staging: dgnc: remove sysfs files

The dgnc driver has no business creating "custom" sysfs files just for a
single tty driver.  Combined with the odd way they are created, it's
just a mess, so remove them entirely as I am tired of tripping over them
when doing driver core changes.

Cc: Lidza Louina <lidza.louina@gmail.com>
Cc: Mark Hounschell <markh@compro.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

6 files changed, 8 insertions, 770 deletions

diff --git a/drivers/staging/dgnc/Makefile b/drivers/staging/dgnc/Makefile
index 995c874f40eb..40ff0d007695 100644
--- a/drivers/staging/dgnc/Makefile
+++ b/drivers/staging/dgnc/Makefile
@@ -2,5 +2,4 @@ obj-$(CONFIG_DGNC) += dgnc.o
 
 dgnc-objs :=   dgnc_cls.o dgnc_driver.o\
                dgnc_mgmt.o dgnc_neo.o\
-               dgnc_tty.o dgnc_sysfs.o\
-	       dgnc_utils.o
+               dgnc_tty.o dgnc_utils.o
diff --git a/drivers/staging/dgnc/dgnc_driver.c b/drivers/staging/dgnc/dgnc_driver.c
index 91c9047de122..5381dbddd8bb 100644
--- a/drivers/staging/dgnc/dgnc_driver.c
+++ b/drivers/staging/dgnc/dgnc_driver.c
@@ -24,7 +24,6 @@
 #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");
@@ -419,8 +418,6 @@ static int dgnc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	brd->state = BOARD_READY;
 	brd->dpastatus = BD_RUNNING;
 
-	dgnc_create_ports_sysfiles(brd);
-
 	dgnc_board[dgnc_num_boards++] = brd;
 
 	return 0;
@@ -555,7 +552,7 @@ static void dgnc_cleanup_board(struct dgnc_board *brd)
 
 /* Driver load/unload functions */
 
-static void cleanup(bool sysfiles)
+static void cleanup(void)
 {
 	int i;
 	unsigned long flags;
@@ -567,15 +564,11 @@ static void cleanup(bool sysfiles)
 	/* 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_cleanup_tty(dgnc_board[i]);
 		dgnc_cleanup_board(dgnc_board[i]);
 	}
@@ -588,7 +581,7 @@ static void cleanup(bool sysfiles)
  */
 static void __exit dgnc_cleanup_module(void)
 {
-	cleanup(true);
+	cleanup();
 	pci_unregister_driver(&dgnc_driver);
 }
 
@@ -613,10 +606,9 @@ static int __init dgnc_init_module(void)
 	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);
+		cleanup();
 		return rc;
 	}
-	dgnc_create_driver_sysfiles(&dgnc_driver);
 
 	return 0;
 }
diff --git a/drivers/staging/dgnc/dgnc_driver.h b/drivers/staging/dgnc/dgnc_driver.h
index 63b50bfe9ab3..c8119f2fe881 100644
--- a/drivers/staging/dgnc/dgnc_driver.h
+++ b/drivers/staging/dgnc/dgnc_driver.h
@@ -23,7 +23,6 @@
 #include <linux/interrupt.h>
 
 #include "digi.h"		/* Digi specific ioctl header */
-#include "dgnc_sysfs.h"		/* Support for SYSFS */
 
