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drivers/firmware/dell_rbu.c
19 KB
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/* * 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. */ |
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#include <linux/init.h> #include <linux/module.h> #include <linux/string.h> #include <linux/errno.h> #include <linux/blkdev.h> |
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#include <linux/platform_device.h> |
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#include <linux/spinlock.h> #include <linux/moduleparam.h> #include <linux/firmware.h> #include <linux/dma-mapping.h> MODULE_AUTHOR("Abhay Salunke <abhay_salunke@dell.com>"); MODULE_DESCRIPTION("Driver for updating BIOS image on DELL systems"); MODULE_LICENSE("GPL"); |
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MODULE_VERSION("3.2"); |
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#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; |
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unsigned long num_packets; unsigned long packetsize; |
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unsigned long imagesize; |
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int entry_created; |
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} rbu_data; |
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static char image_type[MAX_IMAGE_LENGTH + 1] = "mono"; module_param_string(image_type, image_type, sizeof (image_type), 0); |
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MODULE_PARM_DESC(image_type, "BIOS image type. choose- mono or packet or init"); |
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|
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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"); |
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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; |
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static void init_packet_head(void) |
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{ INIT_LIST_HEAD(&packet_data_head.list); |
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rbu_data.packet_read_count = 0; rbu_data.num_packets = 0; rbu_data.packetsize = 0; |
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rbu_data.imagesize = 0; |
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} |
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static int create_packet(void *data, size_t length) |
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{ struct packet_data *newpacket; int ordernum = 0; |
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int retval = 0; unsigned int packet_array_size = 0; |
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void **invalid_addr_packet_array = NULL; void *packet_data_temp_buf = NULL; |
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unsigned int idx = 0; |
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pr_debug("create_packet: entry "); if (!rbu_data.packetsize) { pr_debug("create_packet: packetsize not specified "); |
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retval = -EINVAL; goto out_noalloc; |
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} |
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|
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spin_unlock(&rbu_data.lock); |
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newpacket = kzalloc(sizeof (struct packet_data), GFP_KERNEL); |
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|
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if (!newpacket) { printk(KERN_WARNING |
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"dell_rbu:%s: failed to allocate new " |
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"packet ", __func__); |
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retval = -ENOMEM; spin_lock(&rbu_data.lock); goto out_noalloc; |
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} ordernum = get_order(length); |
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|
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/* |
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* 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. |
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*/ |
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packet_array_size = max( (unsigned int)(allocation_floor / rbu_data.packetsize), (unsigned int)1); invalid_addr_packet_array = kzalloc(packet_array_size * sizeof(void*), GFP_KERNEL); |
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|
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if (!invalid_addr_packet_array) { |
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printk(KERN_WARNING |
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"dell_rbu:%s: failed to allocate " "invalid_addr_packet_array ", |
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__func__); |
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retval = -ENOMEM; spin_lock(&rbu_data.lock); goto out_alloc_packet; |
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} |
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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 " |
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"packet ", __func__); |
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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. ", (unsigned long)virt_to_phys( packet_data_temp_buf), allocation_floor); invalid_addr_packet_array[idx++] = packet_data_temp_buf; |
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packet_data_temp_buf = NULL; |
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} } spin_lock(&rbu_data.lock); newpacket->data = packet_data_temp_buf; pr_debug("create_packet: newpacket at physical addr %lx ", (unsigned long)virt_to_phys(newpacket->data)); /* packets may not have fixed size */ newpacket->length = length; |
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newpacket->ordernum = ordernum; ++rbu_data.num_packets; |
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/* initialize the newly created packet headers */ |
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INIT_LIST_HEAD(&newpacket->list); list_add_tail(&newpacket->list, &packet_data_head.list); |
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memcpy(newpacket->data, data, length); |
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pr_debug("create_packet: exit "); |
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out_alloc_packet_array: /* always free packet array */ for (;idx>0;idx--) { pr_debug("freeing unused packet below floor 0x%lx. ", (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; |
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} |
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static int packetize_data(const u8 *data, size_t length) |
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{ int rc = 0; |
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int done = 0; int packet_length; u8 *temp; u8 *end = (u8 *) data + length; |
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pr_debug("packetize_data: data length %zd ", length); |
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if (!rbu_data.packetsize) { printk(KERN_WARNING "dell_rbu: packetsize not specified "); return -EIO; } |
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|
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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))) |
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return rc; |
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|
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pr_debug("%p:%td ", temp, (end - temp)); |
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temp += packet_length; |
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} |
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rbu_data.imagesize = length; |
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return rc; } |
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static int do_packet_read(char *data, struct list_head *ptemp_list, |
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int length, int bytes_read, int *list_read_count) |
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{ 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; } |
