firmware: dell_rbu: Move dell_rbu to drivers/platform/x86

Move dell_rbu to the more appropriate directory drivers/platform/x86.

Signed-off-by: Stuart Hayes <stuart.w.hayes@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

3 files changed, 0 insertions, 766 deletions

diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 6e83880046d7..02f39d20efce 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -145,18 +145,6 @@ config EFI_PCDP
 	  See DIG64_HCDPv20_042804.pdf available from
 	  <http://www.dig64.org/specifications/> 
 
-config DELL_RBU
-	tristate "BIOS update support for DELL systems via sysfs"
-	depends on X86
-	select FW_LOADER
-	select FW_LOADER_USER_HELPER
-	help
-	 Say m if you want to have the option of updating the BIOS for your
-	 DELL system. Note you need a Dell OpenManage or Dell Update package (DUP)
-	 supporting application to communicate with the BIOS regarding the new
-	 image for the image update to take effect.
-	 See <file:Documentation/dell_rbu.txt> for more details on the driver.
-
 config DCDBAS
 	tristate "Dell Systems Management Base Driver"
 	depends on X86
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index e18a041cfc53..61887ba9df1d 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -11,7 +11,6 @@ obj-$(CONFIG_DMI)		+= dmi_scan.o
 obj-$(CONFIG_DMI_SYSFS)		+= dmi-sysfs.o
 obj-$(CONFIG_EDD)		+= edd.o
 obj-$(CONFIG_EFI_PCDP)		+= pcdp.o
-obj-$(CONFIG_DELL_RBU)          += dell_rbu.o
 obj-$(CONFIG_DCDBAS)		+= dcdbas.o
 obj-$(CONFIG_DMIID)		+= dmi-id.o
 obj-$(CONFIG_ISCSI_IBFT_FIND)	+= iscsi_ibft_find.o
diff --git a/drivers/firmware/dell_rbu.c b/drivers/firmware/dell_rbu.c
deleted file mode 100644
index ccefa84f7305..000000000000
--- a/drivers/firmware/dell_rbu.c
+++ /dev/null
@@ -1,753 +0,0 @@
-/*
- * dell_rbu.c
- * Bios Update driver for Dell systems
- * Author: Dell Inc
- *         Abhay Salunke <abhay_salunke@dell.com>
- *
- * Copyright (C) 2005 Dell Inc.
- *
- * Remote BIOS Update (rbu) driver is used for updating DELL BIOS by
- * creating entries in the /sys file systems on Linux 2.6 and higher
- * kernels. The driver supports two mechanism to update the BIOS namely
- * contiguous and packetized. Both these methods still require having some
- * application to set the CMOS bit indicating the BIOS to update itself
- * after a reboot.
- *
- * Contiguous method:
- * This driver writes the incoming data in a monolithic image by allocating
- * contiguous physical pages large enough to accommodate the incoming BIOS
- * image size.
- *
- * Packetized method:
- * The driver writes the incoming packet image by allocating a new packet
- * on every time the packet data is written. This driver requires an
- * application to break the BIOS image in to fixed sized packet chunks.