 /* Driver defines */
 
diff --git a/drivers/staging/dgnc/dgnc_sysfs.c b/drivers/staging/dgnc/dgnc_sysfs.c
deleted file mode 100644
index d41517c41bb3..000000000000
--- a/drivers/staging/dgnc/dgnc_sysfs.c
+++ /dev/null
@@ -1,703 +0,0 @@
-/*
- * Copyright 2004 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/ctype.h>
-#include <linux/string.h>
-#include <linux/serial_reg.h>
-#include <linux/device.h>
-#include <linux/pci.h>
-#include <linux/kdev_t.h>
-
-#include "dgnc_driver.h"
-#include "dgnc_mgmt.h"
-
-static ssize_t version_show(struct device_driver *ddp, char *buf)
-{
-	return snprintf(buf, PAGE_SIZE, "%s\n", DG_PART);
-}
-static DRIVER_ATTR_RO(version);
-
-static ssize_t boards_show(struct device_driver *ddp, char *buf)
-{
-	return snprintf(buf, PAGE_SIZE, "%d\n", dgnc_num_boards);
-}
-static DRIVER_ATTR_RO(boards);
-
-static ssize_t maxboards_show(struct device_driver *ddp, char *buf)
-{
-	return snprintf(buf, PAGE_SIZE, "%d\n", MAXBOARDS);
-}
-static DRIVER_ATTR_RO(maxboards);
-
-static ssize_t pollrate_show(struct device_driver *ddp, char *buf)
-{
-	return snprintf(buf, PAGE_SIZE, "%dms\n", dgnc_poll_tick);
-}
-
-static ssize_t pollrate_store(struct device_driver *ddp,
-			      const char *buf, size_t count)
-{
-	unsigned long flags;
-	int tick;
-	int ret;
-
-	ret = sscanf(buf, "%d\n", &tick);
-	if (ret != 1)
-		return -EINVAL;
-
-	spin_lock_irqsave(&dgnc_poll_lock, flags);
-	dgnc_poll_tick = tick;
-	spin_unlock_irqrestore(&dgnc_poll_lock, flags);
-
-	return count;
-}
-static DRIVER_ATTR_RW(pollrate);
-
-void dgnc_create_driver_sysfiles(struct pci_driver *dgnc_driver)
-{
-	int rc = 0;
-	struct device_driver *driverfs = &dgnc_driver->driver;
-
-	rc |= driver_create_file(driverfs, &driver_attr_version);
-	rc |= driver_create_file(driverfs, &driver_attr_boards);
-	rc |= driver_create_file(driverfs, &driver_attr_maxboards);
-	rc |= driver_create_file(driverfs, &driver_attr_pollrate);
-	if (rc)
-		pr_err("DGNC: sysfs driver_create_file failed!\n");
-}
-
-void dgnc_remove_driver_sysfiles(struct pci_driver *dgnc_driver)
-{
-	struct device_driver *driverfs = &dgnc_driver->driver;
-
-	driver_remove_file(driverfs, &driver_attr_version);
-	driver_remove_file(driverfs, &driver_attr_boards);
-	driver_remove_file(driverfs, &driver_attr_maxboards);
-	driver_remove_file(driverfs, &driver_attr_pollrate);
-}
-
-#define DGNC_VERIFY_BOARD(p, bd)				\
-	do {							\
-		if (!p)						\
-			return 0;				\
-								\
-		bd = dev_get_drvdata(p);			\
-		if (!bd || bd->magic != DGNC_BOARD_MAGIC)	\
-			return 0;				\
-		if (bd->state != BOARD_READY)			\
-			return 0;				\
-	} while (0)
-
-static ssize_t vpd_show(struct device *p, struct device_attribute *attr,
-			char *buf)
-{
-	struct dgnc_board *bd;
-	int count = 0;
-	int i = 0;
-
-	DGNC_VERIFY_BOARD(p, bd);
-
-	count += sprintf(buf + count,
-		"\n      0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F");
-	for (i = 0; i < 0x40 * 2; i++) {
-		if (!(i % 16))
-			count += sprintf(buf + count, "\n%04X ", i * 2);
-		count += sprintf(buf + count, "%02X ", bd->vpd[i]);
-	}
-	count += sprintf(buf + count, "\n");
-
-	return count;
-}
-static DEVICE_ATTR_RO(vpd);
-
-static ssize_t serial_number_show(struct device *p,
-				  struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	int count = 0;
-
-	DGNC_VERIFY_BOARD(p, bd);
-
-	if (bd->serial_num[0] == '\0')
-		count += sprintf(buf + count, "<UNKNOWN>\n");
-	else
-		count += sprintf(buf + count, "%s\n", bd->serial_num);
-
-	return count;
-}
-static DEVICE_ATTR_RO(serial_number);
-
-static ssize_t ports_state_show(struct device *p,
-				struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	int count = 0;
-	int i = 0;
-
-	DGNC_VERIFY_BOARD(p, bd);
-
-	for (i = 0; i < bd->nasync; i++) {
-		count += snprintf(buf + count, PAGE_SIZE - count,
-			"%d %s\n", bd->channels[i]->ch_portnum,
-			bd->channels[i]->ch_open_count ? "Open" : "Closed");
-	}
-	return count;
-}
-static DEVICE_ATTR_RO(ports_state);
-
-static ssize_t ports_baud_show(struct device *p,
-			       struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	int count = 0;
-	int i = 0;
-
-	DGNC_VERIFY_BOARD(p, bd);
-
-	for (i = 0; i < bd->nasync; i++) {
-		count +=  snprintf(buf + count, PAGE_SIZE - count,
-			"%d %d\n", bd->channels[i]->ch_portnum,
-			bd->channels[i]->ch_old_baud);
-	}
-	return count;
-}
-static DEVICE_ATTR_RO(ports_baud);
-
-static ssize_t ports_msignals_show(struct device *p,
-				   struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	int count = 0;
-	int i = 0;
-
-	DGNC_VERIFY_BOARD(p, bd);
-
-	for (i = 0; i < bd->nasync; i++) {
-		struct channel_t *ch = bd->channels[i];
-
-		if (ch->ch_open_count) {
-			count += snprintf(buf + count, PAGE_SIZE - count,
-				"%d %s %s %s %s %s %s\n",
-				ch->ch_portnum,
-				(ch->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
-				(ch->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
-				(ch->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
-				(ch->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
-				(ch->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
-				(ch->ch_mistat & UART_MSR_RI)  ? "RI"  : "");
-		} else {
-			count += snprintf(buf + count, PAGE_SIZE - count,
-				"%d\n", ch->ch_portnum);
-		}
-	}
-	return count;
-}
-static DEVICE_ATTR_RO(ports_msignals);
-
-static ssize_t ports_iflag_show(struct device *p,
