Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: (235 commits)
  Staging: IIO: add selection of IIO_SW_RING to LIS3L02DQ as needed
  Staging: IIO: Add tsl2560-2 support to tsl2563 driver.
  Staging: IIO: Remove tsl2561 driver. Support merged with tsl2563.
  Staging: wlags49_h2: fix up signal levels
  + drivers-staging-wlags49_h2-remove-cvs-metadata.patch added to -mm tree
  Staging: samsung-laptop: add TODO file
  Staging: samsung-laptop: remove old kernel code
  Staging: add Samsung Laptop driver
  staging: batman-adv meshing protocol
  Staging: rtl8192u: depends on USB
  Staging: rtl8192u: remove dead code
  Staging: rtl8192u: remove bad whitespaces
  Staging: rtl8192u: make it compile
  Staging: Added Realtek rtl8192u driver to staging
  Staging: dream: add gpio and pmem support
  Staging: dream: add TODO file
  Staging: android: delete android drivers
  Staging: et131x: clean up the avail fields in the rx registers
  Staging: et131x: Clean up number fields
  Staging: et131x: kill RX_DMA_MAX_PKT_TIME
  ...

drivers/staging/Kconfig

@@ -65,8 +65,6 @@ source "drivers/staging/rt2860/Kconfig"
 
 source "drivers/staging/rt2870/Kconfig"
 
-source "drivers/staging/rt3090/Kconfig"
-
 source "drivers/staging/comedi/Kconfig"
 
 source "drivers/staging/asus_oled/Kconfig"
@@ -79,14 +77,14 @@ source "drivers/staging/rtl8187se/Kconfig"
 
 source "drivers/staging/rtl8192su/Kconfig"
 
+source "drivers/staging/rtl8192u/Kconfig"
+
 source "drivers/staging/rtl8192e/Kconfig"
 
 source "drivers/staging/mimio/Kconfig"
 
 source "drivers/staging/frontier/Kconfig"
 
-source "drivers/staging/android/Kconfig"
-
 source "drivers/staging/dream/Kconfig"
 
 source "drivers/staging/dst/Kconfig"
@@ -127,6 +125,16 @@ source "drivers/staging/sep/Kconfig"
 
 source "drivers/staging/iio/Kconfig"
 
+source "drivers/staging/ramzswap/Kconfig"
+
+source "drivers/staging/wlags49_h2/Kconfig"
+
+source "drivers/staging/wlags49_h25/Kconfig"
+
+source "drivers/staging/batman-adv/Kconfig"
+
+source "drivers/staging/samsung-laptop/Kconfig"
+
 source "drivers/staging/strip/Kconfig"
 
 source "drivers/staging/arlan/Kconfig"

drivers/staging/Makefile

@@ -15,18 +15,17 @@ obj-$(CONFIG_POCH)		+= poch/
 obj-$(CONFIG_OTUS)		+= otus/
 obj-$(CONFIG_RT2860)		+= rt2860/
 obj-$(CONFIG_RT2870)		+= rt2870/
-obj-$(CONFIG_RT3090)		+= rt3090/
 obj-$(CONFIG_COMEDI)		+= comedi/
 obj-$(CONFIG_ASUS_OLED)		+= asus_oled/
 obj-$(CONFIG_PANEL)		+= panel/
 obj-$(CONFIG_ALTERA_PCIE_CHDMA)	+= altpciechdma/
-obj-$(CONFIG_RTL8187SE)		+= rtl8187se/
+obj-$(CONFIG_R8187SE)		+= rtl8187se/
 obj-$(CONFIG_RTL8192SU)		+= rtl8192su/
+obj-$(CONFIG_RTL8192U)		+= rtl8192u/
 obj-$(CONFIG_RTL8192E)		+= rtl8192e/
 obj-$(CONFIG_INPUT_MIMIO)	+= mimio/
 obj-$(CONFIG_TRANZPORT)		+= frontier/
-obj-$(CONFIG_ANDROID)		+= android/
-obj-$(CONFIG_ANDROID)		+= dream/
+obj-$(CONFIG_DREAM)		+= dream/
 obj-$(CONFIG_DST)		+= dst/
 obj-$(CONFIG_POHMELFS)		+= pohmelfs/
 obj-$(CONFIG_B3DFG)		+= b3dfg/
@@ -44,6 +43,11 @@ obj-$(CONFIG_VME_BUS)		+= vme/
 obj-$(CONFIG_RAR_REGISTER)	+= rar/
 obj-$(CONFIG_DX_SEP)		+= sep/
 obj-$(CONFIG_IIO)		+= iio/
+obj-$(CONFIG_RAMZSWAP)		+= ramzswap/
+obj-$(CONFIG_WLAGS49_H2)	+= wlags49_h2/
+obj-$(CONFIG_WLAGS49_H25)	+= wlags49_h25/
+obj-$(CONFIG_BATMAN_ADV)	+= batman-adv/
+obj-$(CONFIG_SAMSUNG_LAPTOP)	+= samsung-laptop/
 obj-$(CONFIG_STRIP)		+= strip/
 obj-$(CONFIG_ARLAN)		+= arlan/
 obj-$(CONFIG_WAVELAN)		+= wavelan/