- *
- * See Documentation/dell_rbu.txt for more info.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License v2.0 as published by
- * the Free Software Foundation
- *
- * 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/init.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/blkdev.h>
-#include <linux/platform_device.h>
-#include <linux/spinlock.h>
-#include <linux/moduleparam.h>
-#include <linux/firmware.h>
-#include <linux/dma-mapping.h>
-#include <asm/set_memory.h>
-
-MODULE_AUTHOR("Abhay Salunke <abhay_salunke@dell.com>");
-MODULE_DESCRIPTION("Driver for updating BIOS image on DELL systems");
-MODULE_LICENSE("GPL");
-MODULE_VERSION("3.2");
-
-#define BIOS_SCAN_LIMIT 0xffffffff
-#define MAX_IMAGE_LENGTH 16
-static struct _rbu_data {
-	void *image_update_buffer;
-	unsigned long image_update_buffer_size;
-	unsigned long bios_image_size;
-	int image_update_ordernum;
-	int dma_alloc;
-	spinlock_t lock;
-	unsigned long packet_read_count;
-	unsigned long num_packets;
-	unsigned long packetsize;
-	unsigned long imagesize;
-	int entry_created;
-} rbu_data;
-
-static char image_type[MAX_IMAGE_LENGTH + 1] = "mono";
-module_param_string(image_type, image_type, sizeof (image_type), 0);
-MODULE_PARM_DESC(image_type,
-	"BIOS image type. choose- mono or packet or init");
-
-static unsigned long allocation_floor = 0x100000;
-module_param(allocation_floor, ulong, 0644);
-MODULE_PARM_DESC(allocation_floor,
-    "Minimum address for allocations when using Packet mode");
-
-struct packet_data {
-	struct list_head list;
-	size_t length;
-	void *data;
-	int ordernum;
-};
-
-static struct packet_data packet_data_head;
-
-static struct platform_device *rbu_device;
-static int context;
-static dma_addr_t dell_rbu_dmaaddr;
-
-static void init_packet_head(void)
-{
-	INIT_LIST_HEAD(&packet_data_head.list);
-	rbu_data.packet_read_count = 0;
-	rbu_data.num_packets = 0;
-	rbu_data.packetsize = 0;
-	rbu_data.imagesize = 0;
-}
-
-static int create_packet(void *data, size_t length)
-{
-	struct packet_data *newpacket;
-	int ordernum = 0;
-	int retval = 0;
-	unsigned int packet_array_size = 0;
-	void **invalid_addr_packet_array = NULL;
-	void *packet_data_temp_buf = NULL;
-	unsigned int idx = 0;
-
-	pr_debug("create_packet: entry \n");
-
-	if (!rbu_data.packetsize) {
-		pr_debug("create_packet: packetsize not specified\n");
-		retval = -EINVAL;
-		goto out_noalloc;
-	}
-
-	spin_unlock(&rbu_data.lock);
-
-	newpacket = kzalloc(sizeof (struct packet_data), GFP_KERNEL);
-
-	if (!newpacket) {
-		printk(KERN_WARNING
-			"dell_rbu:%s: failed to allocate new "
-			"packet\n", __func__);
-		retval = -ENOMEM;
-		spin_lock(&rbu_data.lock);
-		goto out_noalloc;
-	}
-
-	ordernum = get_order(length);
-
-	/*
-	 * BIOS errata mean we cannot allocate packets below 1MB or they will
-	 * be overwritten by BIOS.
-	 *
-	 * array to temporarily hold packets
-	 * that are below the allocation floor
-	 *
-	 * NOTE: very simplistic because we only need the floor to be at 1MB
-	 *       due to BIOS errata. This shouldn't be used for higher floors
-	 *       or you will run out of mem trying to allocate the array.