-				struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	int count = 0;
-	int i = 0;
-
-	DGNC_VERIFY_BOARD(p, bd);
-
-	for (i = 0; i < bd->nasync; i++) {
-		count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
-			bd->channels[i]->ch_portnum,
-			bd->channels[i]->ch_c_iflag);
-	}
-	return count;
-}
-static DEVICE_ATTR_RO(ports_iflag);
-
-static ssize_t ports_cflag_show(struct device *p,
-				struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	int count = 0;
-	int i = 0;
-
-	DGNC_VERIFY_BOARD(p, bd);
-
-	for (i = 0; i < bd->nasync; i++) {
-		count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
-			bd->channels[i]->ch_portnum,
-			bd->channels[i]->ch_c_cflag);
-	}
-	return count;
-}
-static DEVICE_ATTR_RO(ports_cflag);
-
-static ssize_t ports_oflag_show(struct device *p,
-				struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	int count = 0;
-	int i = 0;
-
-	DGNC_VERIFY_BOARD(p, bd);
-
-	for (i = 0; i < bd->nasync; i++) {
-		count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
-			bd->channels[i]->ch_portnum,
-			bd->channels[i]->ch_c_oflag);
-	}
-	return count;
-}
-static DEVICE_ATTR_RO(ports_oflag);
-
-static ssize_t ports_lflag_show(struct device *p,
-				struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	int count = 0;
-	int i = 0;
-
-	DGNC_VERIFY_BOARD(p, bd);
-
-	for (i = 0; i < bd->nasync; i++) {
-		count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
-			bd->channels[i]->ch_portnum,
-			bd->channels[i]->ch_c_lflag);
-	}
-	return count;
-}
-static DEVICE_ATTR_RO(ports_lflag);
-
-static ssize_t ports_digi_flag_show(struct device *p,
-				    struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	int count = 0;
-	int i = 0;
-
-	DGNC_VERIFY_BOARD(p, bd);
-
-	for (i = 0; i < bd->nasync; i++) {
-		count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
-			bd->channels[i]->ch_portnum,
-			bd->channels[i]->ch_digi.digi_flags);
-	}
-	return count;
-}
-static DEVICE_ATTR_RO(ports_digi_flag);
-
-static ssize_t ports_rxcount_show(struct device *p,
-				  struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	int count = 0;
-	int i = 0;
-
-	DGNC_VERIFY_BOARD(p, bd);
-
-	for (i = 0; i < bd->nasync; i++) {
-		count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
-			bd->channels[i]->ch_portnum,
-			bd->channels[i]->ch_rxcount);
-	}
-	return count;
-}
-static DEVICE_ATTR_RO(ports_rxcount);
-
-static ssize_t ports_txcount_show(struct device *p,
-				  struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	int count = 0;
-	int i = 0;
-
-	DGNC_VERIFY_BOARD(p, bd);
-
-	for (i = 0; i < bd->nasync; i++) {
-		count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
-			bd->channels[i]->ch_portnum,
-			bd->channels[i]->ch_txcount);
-	}
-	return count;
-}
-static DEVICE_ATTR_RO(ports_txcount);
-
-/*
- * this function creates the sys files that will export each signal status
- * to sysfs each value will be put in a separate filename
- */
-void dgnc_create_ports_sysfiles(struct dgnc_board *bd)
-{
-	int rc = 0;
-
-	dev_set_drvdata(&bd->pdev->dev, bd);
-	rc |= device_create_file(&bd->pdev->dev, &dev_attr_ports_state);
-	rc |= device_create_file(&bd->pdev->dev, &dev_attr_ports_baud);
-	rc |= device_create_file(&bd->pdev->dev, &dev_attr_ports_msignals);
-	rc |= device_create_file(&bd->pdev->dev, &dev_attr_ports_iflag);
-	rc |= device_create_file(&bd->pdev->dev, &dev_attr_ports_cflag);
-	rc |= device_create_file(&bd->pdev->dev, &dev_attr_ports_oflag);
-	rc |= device_create_file(&bd->pdev->dev, &dev_attr_ports_lflag);
-	rc |= device_create_file(&bd->pdev->dev, &dev_attr_ports_digi_flag);
-	rc |= device_create_file(&bd->pdev->dev, &dev_attr_ports_rxcount);
-	rc |= device_create_file(&bd->pdev->dev, &dev_attr_ports_txcount);
-	rc |= device_create_file(&bd->pdev->dev, &dev_attr_vpd);
-	rc |= device_create_file(&bd->pdev->dev, &dev_attr_serial_number);
-	if (rc)
-		dev_err(&bd->pdev->dev, "dgnc: sysfs device_create_file failed!\n");
-}
-
-/* removes all the sys files created for that port */
-void dgnc_remove_ports_sysfiles(struct dgnc_board *bd)
-{
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_state);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_baud);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_msignals);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_iflag);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_cflag);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_oflag);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_lflag);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_digi_flag);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_rxcount);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_txcount);
-	device_remove_file(&bd->pdev->dev, &dev_attr_vpd);
-	device_remove_file(&bd->pdev->dev, &dev_attr_serial_number);
-}
-
-static ssize_t tty_state_show(struct device *d,
-			      struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGNC_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGNC_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%s",
-			un->un_open_count ? "Open" : "Closed");
-}
-static DEVICE_ATTR_RO(tty_state);
-
-static ssize_t tty_baud_show(struct device *d,
-			     struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGNC_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGNC_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%d\n", ch->ch_old_baud);
-}
-static DEVICE_ATTR_RO(tty_baud);