drivers/staging/altpciechdma/altpciechdma.c

@@ -212,7 +212,7 @@ struct ape_dev {
 	int msi_enabled;
 	/* whether this driver could obtain the regions */
 	int got_regions;
-	/* irq line succesfully requested by this driver, -1 otherwise */
+	/* irq line successfully requested by this driver, -1 otherwise */
 	int irq_line;
 	/* board revision */
 	u8 revision;
@@ -336,7 +336,7 @@ static int __devinit map_bars(struct ape_dev *ape, struct pci_dev *dev)
 		printk(KERN_DEBUG "BAR[%d] mapped at 0x%p with length %lu(/%lu).\n", i,
 		ape->bar[i], bar_min_len[i], bar_length);
 	}
-	/* succesfully mapped all required BAR regions */
+	/* successfully mapped all required BAR regions */
 	rc = 0;
 	goto success;
 fail:
@@ -911,7 +911,7 @@ static int __devinit probe(struct pci_dev *dev, const struct pci_device_id *id)
 	/* perform DMA engines loop back test */
 	rc = dma_test(ape, dev);
 	(void)rc;
-	/* succesfully took the device */
+	/* successfully took the device */
 	rc = 0;
 	printk(KERN_DEBUG "probe() successful.\n");
 	goto end;

drivers/staging/android/Kconfig

-menu "Android"
-
-config ANDROID
-	bool "Android Drivers"
-	depends on BROKEN
-	default N
-	---help---
-	  Enable support for various drivers needed on the Android platform
-
-if ANDROID
-
-config ANDROID_BINDER_IPC
-	bool "Android Binder IPC Driver"
-	default n
-
-config ANDROID_LOGGER
-	tristate "Android log driver"
-	default n
-
-config ANDROID_RAM_CONSOLE
-	bool "Android RAM buffer console"
-	default n
-
-config ANDROID_RAM_CONSOLE_ENABLE_VERBOSE
-	bool "Enable verbose console messages on Android RAM console"
-	default y
-	depends on ANDROID_RAM_CONSOLE
-
-menuconfig ANDROID_RAM_CONSOLE_ERROR_CORRECTION
-	bool "Android RAM Console Enable error correction"
-	default n
-	depends on ANDROID_RAM_CONSOLE
-	depends on !ANDROID_RAM_CONSOLE_EARLY_INIT
-	select REED_SOLOMON
-	select REED_SOLOMON_ENC8
-	select REED_SOLOMON_DEC8
-
-if ANDROID_RAM_CONSOLE_ERROR_CORRECTION
-
-config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_DATA_SIZE
-	int "Android RAM Console Data data size"
-	default 128
-	help
-	  Must be a power of 2.
-
-config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_ECC_SIZE
-	int "Android RAM Console ECC size"
-	default 16
-
-config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE
-	int "Android RAM Console Symbol size"
-	default 8
-
-config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_POLYNOMIAL
-	hex "Android RAM Console Polynomial"
-	default 0x19 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 4)
-	default 0x29 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 5)
-	default 0x61 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 6)
-	default 0x89 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 7)
-	default 0x11d if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 8)
-
-endif # ANDROID_RAM_CONSOLE_ERROR_CORRECTION
-
-config ANDROID_RAM_CONSOLE_EARLY_INIT
-	bool "Start Android RAM console early"
-	default n
-	depends on ANDROID_RAM_CONSOLE
-
-config ANDROID_RAM_CONSOLE_EARLY_ADDR
-	hex "Android RAM console virtual address"
-	default 0
-	depends on ANDROID_RAM_CONSOLE_EARLY_INIT
-
-config ANDROID_RAM_CONSOLE_EARLY_SIZE
-	hex "Android RAM console buffer size"
-	default 0
-	depends on ANDROID_RAM_CONSOLE_EARLY_INIT
-
-config ANDROID_TIMED_OUTPUT
-	bool "Timed output class driver"
-	default y
-
-config ANDROID_TIMED_GPIO
-	tristate "Android timed gpio driver"
-	depends on GENERIC_GPIO && ANDROID_TIMED_OUTPUT
-	default n
-
-config ANDROID_LOW_MEMORY_KILLER
-	bool "Android Low Memory Killer"
-	default N
-	---help---
-	  Register processes to be killed when memory is low
-
-endif # if ANDROID
-
-endmenu

drivers/staging/android/Makefile

-obj-$(CONFIG_ANDROID_BINDER_IPC)	+= binder.o
-obj-$(CONFIG_ANDROID_LOGGER)		+= logger.o
-obj-$(CONFIG_ANDROID_RAM_CONSOLE)	+= ram_console.o
-obj-$(CONFIG_ANDROID_TIMED_OUTPUT)	+= timed_output.o
-obj-$(CONFIG_ANDROID_TIMED_GPIO)	+= timed_gpio.o
-obj-$(CONFIG_ANDROID_LOW_MEMORY_KILLER)	+= lowmemorykiller.o

drivers/staging/android/TODO

-TODO:
-	- checkpatch.pl cleanups
-	- sparse fixes
-	- rename files to be not so "generic"
-	- make sure things build as modules properly
-	- add proper arch dependancies as needed
-	- audit userspace interfaces to make sure they are sane
-
-Please send patches to Greg Kroah-Hartman <greg@kroah.com> and Cc:
-Brian Swetland <swetland@google.com>

