[PATCH] w1: cleanups.

 - white space changes.
 - list_for_each_entry/list_for_each_entry_safe and reverse changes.
 - small coding style changes.
 - removed redundant NULL checks.
 - use attribute group and macros instead of direct device attributes.
Patch is havily based on work from Adrian Bunk and Dmitry Torokhov,
thanks guys.
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/w1/Kconfig

@@ -3,9 +3,9 @@ menu "Dallas's 1-wire bus"
 config W1
 	tristate "Dallas's 1-wire support"
 	---help---
-	  Dallas's 1-wire bus is usefull to connect slow 1-pin devices 
+	  Dallas's 1-wire bus is usefull to connect slow 1-pin devices
 	  such as iButtons and thermal sensors.
-	  
+
 	  If you want W1 support, you should say Y here.
 
 	  This W1 support can also be built as a module.  If so, the module
@@ -17,8 +17,8 @@ config W1_MATROX
 	help
 	  Say Y here if you want to communicate with your 1-wire devices
 	  using Matrox's G400 GPIO pins.
-	  
-	  This support is also available as a module.  If so, the module 
+
+	  This support is also available as a module.  If so, the module
 	  will be called matrox_w1.ko.
 
 config W1_DS9490
@@ -27,17 +27,17 @@ config W1_DS9490
 	help
 	  Say Y here if you want to have a driver for DS9490R UWB <-> W1 bridge.
 
-	  This support is also available as a module.  If so, the module 
+	  This support is also available as a module.  If so, the module
 	  will be called ds9490r.ko.
 
-config W1_DS9490_BRIDGE
+config W1_DS9490R_BRIDGE
 	tristate "DS9490R USB <-> W1 transport layer for 1-wire"
 	depends on W1_DS9490
 	help
 	  Say Y here if you want to communicate with your 1-wire devices
 	  using DS9490R USB bridge.
 
-	  This support is also available as a module.  If so, the module 
+	  This support is also available as a module.  If so, the module
 	  will be called ds_w1_bridge.ko.
 
 config W1_THERM
@@ -51,7 +51,7 @@ config W1_SMEM
 	tristate "Simple 64bit memory family implementation"
 	depends on W1
 	help
-	  Say Y here if you want to connect 1-wire 
+	  Say Y here if you want to connect 1-wire
 	  simple 64bit memory rom(ds2401/ds2411/ds1990*) to you wire.
 
 endmenu

drivers/w1/matrox_w1.c

 /*
- * 	matrox_w1.c
+ *	matrox_w1.c
  *
  * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
- * 
+ *
  *
  * 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
@@ -59,7 +59,7 @@ static struct pci_driver matrox_w1_pci_driver = {
 	.remove = __devexit_p(matrox_w1_remove),
 };
 
-/* 
+/*
  * Matrox G400 DDC registers.
  */
 
@@ -177,8 +177,8 @@ static int __devinit matrox_w1_probe(struct pci_dev *pdev, const struct pci_devi
 
 	dev->bus_master = (struct w1_bus_master *)(dev + 1);
 
-	/* 
-	 * True for G400, for some other we need resource 0, see drivers/video/matrox/matroxfb_base.c 
+	/*
+	 * True for G400, for some other we need resource 0, see drivers/video/matrox/matroxfb_base.c
 	 */
 
 	dev->phys_addr = pci_resource_start(pdev, 1);

drivers/w1/w1.h

 /*
- * 	w1.h
+ *	w1.h
  *
  * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
- * 
+ *
  *
  * 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
@@ -25,9 +25,9 @@
 struct w1_reg_num
 {
 #if defined(__LITTLE_ENDIAN_BITFIELD)
-	__u64	family:8,
-		id:48,
-		crc:8;
+  	__u64	family:8,
+  		id:48,
+  		crc:8;
 #elif defined(__BIG_ENDIAN_BITFIELD)
 	__u64	crc:8,
 		id:48,
@@ -74,11 +74,11 @@ struct w1_slave
 	int			ttl;
 
 	struct w1_master	*master;
-	struct w1_family 	*family;
-	struct device 		dev;
-	struct completion 	dev_released;
+	struct w1_family	*family;
+	struct device		dev;
+	struct completion	dev_released;
 
-	struct bin_attribute 	attr_bin;
+	struct bin_attribute	attr_bin;
 	struct device_attribute	attr_name, attr_val;
 };
 
