->buffer_data); return err; }

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Total61100.00%2100.00%

static const struct iio_buffer_setup_ops st_press_buffer_setup_ops = { .preenable = &st_press_buffer_preenable, .postenable = &st_press_buffer_postenable, .predisable = &st_press_buffer_predisable, };
int st_press_allocate_ring(struct iio_dev *indio_dev) { return iio_triggered_buffer_setup(indio_dev, NULL, &st_sensors_trigger_handler, &st_press_buffer_setup_ops); }

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denis cioccadenis ciocca2395.83%150.00%
linus walleijlinus walleij14.17%150.00%
Total24100.00%2100.00%


void st_press_deallocate_ring(struct iio_dev *indio_dev) { iio_triggered_buffer_cleanup(indio_dev); }

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MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); MODULE_DESCRIPTION("STMicroelectronics pressures buffer"); MODULE_LICENSE("GPL v2");

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denis cioccadenis ciocca31799.37%250.00%
lars-peter clausenlars-peter clausen10.31%125.00%
linus walleijlinus walleij10.31%125.00%
Total319100.00%4100.00%
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