drivers/staging/android/binder.h

-/*
- * Copyright (C) 2008 Google, Inc.
- *
- * Based on, but no longer compatible with, the original
- * OpenBinder.org binder driver interface, which is:
- *
- * Copyright (c) 2005 Palmsource, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef _LINUX_BINDER_H
-#define _LINUX_BINDER_H
-
-#include <linux/ioctl.h>
-
-#define B_PACK_CHARS(c1, c2, c3, c4) \
-	((((c1)<<24)) | (((c2)<<16)) | (((c3)<<8)) | (c4))
-#define B_TYPE_LARGE 0x85
-
-enum {
-	BINDER_TYPE_BINDER	= B_PACK_CHARS('s', 'b', '*', B_TYPE_LARGE),
-	BINDER_TYPE_WEAK_BINDER	= B_PACK_CHARS('w', 'b', '*', B_TYPE_LARGE),
-	BINDER_TYPE_HANDLE	= B_PACK_CHARS('s', 'h', '*', B_TYPE_LARGE),
-	BINDER_TYPE_WEAK_HANDLE	= B_PACK_CHARS('w', 'h', '*', B_TYPE_LARGE),
-	BINDER_TYPE_FD		= B_PACK_CHARS('f', 'd', '*', B_TYPE_LARGE),
-};
-
-enum {
-	FLAT_BINDER_FLAG_PRIORITY_MASK = 0xff,
-	FLAT_BINDER_FLAG_ACCEPTS_FDS = 0x100,
-};
-
-/*
- * This is the flattened representation of a Binder object for transfer
- * between processes.  The 'offsets' supplied as part of a binder transaction
- * contains offsets into the data where these structures occur.  The Binder
- * driver takes care of re-writing the structure type and data as it moves
- * between processes.
- */
-struct flat_binder_object {
-	/* 8 bytes for large_flat_header. */
-	unsigned long		type;
-	unsigned long		flags;
-
-	/* 8 bytes of data. */
-	union {
-		void		*binder;	/* local object */
-		signed long	handle;		/* remote object */
-	};
-
-	/* extra data associated with local object */
-	void			*cookie;
-};
-
-/*
- * On 64-bit platforms where user code may run in 32-bits the driver must
- * translate the buffer (and local binder) addresses apropriately.
- */
-
-struct binder_write_read {
-	signed long	write_size;	/* bytes to write */
-	signed long	write_consumed;	/* bytes consumed by driver */
-	unsigned long	write_buffer;
-	signed long	read_size;	/* bytes to read */
-	signed long	read_consumed;	/* bytes consumed by driver */
-	unsigned long	read_buffer;
-};
-
-/* Use with BINDER_VERSION, driver fills in fields. */
-struct binder_version {
-	/* driver protocol version -- increment with incompatible change */
-	signed long	protocol_version;
-};
-
-/* This is the current protocol version. */
-#define BINDER_CURRENT_PROTOCOL_VERSION 7
-
-#define BINDER_WRITE_READ   		_IOWR('b', 1, struct binder_write_read)
-#define	BINDER_SET_IDLE_TIMEOUT		_IOW('b', 3, int64_t)
-#define	BINDER_SET_MAX_THREADS		_IOW('b', 5, size_t)
-#define	BINDER_SET_IDLE_PRIORITY	_IOW('b', 6, int)
-#define	BINDER_SET_CONTEXT_MGR		_IOW('b', 7, int)
-#define	BINDER_THREAD_EXIT		_IOW('b', 8, int)
-#define BINDER_VERSION			_IOWR('b', 9, struct binder_version)
-
-/*
- * NOTE: Two special error codes you should check for when calling
- * in to the driver are:
- *
- * EINTR -- The operation has been interupted.  This should be
- * handled by retrying the ioctl() until a different error code
- * is returned.
- *
- * ECONNREFUSED -- The driver is no longer accepting operations
- * from your process.  That is, the process is being destroyed.
- * You should handle this by exiting from your process.  Note
- * that once this error code is returned, all further calls to
- * the driver from any thread will return this same code.
- */
-
-enum transaction_flags {
-	TF_ONE_WAY	= 0x01,	/* this is a one-way call: async, no return */
-	TF_ROOT_OBJECT	= 0x04,	/* contents are the component's root object */
-	TF_STATUS_CODE	= 0x08,	/* contents are a 32-bit status code */
-	TF_ACCEPT_FDS	= 0x10,	/* allow replies with file descriptors */
-};
-
-struct binder_transaction_data {
-	/* The first two are only used for bcTRANSACTION and brTRANSACTION,
-	 * identifying the target and contents of the transaction.
-	 */
-	union {
-		size_t	handle;	/* target descriptor of command transaction */
-		void	*ptr;	/* target descriptor of return transaction */
-	} target;
-	void		*cookie;	/* target object cookie */
-	unsigned int	code;		/* transaction command */
-
-	/* General information about the transaction. */
-	unsigned int	flags;
-	pid_t		sender_pid;
-	uid_t		sender_euid;
-	size_t		data_size;	/* number of bytes of data */
-	size_t		offsets_size;	/* number of bytes of offsets */
-
-	/* If this transaction is inline, the data immediately
-	 * follows here; otherwise, it ends with a pointer to
-	 * the data buffer.
-	 */
-	union {
-		struct {
-			/* transaction data */
-			const void	*buffer;
-			/* offsets from buffer to flat_binder_object structs */
