Release 4.7 drivers/staging/dgnc/dgnc_driver.c

/*
 * Copyright 2003 Digi International (www.digi.com)
 *      Scott H Kilau <Scott_Kilau at digi dot com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE.  See the GNU General Public License for more details.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/sched.h>
#include "dgnc_driver.h"
#include "dgnc_pci.h"
#include "dgnc_mgmt.h"
#include "dgnc_tty.h"
#include "dgnc_cls.h"
#include "dgnc_neo.h"
#include "dgnc_sysfs.h"

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Digi International, http://www.digi.com");
MODULE_DESCRIPTION("Driver for the Digi International Neo and Classic PCI based product line");
MODULE_SUPPORTED_DEVICE("dgnc");

/**************************************************************************
 *
 * protos for this file
 *
 */
static int		dgnc_start(void);
static int		dgnc_finalize_board_init(struct dgnc_board *brd);
static int		dgnc_found_board(struct pci_dev *pdev, int id);
static void		dgnc_cleanup_board(struct dgnc_board *brd);
static void		dgnc_poll_handler(ulong dummy);
static int		dgnc_init_one(struct pci_dev *pdev,
				      const struct pci_device_id *ent);
static void		dgnc_do_remap(struct dgnc_board *brd);

/*
 * File operations permitted on Control/Management major.
 */

static const struct file_operations dgnc_board_fops = {
	.owner		=	THIS_MODULE,
	.unlocked_ioctl =	dgnc_mgmt_ioctl,
	.open		=	dgnc_mgmt_open,
	.release	=	dgnc_mgmt_close
};

/*
 * Globals
 */

uint			dgnc_num_boards;

struct dgnc_board		*dgnc_board[MAXBOARDS];

DEFINE_SPINLOCK(dgnc_global_lock);

DEFINE_SPINLOCK(dgnc_poll_lock); 
/* Poll scheduling lock */

uint			dgnc_major;

int			dgnc_poll_tick = 20;	
/* Poll interval - 20 ms */

/*
 * Static vars.
 */

static struct class *dgnc_class;

/*
 * Poller stuff
 */

static ulong		dgnc_poll_time; 
/* Time of next poll */

static uint		dgnc_poll_stop; 
/* Used to tell poller to stop */

static struct timer_list dgnc_poll_timer;


static const struct pci_device_id dgnc_pci_tbl[] = {
	{PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_4_DID),     .driver_data = 0},
	{PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_4_422_DID), .driver_data = 1},
	{PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_8_DID),     .driver_data = 2},
	{PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_8_422_DID), .driver_data = 3},
	{0,}
};
MODULE_DEVICE_TABLE(pci, dgnc_pci_tbl);


struct board_id {
	
unsigned char *name;
	
uint maxports;
	
unsigned int is_pci_express;
};


static struct board_id dgnc_ids[] = {
	{	PCI_DEVICE_CLASSIC_4_PCI_NAME,		4,	0	},
	{	PCI_DEVICE_CLASSIC_4_422_PCI_NAME,	4,	0	},
	{	PCI_DEVICE_CLASSIC_8_PCI_NAME,		8,	0	},
	{	PCI_DEVICE_CLASSIC_8_422_PCI_NAME,	8,	0	},
	{	PCI_DEVICE_NEO_4_PCI_NAME,		4,	0	},
	{	PCI_DEVICE_NEO_8_PCI_NAME,		8,	0	},
	{	PCI_DEVICE_NEO_2DB9_PCI_NAME,		2,	0	},
	{	PCI_DEVICE_NEO_2DB9PRI_PCI_NAME,	2,	0	},
	{	PCI_DEVICE_NEO_2RJ45_PCI_NAME,		2,	0	},
	{	PCI_DEVICE_NEO_2RJ45PRI_PCI_NAME,	2,	0	},
	{	PCI_DEVICE_NEO_1_422_PCI_NAME,		1,	0	},
	{	PCI_DEVICE_NEO_1_422_485_PCI_NAME,	1,	0	},
	{	PCI_DEVICE_NEO_2_422_485_PCI_NAME,	2,	0	},
	{	PCI_DEVICE_NEO_EXPRESS_8_PCI_NAME,	8,	1	},
	{	PCI_DEVICE_NEO_EXPRESS_4_PCI_NAME,	4,	1	},
	{	PCI_DEVICE_NEO_EXPRESS_4RJ45_PCI_NAME,	4,	1	},
	{	PCI_DEVICE_NEO_EXPRESS_8RJ45_PCI_NAME,	8,	1	},
	{	NULL,					0,	0	}
};


static struct pci_driver dgnc_driver = {
	.name		= "dgnc",
	.probe		= dgnc_init_one,
	.id_table       = dgnc_pci_tbl,
};