-	 */
-	packet_array_size = max(
-	       		(unsigned int)(allocation_floor / rbu_data.packetsize),
-			(unsigned int)1);
-	invalid_addr_packet_array = kcalloc(packet_array_size, sizeof(void *),
-						GFP_KERNEL);
-
-	if (!invalid_addr_packet_array) {
-		printk(KERN_WARNING
-			"dell_rbu:%s: failed to allocate "
-			"invalid_addr_packet_array \n",
-			__func__);
-		retval = -ENOMEM;
-		spin_lock(&rbu_data.lock);
-		goto out_alloc_packet;
-	}
-
-	while (!packet_data_temp_buf) {
-		packet_data_temp_buf = (unsigned char *)
-			__get_free_pages(GFP_KERNEL, ordernum);
-		if (!packet_data_temp_buf) {
-			printk(KERN_WARNING
-				"dell_rbu:%s: failed to allocate new "
-				"packet\n", __func__);
-			retval = -ENOMEM;
-			spin_lock(&rbu_data.lock);
-			goto out_alloc_packet_array;
-		}
-
-		if ((unsigned long)virt_to_phys(packet_data_temp_buf)
-				< allocation_floor) {
-			pr_debug("packet 0x%lx below floor at 0x%lx.\n",
-					(unsigned long)virt_to_phys(
-						packet_data_temp_buf),
-					allocation_floor);
-			invalid_addr_packet_array[idx++] = packet_data_temp_buf;
-			packet_data_temp_buf = NULL;
-		}
-	}
-	/*
-	 * set to uncachable or it may never get written back before reboot
-	 */
-	set_memory_uc((unsigned long)packet_data_temp_buf, 1 << ordernum);
-
-	spin_lock(&rbu_data.lock);
-
-	newpacket->data = packet_data_temp_buf;
-
-	pr_debug("create_packet: newpacket at physical addr %lx\n",
-		(unsigned long)virt_to_phys(newpacket->data));
-
-	/* packets may not have fixed size */
-	newpacket->length = length;
-	newpacket->ordernum = ordernum;
-	++rbu_data.num_packets;
-
-	/* initialize the newly created packet headers */
-	INIT_LIST_HEAD(&newpacket->list);
-	list_add_tail(&newpacket->list, &packet_data_head.list);
-
-	memcpy(newpacket->data, data, length);
-
-	pr_debug("create_packet: exit \n");
-
-out_alloc_packet_array:
-	/* always free packet array */
-	for (;idx>0;idx--) {
-		pr_debug("freeing unused packet below floor 0x%lx.\n",
-			(unsigned long)virt_to_phys(
-				invalid_addr_packet_array[idx-1]));
-		free_pages((unsigned long)invalid_addr_packet_array[idx-1],
-			ordernum);
-	}
-	kfree(invalid_addr_packet_array);
-
-out_alloc_packet:
-	/* if error, free data */
-	if (retval)
-		kfree(newpacket);
-
-out_noalloc:
-	return retval;
-}
-
-static int packetize_data(const u8 *data, size_t length)
-{
-	int rc = 0;
-	int done = 0;
-	int packet_length;
-	u8 *temp;
-	u8 *end = (u8 *) data + length;
-	pr_debug("packetize_data: data length %zd\n", length);
-	if (!rbu_data.packetsize) {
-		printk(KERN_WARNING
-			"dell_rbu: packetsize not specified\n");
-		return -EIO;
-	}
-
-	temp = (u8 *) data;
-
-	/* packetize the hunk */
-	while (!done) {
-		if ((temp + rbu_data.packetsize) < end)
-			packet_length = rbu_data.packetsize;
-		else {
-			/* this is the last packet */
-			packet_length = end - temp;
-			done = 1;
-		}
-
-		if ((rc = create_packet(temp, packet_length)))
-			return rc;
-
-		pr_debug("%p:%td\n", temp, (end - temp));
-		temp += packet_length;
-	}
-
-	rbu_data.imagesize = length;
-
-	return rc;
-}
-
-static int do_packet_read(char *data, struct list_head *ptemp_list,
-	int length, int bytes_read, int *list_read_count)
-{
-	void *ptemp_buf;
-	struct packet_data *newpacket = NULL;
-	int bytes_copied = 0;
-	int j = 0;
-
-	newpacket = list_entry(ptemp_list, struct packet_data, list);
-	*list_read_count += newpacket->length;
-
-	if (*list_read_count > bytes_read) {
-		/* point to the start of unread data */
-		j = newpacket->length - (*list_read_count - bytes_read);