-			const void	*offsets;
-		} ptr;
-		uint8_t	buf[8];
-	} data;
-};
-
-struct binder_ptr_cookie {
-	void *ptr;
-	void *cookie;
-};
-
-struct binder_pri_desc {
-	int priority;
-	int desc;
-};
-
-struct binder_pri_ptr_cookie {
-	int priority;
-	void *ptr;
-	void *cookie;
-};
-
-enum BinderDriverReturnProtocol {
-	BR_ERROR = _IOR('r', 0, int),
-	/*
-	 * int: error code
-	 */
-
-	BR_OK = _IO('r', 1),
-	/* No parameters! */
-
-	BR_TRANSACTION = _IOR('r', 2, struct binder_transaction_data),
-	BR_REPLY = _IOR('r', 3, struct binder_transaction_data),
-	/*
-	 * binder_transaction_data: the received command.
-	 */
-
-	BR_ACQUIRE_RESULT = _IOR('r', 4, int),
-	/*
-	 * not currently supported
-	 * int: 0 if the last bcATTEMPT_ACQUIRE was not successful.
-	 * Else the remote object has acquired a primary reference.
-	 */
-
-	BR_DEAD_REPLY = _IO('r', 5),
-	/*
-	 * The target of the last transaction (either a bcTRANSACTION or
-	 * a bcATTEMPT_ACQUIRE) is no longer with us.  No parameters.
-	 */
-
-	BR_TRANSACTION_COMPLETE = _IO('r', 6),
-	/*
-	 * No parameters... always refers to the last transaction requested
-	 * (including replies).  Note that this will be sent even for
-	 * asynchronous transactions.
-	 */
-
-	BR_INCREFS = _IOR('r', 7, struct binder_ptr_cookie),
-	BR_ACQUIRE = _IOR('r', 8, struct binder_ptr_cookie),
-	BR_RELEASE = _IOR('r', 9, struct binder_ptr_cookie),
-	BR_DECREFS = _IOR('r', 10, struct binder_ptr_cookie),
-	/*
-	 * void *:	ptr to binder
-	 * void *: cookie for binder
-	 */
-
-	BR_ATTEMPT_ACQUIRE = _IOR('r', 11, struct binder_pri_ptr_cookie),
-	/*
-	 * not currently supported
-	 * int:	priority
-	 * void *: ptr to binder
-	 * void *: cookie for binder
-	 */
-
-	BR_NOOP = _IO('r', 12),
-	/*
-	 * No parameters.  Do nothing and examine the next command.  It exists
-	 * primarily so that we can replace it with a BR_SPAWN_LOOPER command.
-	 */
-
-	BR_SPAWN_LOOPER = _IO('r', 13),
-	/*
-	 * No parameters.  The driver has determined that a process has no
-	 * threads waiting to service incomming transactions.  When a process
-	 * receives this command, it must spawn a new service thread and
-	 * register it via bcENTER_LOOPER.
-	 */
-
-	BR_FINISHED = _IO('r', 14),
-	/*
-	 * not currently supported
-	 * stop threadpool thread
-	 */
-
-	BR_DEAD_BINDER = _IOR('r', 15, void *),
-	/*
-	 * void *: cookie
-	 */
-	BR_CLEAR_DEATH_NOTIFICATION_DONE = _IOR('r', 16, void *),
-	/*
-	 * void *: cookie
-	 */
-
-	BR_FAILED_REPLY = _IO('r', 17),
-	/*
-	 * The the last transaction (either a bcTRANSACTION or
-	 * a bcATTEMPT_ACQUIRE) failed (e.g. out of memory).  No parameters.
-	 */
-};
-
-enum BinderDriverCommandProtocol {
-	BC_TRANSACTION = _IOW('c', 0, struct binder_transaction_data),
-	BC_REPLY = _IOW('c', 1, struct binder_transaction_data),
-	/*
-	 * binder_transaction_data: the sent command.
-	 */
-
-	BC_ACQUIRE_RESULT = _IOW('c', 2, int),
-	/*
-	 * not currently supported
-	 * int:  0 if the last BR_ATTEMPT_ACQUIRE was not successful.
-	 * Else you have acquired a primary reference on the object.
-	 */
-
-	BC_FREE_BUFFER = _IOW('c', 3, int),
-	/*
-	 * void *: ptr to transaction data received on a read
-	 */
-
-	BC_INCREFS = _IOW('c', 4, int),
-	BC_ACQUIRE = _IOW('c', 5, int),
-	BC_RELEASE = _IOW('c', 6, int),
-	BC_DECREFS = _IOW('c', 7, int),
-	/*
-	 * int:	descriptor
-	 */
-
-	BC_INCREFS_DONE = _IOW('c', 8, struct binder_ptr_cookie),
-	BC_ACQUIRE_DONE = _IOW('c', 9, struct binder_ptr_cookie),
-	/*
-	 * void *: ptr to binder
-	 * void *: cookie for binder
-	 */
-
-	BC_ATTEMPT_ACQUIRE = _IOW('c', 10, struct binder_pri_desc),
-	/*
-	 * not currently supported
-	 * int: priority
-	 * int: descriptor
-	 */
-
-	BC_REGISTER_LOOPER = _IO('c', 11),
-	/*
-	 * No parameters.
-	 * Register a spawned looper thread with the device.
-	 */
-
-	BC_ENTER_LOOPER = _IO('c', 12),
-	BC_EXIT_LOOPER = _IO('c', 13),
-	/*
-	 * No parameters.
-	 * These two commands are sent as an application-level thread
-	 * enters and exits the binder loop, respectively.  They are
-	 * used so the binder can have an accurate count of the number
-	 * of looping threads it has available.
-	 */
-
-	BC_REQUEST_DEATH_NOTIFICATION = _IOW('c', 14, struct binder_ptr_cookie),
-	/*
-	 * void *: ptr to binder
-	 * void *: cookie
-	 */
-
-	BC_CLEAR_DEATH_NOTIFICATION = _IOW('c', 15, struct binder_ptr_cookie),
-	/*
-	 * void *: ptr to binder
-	 * void *: cookie
-	 */
-
-	BC_DEAD_BINDER_DONE = _IOW('c', 16, void *),
-	/*
-	 * void *: cookie
-	 */
-};
-
-#endif /* _LINUX_BINDER_H */
-