/************************************************************************
 *
 * Driver load/unload functions
 *
 ************************************************************************/



static void cleanup(bool sysfiles)
{
	int i;
	unsigned long flags;

	spin_lock_irqsave(&dgnc_poll_lock, flags);
	dgnc_poll_stop = 1;
	spin_unlock_irqrestore(&dgnc_poll_lock, flags);

	/* Turn off poller right away. */
	del_timer_sync(&dgnc_poll_timer);

	if (sysfiles)
		dgnc_remove_driver_sysfiles(&dgnc_driver);

	device_destroy(dgnc_class, MKDEV(dgnc_major, 0));
	class_destroy(dgnc_class);
	unregister_chrdev(dgnc_major, "dgnc");

	for (i = 0; i < dgnc_num_boards; ++i) {
		dgnc_remove_ports_sysfiles(dgnc_board[i]);
		dgnc_tty_uninit(dgnc_board[i]);
		dgnc_cleanup_board(dgnc_board[i]);
	}

	dgnc_tty_post_uninit();
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
konrad zapalowicz
konrad zapalowicz
96
80.67%
1
25.00%
roberta dobrescu
roberta dobrescu
9
7.56%
1
25.00%
sudip mukherjee
sudip mukherjee
8
6.72%
1
25.00%
daeseok youn
daeseok youn
6
5.04%
1
25.00%
Total
119
100.00%
4
100.00%

/*
 * dgnc_cleanup_module()
 *
 * Module unload.  This is where it all ends.
 */


static void dgnc_cleanup_module(void)
{
	cleanup(true);
	pci_unregister_driver(&dgnc_driver);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
sudip mukherjee
sudip mukherjee
12
63.16%
1
50.00%
konrad zapalowicz
konrad zapalowicz
7
36.84%
1
50.00%
Total
19
100.00%
2
100.00%

/*
 * init_module()
 *
 * Module load.  This is where it all starts.
 */


static int __init dgnc_init_module(void)
{
	int rc;

	/*
         * Initialize global stuff
         */
	rc = dgnc_start();

	if (rc < 0)
		return rc;

	/*
         * Find and configure all the cards
         */
	rc = pci_register_driver(&dgnc_driver);
	if (rc) {
		pr_warn("WARNING: dgnc driver load failed.  No Digi Neo or Classic boards found.\n");
		cleanup(false);
		return rc;
	}
	dgnc_create_driver_sysfiles(&dgnc_driver);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
lidza louina
lidza louina
48
75.00%
1
16.67%
sudip mukherjee
sudip mukherjee
8
12.50%
2
33.33%
konrad zapalowicz
konrad zapalowicz
7
10.94%
2
33.33%
himangi saraogi
himangi saraogi
1
1.56%
1
16.67%
Total
64
100.00%
6
100.00%


module_init(dgnc_init_module);

module_exit(dgnc_cleanup_module);

/*
 * Start of driver.
 */


static int dgnc_start(void)
{
	int rc = 0;
	unsigned long flags;
	struct device *dev;

	/* make sure timer is initialized before we do anything else */
	init_timer(&dgnc_poll_timer);

	/*
         * Register our base character device into the kernel.
         * This allows the download daemon to connect to the downld device
         * before any of the boards are init'ed.
         *
         * Register management/dpa devices
         */
	rc = register_chrdev(0, "dgnc", &dgnc_board_fops);
	if (rc < 0) {
		pr_err(DRVSTR ": Can't register dgnc driver device (%d)\n", rc);
		return rc;
	}
	dgnc_major = rc;

	dgnc_class = class_create(THIS_MODULE, "dgnc_mgmt");
	if (IS_ERR(dgnc_class)) {
		rc = PTR_ERR(dgnc_class);
		pr_err(DRVSTR ": Can't create dgnc_mgmt class (%d)\n", rc);
		goto failed_class;
	}

	dev = device_create(dgnc_class, NULL,
			    MKDEV(dgnc_major, 0),
			NULL, "dgnc_mgmt");
	if (IS_ERR(dev)) {
		rc = PTR_ERR(dev);
		pr_err(DRVSTR ": Can't create device (%d)\n", rc);
		goto failed_device;
	}