-		/* point to the offset in the packet buffer */
-		ptemp_buf = (u8 *) newpacket->data + j;
-		/*
-		 * check if there is enough room in
-		 * * the incoming buffer
-		 */
-		if (length > (*list_read_count - bytes_read))
-			/*
-			 * copy what ever is there in this
-			 * packet and move on
-			 */
-			bytes_copied = (*list_read_count - bytes_read);
-		else
-			/* copy the remaining */
-			bytes_copied = length;
-		memcpy(data, ptemp_buf, bytes_copied);
-	}
-	return bytes_copied;
-}
-
-static int packet_read_list(char *data, size_t * pread_length)
-{
-	struct list_head *ptemp_list;
-	int temp_count = 0;
-	int bytes_copied = 0;
-	int bytes_read = 0;
-	int remaining_bytes = 0;
-	char *pdest = data;
-
-	/* check if we have any packets */
-	if (0 == rbu_data.num_packets)
-		return -ENOMEM;
-
-	remaining_bytes = *pread_length;
-	bytes_read = rbu_data.packet_read_count;
-
-	ptemp_list = (&packet_data_head.list)->next;
-	while (!list_empty(ptemp_list)) {
-		bytes_copied = do_packet_read(pdest, ptemp_list,
-			remaining_bytes, bytes_read, &temp_count);
-		remaining_bytes -= bytes_copied;
-		bytes_read += bytes_copied;
-		pdest += bytes_copied;
-		/*
-		 * check if we reached end of buffer before reaching the
-		 * last packet
-		 */
-		if (remaining_bytes == 0)
-			break;
-
-		ptemp_list = ptemp_list->next;
-	}
-	/*finally set the bytes read */
-	*pread_length = bytes_read - rbu_data.packet_read_count;
-	rbu_data.packet_read_count = bytes_read;
-	return 0;
-}
-
-static void packet_empty_list(void)
-{
-	struct list_head *ptemp_list;
-	struct list_head *pnext_list;
-	struct packet_data *newpacket;
-
-	ptemp_list = (&packet_data_head.list)->next;
-	while (!list_empty(ptemp_list)) {
-		newpacket =
-			list_entry(ptemp_list, struct packet_data, list);
-		pnext_list = ptemp_list->next;
-		list_del(ptemp_list);
-		ptemp_list = pnext_list;
-		/*
-		 * zero out the RBU packet memory before freeing
-		 * to make sure there are no stale RBU packets left in memory
-		 */
-		memset(newpacket->data, 0, rbu_data.packetsize);
-		set_memory_wb((unsigned long)newpacket->data,
-			1 << newpacket->ordernum);
-		free_pages((unsigned long) newpacket->data,
-			newpacket->ordernum);
-		kfree(newpacket);
-	}
-	rbu_data.packet_read_count = 0;
-	rbu_data.num_packets = 0;
-	rbu_data.imagesize = 0;
-}
-
-/*
- * img_update_free: Frees the buffer allocated for storing BIOS image
- * Always called with lock held and returned with lock held
- */
-static void img_update_free(void)
-{
-	if (!rbu_data.image_update_buffer)
-		return;
-	/*
-	 * zero out this buffer before freeing it to get rid of any stale
-	 * BIOS image copied in memory.
-	 */
-	memset(rbu_data.image_update_buffer, 0,
-		rbu_data.image_update_buffer_size);
-	if (rbu_data.dma_alloc == 1)
-		dma_free_coherent(NULL, rbu_data.bios_image_size,
-			rbu_data.image_update_buffer, dell_rbu_dmaaddr);
-	else
-		free_pages((unsigned long) rbu_data.image_update_buffer,
-			rbu_data.image_update_ordernum);
-
-	/*
-	 * Re-initialize the rbu_data variables after a free
-	 */
-	rbu_data.image_update_ordernum = -1;
-	rbu_data.image_update_buffer = NULL;
-	rbu_data.image_update_buffer_size = 0;
-	rbu_data.bios_image_size = 0;
-	rbu_data.dma_alloc = 0;
-}
-
-/*
- * img_update_realloc: This function allocates the contiguous pages to
- * accommodate the requested size of data. The memory address and size
- * values are stored globally and on every call to this function the new
- * size is checked to see if more data is required than the existing size.