-
-static ssize_t tty_msignals_show(struct device *d,
-				 struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGNC_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGNC_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	if (ch->ch_open_count) {
-		return snprintf(buf, PAGE_SIZE, "%s %s %s %s %s %s\n",
-			(ch->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
-			(ch->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
-			(ch->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
-			(ch->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
-			(ch->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
-			(ch->ch_mistat & UART_MSR_RI)  ? "RI"  : "");
-	}
-	return 0;
-}
-static DEVICE_ATTR_RO(tty_msignals);
-
-static ssize_t tty_iflag_show(struct device *d,
-			      struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGNC_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGNC_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_iflag);
-}
-static DEVICE_ATTR_RO(tty_iflag);
-
-static ssize_t tty_cflag_show(struct device *d,
-			      struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGNC_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGNC_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_cflag);
-}
-static DEVICE_ATTR_RO(tty_cflag);
-
-static ssize_t tty_oflag_show(struct device *d,
-			      struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGNC_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGNC_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_oflag);
-}
-static DEVICE_ATTR_RO(tty_oflag);
-
-static ssize_t tty_lflag_show(struct device *d,
-			      struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGNC_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGNC_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_lflag);
-}
-static DEVICE_ATTR_RO(tty_lflag);
-
-static ssize_t tty_digi_flag_show(struct device *d,
-				  struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGNC_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGNC_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_digi.digi_flags);
-}
-static DEVICE_ATTR_RO(tty_digi_flag);
-
-static ssize_t tty_rxcount_show(struct device *d,
-				struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGNC_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGNC_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_rxcount);
-}
-static DEVICE_ATTR_RO(tty_rxcount);
-
-static ssize_t tty_txcount_show(struct device *d,
-				struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGNC_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGNC_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_txcount);
-}
-static DEVICE_ATTR_RO(tty_txcount);
-
-static ssize_t tty_custom_name_show(struct device *d,
-				    struct device_attribute *attr, char *buf)
-{
-	struct dgnc_board *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGNC_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGNC_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%sn%d%c\n",
-		(un->un_type == DGNC_PRINT) ? "pr" : "tty",
-		bd->boardnum + 1, 'a' + ch->ch_portnum);
-}
-static DEVICE_ATTR_RO(tty_custom_name);
-
-static struct attribute *dgnc_sysfs_tty_entries[] = {
-	&dev_attr_tty_state.attr,
-	&dev_attr_tty_baud.attr,
-	&dev_attr_tty_msignals.attr,
-	&dev_attr_tty_iflag.attr,
-	&dev_attr_tty_cflag.attr,
-	&dev_attr_tty_oflag.attr,
-	&dev_attr_tty_lflag.attr,
-	&dev_attr_tty_digi_flag.attr,
-	&dev_attr_tty_rxcount.attr,
-	&dev_attr_tty_txcount.attr,
-	&dev_attr_tty_custom_name.attr,
-	NULL
-};
-
-static const struct attribute_group dgnc_tty_attribute_group = {
-	.name = NULL,
-	.attrs = dgnc_sysfs_tty_entries,
-};
-
-void dgnc_create_tty_sysfs(struct un_t *un, struct device *c)
-{
-	int ret;
-
-	ret = sysfs_create_group(&c->kobj, &dgnc_tty_attribute_group);
-	if (ret) {
-		dev_err(c, "dgnc: failed to create sysfs tty device attributes.\n");
-		sysfs_remove_group(&c->kobj, &dgnc_tty_attribute_group);
-		return;
-	}
-
-	dev_set_drvdata(c, un);
-}
-
-void dgnc_remove_tty_sysfs(struct device *c)
-{
-	sysfs_remove_group(&c->kobj, &dgnc_tty_attribute_group);
-}
diff --git a/drivers/staging/dgnc/dgnc_sysfs.h b/drivers/staging/dgnc/dgnc_sysfs.h
deleted file mode 100644
index 7be7d55bc49e..000000000000
--- a/drivers/staging/dgnc/dgnc_sysfs.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * 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.
- */
-
-#ifndef __DGNC_SYSFS_H
-#define __DGNC_SYSFS_H
-
-#include <linux/device.h>
-#include "dgnc_driver.h"
-
-struct dgnc_board;
-struct channel_t;
-struct un_t;
-struct pci_driver;
-struct class_device;
-
-void dgnc_create_ports_sysfiles(struct dgnc_board *bd);
-void dgnc_remove_ports_sysfiles(struct dgnc_board *bd);
-
-void dgnc_create_driver_sysfiles(struct pci_driver *);
-void dgnc_remove_driver_sysfiles(struct pci_driver *);
-
-int dgnc_tty_class_init(void);
-int dgnc_tty_class_destroy(void);
-
-void dgnc_create_tty_sysfs(struct un_t *un, struct device *c);
-void dgnc_remove_tty_sysfs(struct device *c);
-
-#endif
diff --git a/drivers/staging/dgnc/dgnc_tty.c b/drivers/staging/dgnc/dgnc_tty.c
index c181c26f0c1b..af4bc86e7e25 100644
--- a/drivers/staging/dgnc/dgnc_tty.c
+++ b/drivers/staging/dgnc/dgnc_tty.c
@@ -35,7 +35,6 @@
 #include "dgnc_tty.h"
 #include "dgnc_neo.h"
 #include "dgnc_cls.h"
-#include "dgnc_sysfs.h"
 #include "dgnc_utils.h"
 