@@ -90,16 +90,16 @@ struct w1_bus_master
 
 	u8			(*read_bit)(unsigned long);
 	void			(*write_bit)(unsigned long, u8);
-  	
+
 	u8			(*read_byte)(unsigned long);
-  	void			(*write_byte)(unsigned long, u8);
-  	
+	void			(*write_byte)(unsigned long, u8);
+
 	u8			(*read_block)(unsigned long, u8 *, int);
 	void			(*write_block)(unsigned long, u8 *, int);
-	
-  	u8			(*touch_bit)(unsigned long, u8);
-  
-  	u8			(*reset_bus)(unsigned long);
+
+	u8			(*touch_bit)(unsigned long, u8);
+
+	u8			(*reset_bus)(unsigned long);
 
 	void			(*search)(unsigned long, w1_slave_found_callback);
 };
@@ -123,21 +123,20 @@ struct w1_master
 
 	int			need_exit;
 	pid_t			kpid;
-	struct semaphore 	mutex;
+	struct semaphore	mutex;
 
 	struct device_driver	*driver;
-	struct device 		dev;
-	struct completion 	dev_released;
-	struct completion 	dev_exited;
+	struct device		dev;
+	struct completion	dev_released;
+	struct completion	dev_exited;
 
 	struct w1_bus_master	*bus_master;
 
 	u32			seq, groups;
-	struct sock 		*nls;
+	struct sock		*nls;
 };
 
 int w1_create_master_attributes(struct w1_master *);
-void w1_destroy_master_attributes(struct w1_master *);
 void w1_search(struct w1_master *dev);
 
 #endif /* __KERNEL__ */

drivers/w1/w1_family.c

 /*
- * 	w1_family.c
+ *	w1_family.c
  *
  * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
- * 
+ *
  *
  * 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

drivers/w1/w1_family.h

 /*
- * 	w1_family.h
+ *	w1_family.h
  *
  * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
- * 
+ *
  *
  * 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
@@ -39,7 +39,7 @@ struct w1_family_ops
 {
 	ssize_t (* rname)(struct device *, struct device_attribute *, char *);
 	ssize_t (* rbin)(struct kobject *, char *, loff_t, size_t);
-	
+
 	ssize_t (* rval)(struct device *, struct device_attribute *, char *);
 	unsigned char rvalname[MAXNAMELEN];
 };
@@ -48,9 +48,9 @@ struct w1_family
 {
 	struct list_head	family_entry;
 	u8			fid;
-	
+
 	struct w1_family_ops	*fops;
-	
+
 	atomic_t		refcnt;
 	u8			need_exit;
 };

drivers/w1/w1_int.c

 /*
- * 	w1_int.c
+ *	w1_int.c
  *
  * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
- * 
+ *
  *
  * 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
@@ -39,8 +39,9 @@ extern spinlock_t w1_mlock;
 
 extern int w1_process(void *);
 
-struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
-	      struct device_driver *driver, struct device *device)
+static struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
+				       struct device_driver *driver,
+				       struct device *device)
 {
 	struct w1_master *dev;
 	int err;
@@ -60,13 +61,13 @@ struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
 
 	dev->bus_master = (struct w1_bus_master *)(dev + 1);
 
-	dev->owner 		= THIS_MODULE;
-	dev->max_slave_count 	= slave_count;
-	dev->slave_count 	= 0;
-	dev->attempts 		= 0;
-	dev->kpid 		= -1;
-	dev->initialized 	= 0;
-	dev->id 		= id;
+	dev->owner		= THIS_MODULE;
+	dev->max_slave_count	= slave_count;
+	dev->slave_count	= 0;
+	dev->attempts		= 0;
+	dev->kpid		= -1;
+	dev->initialized	= 0;
+	dev->id			= id;
 	dev->slave_ttl		= slave_ttl;
 
 	atomic_set(&dev->refcnt, 2);
@@ -105,7 +106,7 @@ struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
 	return dev;
 }
 
-void w1_free_dev(struct w1_master *dev)
+static void w1_free_dev(struct w1_master *dev)
 {
 	device_unregister(&dev->dev);
 	if (dev->nls && dev->nls->sk_socket)
@@ -197,10 +198,8 @@ void __w1_remove_master_device(struct w1_master *dev)
 void w1_remove_master_device(struct w1_bus_master *bm)
 {
 	struct w1_master *dev = NULL;
-	struct list_head *ent, *n;
 
-	list_for_each_safe(ent, n, &w1_masters) {
-		dev = list_entry(ent, struct w1_master, w1_master_entry);
+	list_for_each_entry(dev, &w1_masters, w1_master_entry) {
 		if (!dev->initialized)
 			continue;
 

drivers/w1/w1_int.h

 /*
- * 	w1_int.h
+ *	w1_int.h
  *
  * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
- * 
+ *
  *
  * 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
@@ -27,8 +27,6 @@
 