drivers/staging/android/logger.c

-/*
- * drivers/misc/logger.c
- *
- * A Logging Subsystem
- *
- * Copyright (C) 2007-2008 Google, Inc.
- *
- * Robert Love <rlove@google.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/miscdevice.h>
-#include <linux/uaccess.h>
-#include <linux/poll.h>
-#include <linux/time.h>
-#include "logger.h"
-
-#include <asm/ioctls.h>
-
-/*
- * struct logger_log - represents a specific log, such as 'main' or 'radio'
- *
- * This structure lives from module insertion until module removal, so it does
- * not need additional reference counting. The structure is protected by the
- * mutex 'mutex'.
- */
-struct logger_log {
-	unsigned char 		*buffer;/* the ring buffer itself */
-	struct miscdevice	misc;	/* misc device representing the log */
-	wait_queue_head_t	wq;	/* wait queue for readers */
-	struct list_head	readers; /* this log's readers */
-	struct mutex		mutex;	/* mutex protecting buffer */
-	size_t			w_off;	/* current write head offset */
-	size_t			head;	/* new readers start here */
-	size_t			size;	/* size of the log */
-};
-
-/*
- * struct logger_reader - a logging device open for reading
- *
- * This object lives from open to release, so we don't need additional
- * reference counting. The structure is protected by log->mutex.
- */
-struct logger_reader {
-	struct logger_log	*log;	/* associated log */
-	struct list_head	list;	/* entry in logger_log's list */
-	size_t			r_off;	/* current read head offset */
-};
-
-/* logger_offset - returns index 'n' into the log via (optimized) modulus */
-#define logger_offset(n)	((n) & (log->size - 1))
-
-/*
- * file_get_log - Given a file structure, return the associated log
- *
- * This isn't aesthetic. We have several goals:
- *
- * 	1) Need to quickly obtain the associated log during an I/O operation
- * 	2) Readers need to maintain state (logger_reader)
- * 	3) Writers need to be very fast (open() should be a near no-op)
- *
- * In the reader case, we can trivially go file->logger_reader->logger_log.
- * For a writer, we don't want to maintain a logger_reader, so we just go
- * file->logger_log. Thus what file->private_data points at depends on whether
- * or not the file was opened for reading. This function hides that dirtiness.
- */
-static inline struct logger_log *file_get_log(struct file *file)
-{
-	if (file->f_mode & FMODE_READ) {
-		struct logger_reader *reader = file->private_data;
-		return reader->log;
-	} else
-		return file->private_data;
-}
-
-/*
- * get_entry_len - Grabs the length of the payload of the next entry starting
- * from 'off'.
- *
- * Caller needs to hold log->mutex.
- */
-static __u32 get_entry_len(struct logger_log *log, size_t off)
-{
-	__u16 val;
-
-	switch (log->size - off) {
-	case 1:
-		memcpy(&val, log->buffer + off, 1);
-		memcpy(((char *) &val) + 1, log->buffer, 1);
-		break;
-	default:
-		memcpy(&val, log->buffer + off, 2);
-	}
-
-	return sizeof(struct logger_entry) + val;
-}
-
-/*
- * do_read_log_to_user - reads exactly 'count' bytes from 'log' into the
- * user-space buffer 'buf'. Returns 'count' on success.
- *
- * Caller must hold log->mutex.
- */
-static ssize_t do_read_log_to_user(struct logger_log *log,
-				   struct logger_reader *reader,
-				   char __user *buf,
-				   size_t count)
-{
-	size_t len;
-
-	/*
-	 * We read from the log in two disjoint operations. First, we read from
-	 * the current read head offset up to 'count' bytes or to the end of
-	 * the log, whichever comes first.
-	 */
-	len = min(count, log->size - reader->r_off);
-	if (copy_to_user(buf, log->buffer + reader->r_off, len))
-		return -EFAULT;
-
-	/*
-	 * Second, we read any remaining bytes, starting back at the head of
-	 * the log.
-	 */
-	if (count != len)
-		if (copy_to_user(buf + len, log->buffer, count - len))
-			return -EFAULT;
-
-	reader->r_off = logger_offset(reader->r_off + count);
-
-	return count;
-}
-
-/*
- * logger_read - our log's read() method
- *
- * Behavior:
- *
- * 	- O_NONBLOCK works
- * 	- If there are no log entries to read, blocks until log is written to
- * 	- Atomically reads exactly one log entry
- *
- * Optimal read size is LOGGER_ENTRY_MAX_LEN. Will set errno to EINVAL if read
- * buffer is insufficient to hold next entry.
- */
-static ssize_t logger_read(struct file *file, char __user *buf,
-			   size_t count, loff_t *pos)
-{
-	struct logger_reader *reader = file->private_data;
-	struct logger_log *log = reader->log;
-	ssize_t ret;
-	DEFINE_WAIT(wait);
-
-start:
-	while (1) {
-		prepare_to_wait(&log->wq, &wait, TASK_INTERRUPTIBLE);
-
-		mutex_lock(&log->mutex);
-		ret = (log->w_off == reader->r_off);
-		mutex_unlock(&log->mutex);
-		if (!ret)
-			break;
-
-		if (file->f_flags & O_NONBLOCK) {
-			ret = -EAGAIN;
-			break;
-		}
-
-		if (signal_pending(current)) {
-			ret = -EINTR;
-			break;
-		}
-
-		schedule();
-	}
-
-	finish_wait(&log->wq, &wait);
-	if (ret)
-		return ret;
-
-	mutex_lock(&log->mutex);
-
-	/* is there still something to read or did we race? */