 /* Default transparent print information. */
@@ -304,12 +303,10 @@ int dgnc_tty_init(struct dgnc_board *brd)
 			classp = tty_register_device(brd->serial_driver, i,
 						     &ch->ch_bd->pdev->dev);
 			ch->ch_tun.un_sysfs = classp;
-			dgnc_create_tty_sysfs(&ch->ch_tun, classp);
 
 			classp = tty_register_device(brd->print_driver, i,
 						     &ch->ch_bd->pdev->dev);
 			ch->ch_pun.un_sysfs = classp;
-			dgnc_create_tty_sysfs(&ch->ch_pun, classp);
 		}
 	}
 
@@ -333,20 +330,14 @@ void dgnc_cleanup_tty(struct dgnc_board *brd)
 {
 	int i = 0;
 
-	for (i = 0; i < brd->nasync; i++) {
-		if (brd->channels[i])
-			dgnc_remove_tty_sysfs(brd->channels[i]->
-					      ch_tun.un_sysfs);
+	for (i = 0; i < brd->nasync; i++)
 		tty_unregister_device(brd->serial_driver, i);
-	}
+
 	tty_unregister_driver(brd->serial_driver);
 
-	for (i = 0; i < brd->nasync; i++) {
-		if (brd->channels[i])
-			dgnc_remove_tty_sysfs(brd->channels[i]->
-					      ch_pun.un_sysfs);
+	for (i = 0; i < brd->nasync; i++)
 		tty_unregister_device(brd->print_driver, i);
-	}
+
 	tty_unregister_driver(brd->print_driver);
 
 	put_tty_driver(brd->serial_driver);