- * If true the previous memory is freed and new allocation is done to
- * accommodate the new size. If the incoming size is less then than the
- * already allocated size, then that memory is reused. This function is
- * called with lock held and returns with lock held.
- */
-static int img_update_realloc(unsigned long size)
-{
-	unsigned char *image_update_buffer = NULL;
-	unsigned long rc;
-	unsigned long img_buf_phys_addr;
-	int ordernum;
-	int dma_alloc = 0;
-
-	/*
-	 * check if the buffer of sufficient size has been
-	 * already allocated
-	 */
-	if (rbu_data.image_update_buffer_size >= size) {
-		/*
-		 * check for corruption
-		 */
-		if ((size != 0) && (rbu_data.image_update_buffer == NULL)) {
-			printk(KERN_ERR "dell_rbu:%s: corruption "
-				"check failed\n", __func__);
-			return -EINVAL;
-		}
-		/*
-		 * we have a valid pre-allocated buffer with
-		 * sufficient size
-		 */
-		return 0;
-	}
-
-	/*
-	 * free any previously allocated buffer
-	 */
-	img_update_free();
-
-	spin_unlock(&rbu_data.lock);
-
-	ordernum = get_order(size);
-	image_update_buffer =
-		(unsigned char *) __get_free_pages(GFP_KERNEL, ordernum);
-
-	img_buf_phys_addr =
-		(unsigned long) virt_to_phys(image_update_buffer);
-
-	if (img_buf_phys_addr > BIOS_SCAN_LIMIT) {
-		free_pages((unsigned long) image_update_buffer, ordernum);
-		ordernum = -1;
-		image_update_buffer = dma_alloc_coherent(NULL, size,
-			&dell_rbu_dmaaddr, GFP_KERNEL);
-		dma_alloc = 1;
-	}
-
-	spin_lock(&rbu_data.lock);
-
-	if (image_update_buffer != NULL) {
-		rbu_data.image_update_buffer = image_update_buffer;
-		rbu_data.image_update_buffer_size = size;
-		rbu_data.bios_image_size =
-			rbu_data.image_update_buffer_size;
-		rbu_data.image_update_ordernum = ordernum;
-		rbu_data.dma_alloc = dma_alloc;
-		rc = 0;
-	} else {
-		pr_debug("Not enough memory for image update:"
-			"size = %ld\n", size);
-		rc = -ENOMEM;
-	}
-
-	return rc;
-}
-
-static ssize_t read_packet_data(char *buffer, loff_t pos, size_t count)
-{
-	int retval;
-	size_t bytes_left;
-	size_t data_length;
-	char *ptempBuf = buffer;
-
-	/* check to see if we have something to return */
-	if (rbu_data.num_packets == 0) {
-		pr_debug("read_packet_data: no packets written\n");
-		retval = -ENOMEM;
-		goto read_rbu_data_exit;
-	}
-
-	if (pos > rbu_data.imagesize) {
-		retval = 0;
-		printk(KERN_WARNING "dell_rbu:read_packet_data: "
-			"data underrun\n");
-		goto read_rbu_data_exit;
-	}
-
-	bytes_left = rbu_data.imagesize - pos;
-	data_length = min(bytes_left, count);
-
-	if ((retval = packet_read_list(ptempBuf, &data_length)) < 0)
-		goto read_rbu_data_exit;
-
-	if ((pos + count) > rbu_data.imagesize) {
-		rbu_data.packet_read_count = 0;
-		/* this was the last copy */
-		retval = bytes_left;
-	} else
-		retval = count;
-
-      read_rbu_data_exit:
-	return retval;
-}
-
-static ssize_t read_rbu_mono_data(char *buffer, loff_t pos, size_t count)
-{
-	/* check to see if we have something to return */