-	if (unlikely(log->w_off == reader->r_off)) {
-		mutex_unlock(&log->mutex);
-		goto start;
-	}
-
-	/* get the size of the next entry */
-	ret = get_entry_len(log, reader->r_off);
-	if (count < ret) {
-		ret = -EINVAL;
-		goto out;
-	}
-
-	/* get exactly one entry from the log */
-	ret = do_read_log_to_user(log, reader, buf, ret);
-
-out:
-	mutex_unlock(&log->mutex);
-
-	return ret;
-}
-
-/*
- * get_next_entry - return the offset of the first valid entry at least 'len'
- * bytes after 'off'.
- *
- * Caller must hold log->mutex.
- */
-static size_t get_next_entry(struct logger_log *log, size_t off, size_t len)
-{
-	size_t count = 0;
-
-	do {
-		size_t nr = get_entry_len(log, off);
-		off = logger_offset(off + nr);
-		count += nr;
-	} while (count < len);
-
-	return off;
-}
-
-/*
- * clock_interval - is a < c < b in mod-space? Put another way, does the line
- * from a to b cross c?
- */
-static inline int clock_interval(size_t a, size_t b, size_t c)
-{
-	if (b < a) {
-		if (a < c || b >= c)
-			return 1;
-	} else {
-		if (a < c && b >= c)
-			return 1;
-	}
-
-	return 0;
-}
-
-/*
- * fix_up_readers - walk the list of all readers and "fix up" any who were
- * lapped by the writer; also do the same for the default "start head".
- * We do this by "pulling forward" the readers and start head to the first
- * entry after the new write head.
- *
- * The caller needs to hold log->mutex.
- */
-static void fix_up_readers(struct logger_log *log, size_t len)
-{
-	size_t old = log->w_off;
-	size_t new = logger_offset(old + len);
-	struct logger_reader *reader;
-
-	if (clock_interval(old, new, log->head))
-		log->head = get_next_entry(log, log->head, len);
-
-	list_for_each_entry(reader, &log->readers, list)
-		if (clock_interval(old, new, reader->r_off))
-			reader->r_off = get_next_entry(log, reader->r_off, len);
-}
-
-/*
- * do_write_log - writes 'len' bytes from 'buf' to 'log'
- *
- * The caller needs to hold log->mutex.
- */
-static void do_write_log(struct logger_log *log, const void *buf, size_t count)
-{
-	size_t len;
-
-	len = min(count, log->size - log->w_off);
-	memcpy(log->buffer + log->w_off, buf, len);
-
-	if (count != len)
-		memcpy(log->buffer, buf + len, count - len);
-
-	log->w_off = logger_offset(log->w_off + count);
-
-}
-
-/*
- * do_write_log_user - writes 'len' bytes from the user-space buffer 'buf' to
- * the log 'log'
- *
- * The caller needs to hold log->mutex.
- *
- * Returns 'count' on success, negative error code on failure.
- */
-static ssize_t do_write_log_from_user(struct logger_log *log,
-				      const void __user *buf, size_t count)
-{
-	size_t len;
-
-	len = min(count, log->size - log->w_off);
-	if (len && copy_from_user(log->buffer + log->w_off, buf, len))
-		return -EFAULT;
-
-	if (count != len)
-		if (copy_from_user(log->buffer, buf + len, count - len))
-			return -EFAULT;
-
-	log->w_off = logger_offset(log->w_off + count);
-
-	return count;
-}
-
-/*
- * logger_aio_write - our write method, implementing support for write(),
- * writev(), and aio_write(). Writes are our fast path, and we try to optimize
- * them above all else.
- */
-ssize_t logger_aio_write(struct kiocb *iocb, const struct iovec *iov,
-			 unsigned long nr_segs, loff_t ppos)
-{
-	struct logger_log *log = file_get_log(iocb->ki_filp);
-	size_t orig = log->w_off;
-	struct logger_entry header;
-	struct timespec now;
-	ssize_t ret = 0;
-
-	now = current_kernel_time();
-
-	header.pid = current->tgid;
-	header.tid = current->pid;
-	header.sec = now.tv_sec;
-	header.nsec = now.tv_nsec;
-	header.len = min_t(size_t, iocb->ki_left, LOGGER_ENTRY_MAX_PAYLOAD);
-
-	/* null writes succeed, return zero */
-	if (unlikely(!header.len))
-		return 0;
-
-	mutex_lock(&log->mutex);
-
-	/*
-	 * Fix up any readers, pulling them forward to the first readable
-	 * entry after (what will be) the new write offset. We do this now
-	 * because if we partially fail, we can end up with clobbered log
-	 * entries that encroach on readable buffer.
-	 */
-	fix_up_readers(log, sizeof(struct logger_entry) + header.len);
-
-	do_write_log(log, &header, sizeof(struct logger_entry));
-
-	while (nr_segs-- > 0) {
-		size_t len;
-		ssize_t nr;
-
-		/* figure out how much of this vector we can keep */
-		len = min_t(size_t, iov->iov_len, header.len - ret);
-
-		/* write out this segment's payload */
-		nr = do_write_log_from_user(log, iov->iov_base, len);
-		if (unlikely(nr < 0)) {
-			log->w_off = orig;
-			mutex_unlock(&log->mutex);
-			return nr;
-		}
-
-		iov++;
-		ret += nr;
-	}
-
-	mutex_unlock(&log->mutex);
-
-	/* wake up any blocked readers */
-	wake_up_interruptible(&log->wq);
-
-	return ret;
-}
-
-static struct logger_log *get_log_from_minor(int);
-
-/*
- * logger_open - the log's open() file operation
- *
- * Note how near a no-op this is in the write-only case. Keep it that way!
- */
-static int logger_open(struct inode *inode, struct file *file)
-{
-	struct logger_log *log;
-	int ret;
-
-	ret = nonseekable_open(inode, file);
-	if (ret)
-		return ret;