	/*
         * Init any global tty stuff.
         */
	rc = dgnc_tty_preinit();

	if (rc < 0) {
		pr_err(DRVSTR ": tty preinit - not enough memory (%d)\n", rc);
		goto failed_tty;
	}

	/* Start the poller */
	spin_lock_irqsave(&dgnc_poll_lock, flags);
	setup_timer(&dgnc_poll_timer, dgnc_poll_handler, 0);
	dgnc_poll_time = jiffies + dgnc_jiffies_from_ms(dgnc_poll_tick);
	dgnc_poll_timer.expires = dgnc_poll_time;
	spin_unlock_irqrestore(&dgnc_poll_lock, flags);

	add_timer(&dgnc_poll_timer);

	return 0;

failed_tty:
	device_destroy(dgnc_class, MKDEV(dgnc_major, 0));
failed_device:
	class_destroy(dgnc_class);
failed_class:
	unregister_chrdev(dgnc_major, "dgnc");
	return rc;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
lidza louina
lidza louina
130
50.58%
1
10.00%
alexey khoroshilov
alexey khoroshilov
95
36.96%
1
10.00%
roberta dobrescu
roberta dobrescu
12
4.67%
2
20.00%
sudip mukherjee
sudip mukherjee
6
2.33%
1
10.00%
daeseok youn
daeseok youn
5
1.95%
1
10.00%
aya mahfouz
aya mahfouz
4
1.56%
1
10.00%
konrad zapalowicz
konrad zapalowicz
3
1.17%
2
20.00%
salah triki
salah triki
2
0.78%
1
10.00%
Total
257
100.00%
10
100.00%

/* returns count (>= 0), or negative on error */


static int dgnc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	int rc;

	/* wake up and enable device */
	rc = pci_enable_device(pdev);

	if (rc)
		return -EIO;

	rc = dgnc_found_board(pdev, ent->driver_data);
	if (rc == 0)
		dgnc_num_boards++;

	return rc;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
lidza louina
lidza louina
55
93.22%
1
25.00%
sudip mukherjee
sudip mukherjee
2
3.39%
1
25.00%
daeseok youn
daeseok youn
1
1.69%
1
25.00%
konrad zapalowicz
konrad zapalowicz
1
1.69%
1
25.00%
Total
59
100.00%
4
100.00%

/*
 * dgnc_cleanup_board()
 *
 * Free all the memory associated with a board
 */


static void dgnc_cleanup_board(struct dgnc_board *brd)
{
	int i = 0;

	if (!brd || brd->magic != DGNC_BOARD_MAGIC)
		return;

	switch (brd->device) {
	case PCI_DEVICE_CLASSIC_4_DID:
	case PCI_DEVICE_CLASSIC_8_DID:
	case PCI_DEVICE_CLASSIC_4_422_DID:
	case PCI_DEVICE_CLASSIC_8_422_DID:

		/* Tell card not to interrupt anymore. */
		outb(0, brd->iobase + 0x4c);
		break;

	default:
		break;
	}

	if (brd->irq)
		free_irq(brd->irq, brd);

	tasklet_kill(&brd->helper_tasklet);

	if (brd->re_map_membase) {
		iounmap(brd->re_map_membase);
		brd->re_map_membase = NULL;
	}

	if (brd->msgbuf_head) {
		unsigned long flags;

		spin_lock_irqsave(&dgnc_global_lock, flags);
		brd->msgbuf = NULL;
		dev_dbg(&brd->pdev->dev, "%s\n", brd->msgbuf_head);
		kfree(brd->msgbuf_head);
		brd->msgbuf_head = NULL;
		spin_unlock_irqrestore(&dgnc_global_lock, flags);
	}

	/* Free all allocated channels structs */
	for (i = 0; i < MAXPORTS ; i++) {
		if (brd->channels[i]) {
			kfree(brd->channels[i]->ch_rqueue);
			kfree(brd->channels[i]->ch_equeue);
			kfree(brd->channels[i]->ch_wqueue);
			kfree(brd->channels[i]);
			brd->channels[i] = NULL;
		}
	}

	dgnc_board[brd->boardnum] = NULL;

	kfree(brd);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
lidza louina
lidza louina
251
94.36%
2
33.33%
cristina opriceana
cristina opriceana
9
3.38%
1
16.67%
roberta dobrescu
roberta dobrescu
4
1.50%
1
16.67%
kees cook
kees cook
1
0.38%
1
16.67%
daeseok youn
daeseok youn
1
0.38%
1
16.67%
Total
266
100.00%
6
100.00%