-	if ((rbu_data.image_update_buffer == NULL) ||
-		(rbu_data.bios_image_size == 0)) {
-		pr_debug("read_rbu_data_mono: image_update_buffer %p ,"
-			"bios_image_size %lu\n",
-			rbu_data.image_update_buffer,
-			rbu_data.bios_image_size);
-		return -ENOMEM;
-	}
-
-	return memory_read_from_buffer(buffer, count, &pos,
-			rbu_data.image_update_buffer, rbu_data.bios_image_size);
-}
-
-static ssize_t read_rbu_data(struct file *filp, struct kobject *kobj,
-			     struct bin_attribute *bin_attr,
-			     char *buffer, loff_t pos, size_t count)
-{
-	ssize_t ret_count = 0;
-
-	spin_lock(&rbu_data.lock);
-
-	if (!strcmp(image_type, "mono"))
-		ret_count = read_rbu_mono_data(buffer, pos, count);
-	else if (!strcmp(image_type, "packet"))
-		ret_count = read_packet_data(buffer, pos, count);
-	else
-		pr_debug("read_rbu_data: invalid image type specified\n");
-
-	spin_unlock(&rbu_data.lock);
-	return ret_count;
-}
-
-static void callbackfn_rbu(const struct firmware *fw, void *context)
-{
-	rbu_data.entry_created = 0;
-
-	if (!fw)
-		return;
-
-	if (!fw->size)
-		goto out;
-
-	spin_lock(&rbu_data.lock);
-	if (!strcmp(image_type, "mono")) {
-		if (!img_update_realloc(fw->size))
-			memcpy(rbu_data.image_update_buffer,
-				fw->data, fw->size);
-	} else if (!strcmp(image_type, "packet")) {
-		/*
-		 * we need to free previous packets if a
-		 * new hunk of packets needs to be downloaded
-		 */
-		packet_empty_list();
-		if (packetize_data(fw->data, fw->size))
-			/* Incase something goes wrong when we are
-			 * in middle of packetizing the data, we
-			 * need to free up whatever packets might
-			 * have been created before we quit.
-			 */
-			packet_empty_list();
-	} else
-		pr_debug("invalid image type specified.\n");
-	spin_unlock(&rbu_data.lock);
- out:
-	release_firmware(fw);
-}
-
-static ssize_t read_rbu_image_type(struct file *filp, struct kobject *kobj,
-				   struct bin_attribute *bin_attr,
-				   char *buffer, loff_t pos, size_t count)
-{
-	int size = 0;
-	if (!pos)
-		size = scnprintf(buffer, count, "%s\n", image_type);
-	return size;
-}
-
-static ssize_t write_rbu_image_type(struct file *filp, struct kobject *kobj,
-				    struct bin_attribute *bin_attr,
-				    char *buffer, loff_t pos, size_t count)
-{
-	int rc = count;
-	int req_firm_rc = 0;
-	int i;
-	spin_lock(&rbu_data.lock);
-	/*
-	 * Find the first newline or space
-	 */
-	for (i = 0; i < count; ++i)
-		if (buffer[i] == '\n' || buffer[i] == ' ') {
-			buffer[i] = '\0';
-			break;
-		}
-	if (i == count)
-		buffer[count] = '\0';
-
-	if (strstr(buffer, "mono"))
-		strcpy(image_type, "mono");
-	else if (strstr(buffer, "packet"))
-		strcpy(image_type, "packet");
-	else if (strstr(buffer, "init")) {
-		/*
-		 * If due to the user error the driver gets in a bad
-		 * state where even though it is loaded , the
-		 * /sys/class/firmware/dell_rbu entries are missing.
-		 * to cover this situation the user can recreate entries
-		 * by writing init to image_type.