-
-	log = get_log_from_minor(MINOR(inode->i_rdev));
-	if (!log)
-		return -ENODEV;
-
-	if (file->f_mode & FMODE_READ) {
-		struct logger_reader *reader;
-
-		reader = kmalloc(sizeof(struct logger_reader), GFP_KERNEL);
-		if (!reader)
-			return -ENOMEM;
-
-		reader->log = log;
-		INIT_LIST_HEAD(&reader->list);
-
-		mutex_lock(&log->mutex);
-		reader->r_off = log->head;
-		list_add_tail(&reader->list, &log->readers);
-		mutex_unlock(&log->mutex);
-
-		file->private_data = reader;
-	} else
-		file->private_data = log;
-
-	return 0;
-}
-
-/*
- * logger_release - the log's release file operation
- *
- * Note this is a total no-op in the write-only case. Keep it that way!
- */
-static int logger_release(struct inode *ignored, struct file *file)
-{
-	if (file->f_mode & FMODE_READ) {
-		struct logger_reader *reader = file->private_data;
-		list_del(&reader->list);
-		kfree(reader);
-	}
-
-	return 0;
-}
-
-/*
- * logger_poll - the log's poll file operation, for poll/select/epoll
- *
- * Note we always return POLLOUT, because you can always write() to the log.
- * Note also that, strictly speaking, a return value of POLLIN does not
- * guarantee that the log is readable without blocking, as there is a small
- * chance that the writer can lap the reader in the interim between poll()
- * returning and the read() request.
- */
-static unsigned int logger_poll(struct file *file, poll_table *wait)
-{
-	struct logger_reader *reader;
-	struct logger_log *log;
-	unsigned int ret = POLLOUT | POLLWRNORM;
-
-	if (!(file->f_mode & FMODE_READ))
-		return ret;
-
-	reader = file->private_data;
-	log = reader->log;
-
-	poll_wait(file, &log->wq, wait);
-
-	mutex_lock(&log->mutex);
-	if (log->w_off != reader->r_off)
-		ret |= POLLIN | POLLRDNORM;
-	mutex_unlock(&log->mutex);
-
-	return ret;
-}
-
-static long logger_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	struct logger_log *log = file_get_log(file);
-	struct logger_reader *reader;
-	long ret = -ENOTTY;
-
-	mutex_lock(&log->mutex);
-
-	switch (cmd) {
-	case LOGGER_GET_LOG_BUF_SIZE:
-		ret = log->size;
-		break;
-	case LOGGER_GET_LOG_LEN:
-		if (!(file->f_mode & FMODE_READ)) {
-			ret = -EBADF;
-			break;
-		}
-		reader = file->private_data;
-		if (log->w_off >= reader->r_off)
-			ret = log->w_off - reader->r_off;
-		else
-			ret = (log->size - reader->r_off) + log->w_off;
-		break;
-	case LOGGER_GET_NEXT_ENTRY_LEN:
-		if (!(file->f_mode & FMODE_READ)) {
-			ret = -EBADF;
-			break;
-		}
-		reader = file->private_data;
-		if (log->w_off != reader->r_off)
-			ret = get_entry_len(log, reader->r_off);
-		else
-			ret = 0;
-		break;
-	case LOGGER_FLUSH_LOG:
-		if (!(file->f_mode & FMODE_WRITE)) {
-			ret = -EBADF;
-			break;
-		}
-		list_for_each_entry(reader, &log->readers, list)
-			reader->r_off = log->w_off;
-		log->head = log->w_off;
-		ret = 0;
-		break;
-	}
-
-	mutex_unlock(&log->mutex);
-
-	return ret;
-}
-
-static const struct file_operations logger_fops = {
-	.owner = THIS_MODULE,
-	.read = logger_read,
-	.aio_write = logger_aio_write,
-	.poll = logger_poll,
-	.unlocked_ioctl = logger_ioctl,
-	.compat_ioctl = logger_ioctl,
-	.open = logger_open,
-	.release = logger_release,
-};
-
-/*
- * Defines a log structure with name 'NAME' and a size of 'SIZE' bytes, which
- * must be a power of two, greater than LOGGER_ENTRY_MAX_LEN, and less than
- * LONG_MAX minus LOGGER_ENTRY_MAX_LEN.
- */
-#define DEFINE_LOGGER_DEVICE(VAR, NAME, SIZE) \
-static unsigned char _buf_ ## VAR[SIZE]; \
-static struct logger_log VAR = { \
-	.buffer = _buf_ ## VAR, \
-	.misc = { \
-		.minor = MISC_DYNAMIC_MINOR, \
-		.name = NAME, \
-		.fops = &logger_fops, \
-		.parent = NULL, \
-	}, \
-	.wq = __WAIT_QUEUE_HEAD_INITIALIZER(VAR .wq), \
-	.readers = LIST_HEAD_INIT(VAR .readers), \
-	.mutex = __MUTEX_INITIALIZER(VAR .mutex), \
-	.w_off = 0, \
-	.head = 0, \
-	.size = SIZE, \
-};
-
-DEFINE_LOGGER_DEVICE(log_main, LOGGER_LOG_MAIN, 64*1024)
-DEFINE_LOGGER_DEVICE(log_events, LOGGER_LOG_EVENTS, 256*1024)
-DEFINE_LOGGER_DEVICE(log_radio, LOGGER_LOG_RADIO, 64*1024)
-
-static struct logger_log *get_log_from_minor(int minor)
-{
-	if (log_main.misc.minor == minor)
-		return &log_main;
-	if (log_events.misc.minor == minor)
-		return &log_events;
-	if (log_radio.misc.minor == minor)
-		return &log_radio;
-	return NULL;
-}
-
-static int __init init_log(struct logger_log *log)
-{
-	int ret;
-
-	ret = misc_register(&log->misc);
-	if (unlikely(ret)) {
-		printk(KERN_ERR "logger: failed to register misc "
-		       "device for log '%s'!\n", log->misc.name);
-		return ret;
-	}
-
-	printk(KERN_INFO "logger: created %luK log '%s'\n",
-	       (unsigned long) log->size >> 10, log->misc.name);
-
-	return 0;
-}
-
-static int __init logger_init(void)
-{
-	int ret;
-
-	ret = init_log(&log_main);
-	if (unlikely(ret))
-		goto out;
-
-	ret = init_log(&log_events);
-	if (unlikely(ret))
-		goto out;
-
-	ret = init_log(&log_radio);
-	if (unlikely(ret))
-		goto out;
-
-out:
-	return ret;
-}
-device_initcall(logger_init);