 #include "w1.h"
 
-struct w1_master * w1_alloc_dev(u32, int, int, struct device_driver *, struct device *);
-void w1_free_dev(struct w1_master *dev);
 int w1_add_master_device(struct w1_bus_master *);
 void w1_remove_master_device(struct w1_bus_master *);
 void __w1_remove_master_device(struct w1_master *);

drivers/w1/w1_io.c

 /*
- * 	w1_io.c
+ *	w1_io.c
  *
  * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
- * 
+ *
  *
  * 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

drivers/w1/w1_io.h

 /*
- * 	w1_io.h
+ *	w1_io.h
  *
  * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
- * 
+ *
  *
  * 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

drivers/w1/w1_log.h

 /*
- * 	w1_log.h
+ *	w1_log.h
  *
  * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
- * 
+ *
  *
  * 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

drivers/w1/w1_netlink.h

@@ -33,13 +33,13 @@ enum w1_netlink_message_types {
 	W1_MASTER_REMOVE,
 };
 
-struct w1_netlink_msg 
+struct w1_netlink_msg
 {
 	__u8				type;
 	__u8				reserved[3];
 	union
 	{
-		struct w1_reg_num 	id;
+		struct w1_reg_num	id;
 		__u64			w1_id;
 		struct
 		{

drivers/w1/w1_smem.c

 /*
- * 	w1_smem.c
+ *	w1_smem.c
  *
  * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
- * 
+ *
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the smems of the GNU General Public License as published by
@@ -70,7 +70,7 @@ static ssize_t w1_smem_read_val(struct device *dev, struct device_attribute *att
 static ssize_t w1_smem_read_bin(struct kobject *kobj, char *buf, loff_t off, size_t count)
 {
 	struct w1_slave *sl = container_of(container_of(kobj, struct device, kobj),
-			      			struct w1_slave, dev);
+					   struct w1_slave, dev);
 	int i;
 
 	atomic_inc(&sl->refcnt);
@@ -90,7 +90,7 @@ static ssize_t w1_smem_read_bin(struct kobject *kobj, char *buf, loff_t off, siz
 	for (i = 0; i < 8; ++i)
 		count += sprintf(buf + count, "%02x ", ((u8 *)&sl->reg_num)[i]);
 	count += sprintf(buf + count, "\n");
-	
+
 out:
 	up(&sl->master->mutex);
 out_dec:

drivers/w1/w1_therm.c

 /*
- * 	w1_therm.c
+ *	w1_therm.c
  *
  * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
- * 
+ *
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the therms of the GNU General Public License as published by
@@ -38,7 +38,7 @@ MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
 MODULE_DESCRIPTION("Driver for 1-wire Dallas network protocol, temperature family.");
 
 static u8 bad_roms[][9] = {
-				{0xaa, 0x00, 0x4b, 0x46, 0xff, 0xff, 0x0c, 0x10, 0x87}, 
+				{0xaa, 0x00, 0x4b, 0x46, 0xff, 0xff, 0x0c, 0x10, 0x87},
 				{}
 			};
 
@@ -163,7 +163,7 @@ static int w1_therm_check_rom(u8 rom[9])
 static ssize_t w1_therm_read_bin(struct kobject *kobj, char *buf, loff_t off, size_t count)
 {
 	struct w1_slave *sl = container_of(container_of(kobj, struct device, kobj),
-			      			struct w1_slave, dev);
+					   struct w1_slave, dev);
 	struct w1_master *dev = sl->master;
 	u8 rom[9], crc, verdict;
 	int i, max_trying = 10;
@@ -198,7 +198,7 @@ static ssize_t w1_therm_read_bin(struct kobject *kobj, char *buf, loff_t off, si
 			unsigned int tm = 750;
 
 			memcpy(&match[1], (u64 *) & sl->reg_num, 8);
-			
+
 			w1_write_block(dev, match, 9);
 
 			w1_write_8(dev, W1_CONVERT_TEMP);
@@ -211,7 +211,7 @@ static ssize_t w1_therm_read_bin(struct kobject *kobj, char *buf, loff_t off, si
 
 			if (!w1_reset_bus (dev)) {
 				w1_write_block(dev, match, 9);
-				
+
 				w1_write_8(dev, W1_READ_SCRATCHPAD);
 				if ((count = w1_read_block(dev, rom, 9)) != 9) {
 					dev_warn(&dev->dev, "w1_read_block() returned %d instead of 9.\n", count);