/*
 * dgnc_found_board()
 *
 * A board has been found, init it.
 */


static int dgnc_found_board(struct pci_dev *pdev, int id)
{
	struct dgnc_board *brd;
	unsigned int pci_irq;
	int i = 0;
	int rc = 0;
	unsigned long flags;

	/* get the board structure and prep it */
	dgnc_board[dgnc_num_boards] = kzalloc(sizeof(*brd), GFP_KERNEL);
	brd = dgnc_board[dgnc_num_boards];

	if (!brd)
		return -ENOMEM;

	/* make a temporary message buffer for the boot messages */
	brd->msgbuf_head = kcalloc(8192, sizeof(u8), GFP_KERNEL);
	brd->msgbuf = brd->msgbuf_head;

	if (!brd->msgbuf) {
		kfree(brd);
		return -ENOMEM;
	}

	/* store the info for the board we've found */
	brd->magic = DGNC_BOARD_MAGIC;
	brd->boardnum = dgnc_num_boards;
	brd->vendor = dgnc_pci_tbl[id].vendor;
	brd->device = dgnc_pci_tbl[id].device;
	brd->pdev = pdev;
	brd->pci_bus = pdev->bus->number;
	brd->pci_slot = PCI_SLOT(pdev->devfn);
	brd->name = dgnc_ids[id].name;
	brd->maxports = dgnc_ids[id].maxports;
	if (dgnc_ids[i].is_pci_express)
		brd->bd_flags |= BD_IS_PCI_EXPRESS;
	brd->dpastatus = BD_NOFEP;
	init_waitqueue_head(&brd->state_wait);

	spin_lock_init(&brd->bd_lock);
	spin_lock_init(&brd->bd_intr_lock);

	brd->state		= BOARD_FOUND;

	for (i = 0; i < MAXPORTS; i++)
		brd->channels[i] = NULL;

	/* store which card & revision we have */
	pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &brd->subvendor);
	pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &brd->subdevice);
	pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev);

	pci_irq = pdev->irq;
	brd->irq = pci_irq;

	switch (brd->device) {
	case PCI_DEVICE_CLASSIC_4_DID:
	case PCI_DEVICE_CLASSIC_8_DID:
	case PCI_DEVICE_CLASSIC_4_422_DID:
	case PCI_DEVICE_CLASSIC_8_422_DID:

		brd->dpatype = T_CLASSIC | T_PCIBUS;

		/*
                 * For PCI ClassicBoards
                 * PCI Local Address (i.e. "resource" number) space
                 * 0    PLX Memory Mapped Config
                 * 1    PLX I/O Mapped Config
                 * 2    I/O Mapped UARTs and Status
                 * 3    Memory Mapped VPD
                 * 4    Memory Mapped UARTs and Status
                 */

		/* get the PCI Base Address Registers */
		brd->membase = pci_resource_start(pdev, 4);

		if (!brd->membase) {
			dev_err(&brd->pdev->dev,
				"Card has no PCI IO resources, failing.\n");
			return -ENODEV;
		}

		brd->membase_end = pci_resource_end(pdev, 4);

		if (brd->membase & 1)
			brd->membase &= ~3;
		else
			brd->membase &= ~15;

		brd->iobase	= pci_resource_start(pdev, 1);
		brd->iobase_end = pci_resource_end(pdev, 1);
		brd->iobase	= ((unsigned int)(brd->iobase)) & 0xFFFE;

		/* Assign the board_ops struct */
		brd->bd_ops = &dgnc_cls_ops;

		brd->bd_uart_offset = 0x8;
		brd->bd_dividend = 921600;

		dgnc_do_remap(brd);

		/* Get and store the board VPD, if it exists */
		brd->bd_ops->vpd(brd);

		/*
                 * Enable Local Interrupt 1               (0x1),
                 * Local Interrupt 1 Polarity Active high (0x2),
                 * Enable PCI interrupt                   (0x40)
                 */
		outb(0x43, brd->iobase + 0x4c);

		break;

	case PCI_DEVICE_NEO_4_DID:
	case PCI_DEVICE_NEO_8_DID:
	case PCI_DEVICE_NEO_2DB9_DID:
	case PCI_DEVICE_NEO_2DB9PRI_DID:
	case PCI_DEVICE_NEO_2RJ45_DID:
	case PCI_DEVICE_NEO_2RJ45PRI_DID:
	case PCI_DEVICE_NEO_1_422_DID:
	case PCI_DEVICE_NEO_1_422_485_DID:
	case PCI_DEVICE_NEO_2_422_485_DID:
	case PCI_DEVICE_NEO_EXPRESS_8_DID:
	case PCI_DEVICE_NEO_EXPRESS_4_DID:
	case PCI_DEVICE_NEO_EXPRESS_4RJ45_DID:
	case PCI_DEVICE_NEO_EXPRESS_8RJ45_DID:

		/*
                 * This chip is set up 100% when we get to it.
                 * No need to enable global interrupts or anything.
                 */
		if (brd->bd_flags & BD_IS_PCI_EXPRESS)
			brd->dpatype = T_NEO_EXPRESS | T_PCIBUS;
		else
			brd->dpatype = T_NEO | T_PCIBUS;

		/* get the PCI Base Address Registers */
		brd->membase     = pci_resource_start(pdev, 0);
		brd->membase_end = pci_resource_end(pdev, 0);

		if (brd->membase & 1)
			brd->membase &= ~3;
		else
			brd->membase &= ~15;

		/* Assign the board_ops struct */
		brd->bd_ops = &dgnc_neo_ops;

		brd->bd_uart_offset = 0x200;
		brd->bd_dividend = 921600;

		dgnc_do_remap(brd);

		if (brd->re_map_membase) {
			/* Read and store the dvid after remapping */
			brd->dvid = readb(brd->re_map_membase + 0x8D);

			/* Get and store the board VPD, if it exists */
			brd->bd_ops->vpd(brd);
		}
		break;

	default:
		dev_err(&brd->pdev->dev,
			"Didn't find any compatible Neo/Classic PCI boards.\n");
		return -ENXIO;
	}

	/*
         * Do tty device initialization.
         */

	rc = dgnc_tty_register(brd);
	if (rc < 0) {
		pr_err(DRVSTR ": Can't register tty devices (%d)\n", rc);
		goto failed;
	}

	rc = dgnc_finalize_board_init(brd);
	if (rc < 0) {
		pr_err(DRVSTR ": Can't finalize board init (%d)\n", rc);
		goto failed;
	}

	rc = dgnc_tty_init(brd);
	if (rc < 0) {
		pr_err(DRVSTR ": Can't init tty devices (%d)\n", rc);
		goto failed;
	}

	brd->state = BOARD_READY;
	brd->dpastatus = BD_RUNNING;

	dgnc_create_ports_sysfiles(brd);

	/* init our poll helper tasklet */
	tasklet_init(&brd->helper_tasklet,
		     brd->bd_ops->tasklet,
		     (unsigned long)brd);

	spin_lock_irqsave(&dgnc_global_lock, flags);
	brd->msgbuf = NULL;
	dev_dbg(&brd->pdev->dev, "%s\n", brd->msgbuf_head);
	kfree(brd->msgbuf_head);
	brd->msgbuf_head = NULL;
	spin_unlock_irqrestore(&dgnc_global_lock, flags);

	wake_up_interruptible(&brd->state_wait);

	return 0;

failed:
	dgnc_tty_uninit(brd);
	brd->state = BOARD_FAILED;
	brd->dpastatus = BD_NOFEP;

	return -ENXIO;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
lidza louina
lidza louina
805
89.94%
6
40.00%
roberta dobrescu
roberta dobrescu
38
4.25%
2
13.33%
quentin lambert
quentin lambert
17
1.90%
1
6.67%
seunghun lee
seunghun lee
13
1.45%
1
6.67%
cristina opriceana
cristina opriceana
9
1.01%
1
6.67%
daeseok youn
daeseok youn
8
0.89%
1
6.67%
navya sri nizamkari
navya sri nizamkari
3
0.34%
1
6.67%
giedrius statkevicius
giedrius statkevicius
1
0.11%
1
6.67%
kees cook
kees cook
1
0.11%
1
6.67%
Total
895
100.00%
15
100.00%



static int dgnc_finalize_board_init(struct dgnc_board *brd)
{
	int rc = 0;

	if (!brd || brd->magic != DGNC_BOARD_MAGIC)
		return -ENODEV;

	if (brd->irq) {
		rc = request_irq(brd->irq, brd->bd_ops->intr,
				 IRQF_SHARED, "DGNC", brd);

		if (rc) {
			dev_err(&brd->pdev->dev,
				"Failed to hook IRQ %d\n", brd->irq);
			brd->state = BOARD_FAILED;
			brd->dpastatus = BD_NOFEP;
			rc = -ENODEV;
		}
	}
	return rc;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
lidza louina
lidza louina
94
92.16%
2
66.67%
antoine sirinelli
antoine sirinelli
8
7.84%
1
33.33%
Total
102
100.00%
3
100.00%