-		 */
-		if (!rbu_data.entry_created) {
-			spin_unlock(&rbu_data.lock);
-			req_firm_rc = request_firmware_nowait(THIS_MODULE,
-				FW_ACTION_NOHOTPLUG, "dell_rbu",
-				&rbu_device->dev, GFP_KERNEL, &context,
-				callbackfn_rbu);
-			if (req_firm_rc) {
-				printk(KERN_ERR
-					"dell_rbu:%s request_firmware_nowait"
-					" failed %d\n", __func__, rc);
-				rc = -EIO;
-			} else
-				rbu_data.entry_created = 1;
-
-			spin_lock(&rbu_data.lock);
-		}
-	} else {
-		printk(KERN_WARNING "dell_rbu: image_type is invalid\n");
-		spin_unlock(&rbu_data.lock);
-		return -EINVAL;
-	}
-
-	/* we must free all previous allocations */
-	packet_empty_list();
-	img_update_free();
-	spin_unlock(&rbu_data.lock);
-
-	return rc;
-}
-
-static ssize_t read_rbu_packet_size(struct file *filp, struct kobject *kobj,
-				    struct bin_attribute *bin_attr,
-				    char *buffer, loff_t pos, size_t count)
-{
-	int size = 0;
-	if (!pos) {
-		spin_lock(&rbu_data.lock);
-		size = scnprintf(buffer, count, "%lu\n", rbu_data.packetsize);
-		spin_unlock(&rbu_data.lock);
-	}
-	return size;
-}
-
-static ssize_t write_rbu_packet_size(struct file *filp, struct kobject *kobj,
-				     struct bin_attribute *bin_attr,
-				     char *buffer, loff_t pos, size_t count)
-{
-	unsigned long temp;
-	spin_lock(&rbu_data.lock);
-	packet_empty_list();
-	sscanf(buffer, "%lu", &temp);
-	if (temp < 0xffffffff)
-		rbu_data.packetsize = temp;
-
-	spin_unlock(&rbu_data.lock);
-	return count;
-}
-
-static struct bin_attribute rbu_data_attr = {
-	.attr = {.name = "data", .mode = 0444},
-	.read = read_rbu_data,
-};
-
-static struct bin_attribute rbu_image_type_attr = {
-	.attr = {.name = "image_type", .mode = 0644},
-	.read = read_rbu_image_type,
-	.write = write_rbu_image_type,
-};
-
-static struct bin_attribute rbu_packet_size_attr = {
-	.attr = {.name = "packet_size", .mode = 0644},
-	.read = read_rbu_packet_size,
-	.write = write_rbu_packet_size,
-};
-
-static int __init dcdrbu_init(void)
-{
-	int rc;
-	spin_lock_init(&rbu_data.lock);
-
-	init_packet_head();
-	rbu_device = platform_device_register_simple("dell_rbu", -1, NULL, 0);
-	if (IS_ERR(rbu_device)) {
-		printk(KERN_ERR
-			"dell_rbu:%s:platform_device_register_simple "
-			"failed\n", __func__);
-		return PTR_ERR(rbu_device);
-	}
-
-	rc = sysfs_create_bin_file(&rbu_device->dev.kobj, &rbu_data_attr);
-	if (rc)
-		goto out_devreg;
-	rc = sysfs_create_bin_file(&rbu_device->dev.kobj, &rbu_image_type_attr);
-	if (rc)
-		goto out_data;
-	rc = sysfs_create_bin_file(&rbu_device->dev.kobj,
-		&rbu_packet_size_attr);
-	if (rc)
-		goto out_imtype;
-
-	rbu_data.entry_created = 0;
-	return 0;
-
-out_imtype:
-	sysfs_remove_bin_file(&rbu_device->dev.kobj, &rbu_image_type_attr);
-out_data:
-	sysfs_remove_bin_file(&rbu_device->dev.kobj, &rbu_data_attr);
-out_devreg:
-	platform_device_unregister(rbu_device);
-	return rc;
-}
-
-static __exit void dcdrbu_exit(void)
-{
-	spin_lock(&rbu_data.lock);
-	packet_empty_list();
-	img_update_free();
-	spin_unlock(&rbu_data.lock);
-	platform_device_unregister(rbu_device);
-}
-
-module_exit(dcdrbu_exit);
-module_init(dcdrbu_init);
-
-/* vim:noet:ts=8:sw=8
-*/