drivers/staging/android/logger.h

-/* include/linux/logger.h
- *
- * Copyright (C) 2007-2008 Google, Inc.
- * Author: Robert Love <rlove@android.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef _LINUX_LOGGER_H
-#define _LINUX_LOGGER_H
-
-#include <linux/types.h>
-#include <linux/ioctl.h>
-
-struct logger_entry {
-	__u16		len;	/* length of the payload */
-	__u16		__pad;	/* no matter what, we get 2 bytes of padding */
-	__s32		pid;	/* generating process's pid */
-	__s32		tid;	/* generating process's tid */
-	__s32		sec;	/* seconds since Epoch */
-	__s32		nsec;	/* nanoseconds */
-	char		msg[0];	/* the entry's payload */
-};
-
-#define LOGGER_LOG_RADIO	"log_radio"	/* radio-related messages */
-#define LOGGER_LOG_EVENTS	"log_events"	/* system/hardware events */
-#define LOGGER_LOG_MAIN		"log_main"	/* everything else */
-
-#define LOGGER_ENTRY_MAX_LEN		(4*1024)
-#define LOGGER_ENTRY_MAX_PAYLOAD	\
-	(LOGGER_ENTRY_MAX_LEN - sizeof(struct logger_entry))
-
-#define __LOGGERIO	0xAE
-
-#define LOGGER_GET_LOG_BUF_SIZE		_IO(__LOGGERIO, 1) /* size of log */
-#define LOGGER_GET_LOG_LEN		_IO(__LOGGERIO, 2) /* used log len */
-#define LOGGER_GET_NEXT_ENTRY_LEN	_IO(__LOGGERIO, 3) /* next entry len */
-#define LOGGER_FLUSH_LOG		_IO(__LOGGERIO, 4) /* flush log */
-
-#endif /* _LINUX_LOGGER_H */

drivers/staging/android/timed_gpio.h

-/* include/linux/timed_gpio.h
- *
- * Copyright (C) 2008 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
-*/
-
-#ifndef _LINUX_TIMED_GPIO_H
-#define _LINUX_TIMED_GPIO_H
-
-#define TIMED_GPIO_NAME "timed-gpio"
-
-struct timed_gpio {
-	const char *name;
-	unsigned 	gpio;
-	int		max_timeout;
-	u8 		active_low;
-};
-
-struct timed_gpio_platform_data {
-	int 		num_gpios;
-	struct timed_gpio *gpios;
-};
-
-#endif