/*
 * Remap PCI memory.
 */


static void dgnc_do_remap(struct dgnc_board *brd)
{
	if (!brd || brd->magic != DGNC_BOARD_MAGIC)
		return;

	brd->re_map_membase = ioremap(brd->membase, 0x1000);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
lidza louina
lidza louina
36
100.00%
2
100.00%
Total
36
100.00%
2
100.00%

/*****************************************************************************
*
* Function:
*
*    dgnc_poll_handler
*
* Author:
*
*    Scott H Kilau
*
* Parameters:
*
*    dummy -- ignored
*
* Return Values:
*
*    none
*
* Description:
*
*    As each timer expires, it determines (a) whether the "transmit"
*    waiter needs to be woken up, and (b) whether the poller needs to
*    be rescheduled.
*
******************************************************************************/



static void dgnc_poll_handler(ulong dummy)
{
	struct dgnc_board *brd;
	unsigned long flags;
	int i;
	unsigned long new_time;

	/* Go thru each board, kicking off a tasklet for each if needed */
	for (i = 0; i < dgnc_num_boards; i++) {
		brd = dgnc_board[i];

		spin_lock_irqsave(&brd->bd_lock, flags);

		/* If board is in a failed state don't schedule a tasklet */
		if (brd->state == BOARD_FAILED) {
			spin_unlock_irqrestore(&brd->bd_lock, flags);
			continue;
		}

		/* Schedule a poll helper task */
		tasklet_schedule(&brd->helper_tasklet);

		spin_unlock_irqrestore(&brd->bd_lock, flags);
	}

	/*
         * Schedule ourself back at the nominal wakeup interval.
         */
	spin_lock_irqsave(&dgnc_poll_lock, flags);
	dgnc_poll_time += dgnc_jiffies_from_ms(dgnc_poll_tick);

	new_time = dgnc_poll_time - jiffies;

	if ((ulong)new_time >= 2 * dgnc_poll_tick)
		dgnc_poll_time = jiffies + dgnc_jiffies_from_ms(dgnc_poll_tick);

	setup_timer(&dgnc_poll_timer, dgnc_poll_handler, 0);
	dgnc_poll_timer.expires = dgnc_poll_time;
	spin_unlock_irqrestore(&dgnc_poll_lock, flags);

	if (!dgnc_poll_stop)
		add_timer(&dgnc_poll_timer);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
lidza louina
lidza louina
153
86.93%
2
33.33%
roberta dobrescu
roberta dobrescu
16
9.09%
1
16.67%
aya mahfouz
aya mahfouz
4
2.27%
1
16.67%
daeseok youn
daeseok youn
2
1.14%
1
16.67%
giedrius statkevicius
giedrius statkevicius
1
0.57%
1
16.67%
Total
176
100.00%
6
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
lidza louina
lidza louina
2016
80.80%
6
17.65%
konrad zapalowicz
konrad zapalowicz
124
4.97%
4
11.76%
alexey khoroshilov
alexey khoroshilov
95
3.81%
1
2.94%
roberta dobrescu
roberta dobrescu
79
3.17%
2
5.88%
sudip mukherjee
sudip mukherjee
37
1.48%
4
11.76%
krzysztof adamski
krzysztof adamski
29
1.16%
1
2.94%
daeseok youn
daeseok youn
28
1.12%
1
2.94%
cristina opriceana
cristina opriceana
18
0.72%
1
2.94%
quentin lambert
quentin lambert
17
0.68%
1
2.94%
seunghun lee
seunghun lee
13
0.52%
1
2.94%
aya mahfouz
aya mahfouz
8
0.32%
1
2.94%
salah triki
salah triki
8
0.32%
2
5.88%
antoine sirinelli
antoine sirinelli
8
0.32%
1
2.94%
navya sri nizamkari
navya sri nizamkari
3
0.12%
1
2.94%
giedrius statkevicius
giedrius statkevicius
3
0.12%
2
5.88%
tushar behera
tushar behera
3
0.12%
1
2.94%
kees cook
kees cook
2
0.08%
1
2.94%
ebru akagunduz
ebru akagunduz
2
0.08%
1
2.94%
himangi saraogi
himangi saraogi
1
0.04%
1
2.94%
monam agarwal
monam agarwal
1
0.04%
1
2.94%
Total
2495
100.00%
34
100.00%
  
Directory: drivers/staging/dgnc

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.