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static int packet_read_list(char *data, size_t * pread_length) |
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{ 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, |
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remaining_bytes, bytes_read, &temp_count); |
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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; } |
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static void packet_empty_list(void) |
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{ 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 = |
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list_entry(ptemp_list, struct packet_data, list); |
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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); |
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free_pages((unsigned long) newpacket->data, newpacket->ordernum); |
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kfree(newpacket); } |
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rbu_data.packet_read_count = 0; rbu_data.num_packets = 0; |
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rbu_data.imagesize = 0; |
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} /* * img_update_free: Frees the buffer allocated for storing BIOS image * Always called with lock held and returned with lock held */ |
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static void img_update_free(void) |
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{ 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, |
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rbu_data.image_update_buffer_size); |
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if (rbu_data.dma_alloc == 1) dma_free_coherent(NULL, rbu_data.bios_image_size, |
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rbu_data.image_update_buffer, dell_rbu_dmaaddr); |
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else |
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free_pages((unsigned long) rbu_data.image_update_buffer, rbu_data.image_update_ordernum); |
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/* * 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. */ |
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static int img_update_realloc(unsigned long size) |
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{ 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 " |
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"check failed ", __func__); |
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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 = |
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(unsigned char *) __get_free_pages(GFP_KERNEL, ordernum); |
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img_buf_phys_addr = |
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(unsigned long) virt_to_phys(image_update_buffer); |
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if (img_buf_phys_addr > BIOS_SCAN_LIMIT) { |
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free_pages((unsigned long) image_update_buffer, ordernum); |
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ordernum = -1; image_update_buffer = dma_alloc_coherent(NULL, size, |
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&dell_rbu_dmaaddr, GFP_KERNEL); |
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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 = |
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rbu_data.image_update_buffer_size; |
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rbu_data.image_update_ordernum = ordernum; rbu_data.dma_alloc = dma_alloc; rc = 0; } else { pr_debug("Not enough memory for image update:" |
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"size = %ld ", size); |
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rc = -ENOMEM; } return rc; } |
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static ssize_t read_packet_data(char *buffer, loff_t pos, size_t count) |
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{ int retval; size_t bytes_left; size_t data_length; char *ptempBuf = buffer; |
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/* check to see if we have something to return */ if (rbu_data.num_packets == 0) { pr_debug("read_packet_data: no packets written "); retval = -ENOMEM; goto read_rbu_data_exit; } |
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if (pos > rbu_data.imagesize) { |
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retval = 0; printk(KERN_WARNING "dell_rbu:read_packet_data: " |
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"data underrun "); |
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goto read_rbu_data_exit; } |
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bytes_left = rbu_data.imagesize - pos; |
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data_length = min(bytes_left, count); if ((retval = packet_read_list(ptempBuf, &data_length)) < 0) goto read_rbu_data_exit; |
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if ((pos + count) > rbu_data.imagesize) { |
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rbu_data.packet_read_count = 0; /* this was the last copy */ retval = bytes_left; } else retval = count; read_rbu_data_exit: return retval; } |
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static ssize_t read_rbu_mono_data(char *buffer, loff_t pos, size_t count) |
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{ |
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/* check to see if we have something to return */ if ((rbu_data.image_update_buffer == NULL) || |
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(rbu_data.bios_image_size == 0)) { |
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pr_debug("read_rbu_data_mono: image_update_buffer %p ," |
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"bios_image_size %lu ", rbu_data.image_update_buffer, rbu_data.bios_image_size); |
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return -ENOMEM; |
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} |
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return memory_read_from_buffer(buffer, count, &pos, rbu_data.image_update_buffer, rbu_data.bios_image_size); |
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} |
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static ssize_t read_rbu_data(struct kobject *kobj, struct bin_attribute *bin_attr, char *buffer, loff_t pos, size_t count) |
6c54c28e6 [PATCH] dell_rbu:... |
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{ 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 "); spin_unlock(&rbu_data.lock); return ret_count; } |
dda8577fb [PATCH] dell_rbu ... |
543 |
static void callbackfn_rbu(const struct firmware *fw, void *context) |
e61c0e336 [PATCH] dell_rbu:... |
544 |
{ |
2c5608404 [PATCH] dell_rbu:... |
545 |
rbu_data.entry_created = 0; |
e61c0e336 [PATCH] dell_rbu:... |
546 |
|
2c5608404 [PATCH] dell_rbu:... |
547 |
if (!fw || !fw->size) |
e61c0e336 [PATCH] dell_rbu:... |
548 |
return; |
e61c0e336 [PATCH] dell_rbu:... |
549 550 551 552 553 554 555 |
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")) { |
ad6ce87e5 [PATCH] dell_rbu:... |
556 557 558 559 560 561 562 563 564 565 566 |
/* * 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. */ |
e61c0e336 [PATCH] dell_rbu:... |
567 |
packet_empty_list(); |
e61c0e336 [PATCH] dell_rbu:... |
568 569 570 571 |
} else pr_debug("invalid image type specified. "); spin_unlock(&rbu_data.lock); |
e61c0e336 [PATCH] dell_rbu:... |
572 |
} |
91a690295 sysfs: add parame... |
573 574 575 |
static ssize_t read_rbu_image_type(struct kobject *kobj, struct bin_attribute *bin_attr, char *buffer, loff_t pos, size_t count) |
6c54c28e6 [PATCH] dell_rbu:... |
576 577 578 |
{ int size = 0; if (!pos) |
81156928f dell_rbu: use scn... |
579 580 |
size = scnprintf(buffer, count, "%s ", image_type); |
6c54c28e6 [PATCH] dell_rbu:... |
581 582 |
return size; } |
91a690295 sysfs: add parame... |
583 584 585 |
static ssize_t write_rbu_image_type(struct kobject *kobj, struct bin_attribute *bin_attr, char *buffer, loff_t pos, size_t count) |
6c54c28e6 [PATCH] dell_rbu:... |
586 587 |
{ int rc = count; |
e61c0e336 [PATCH] dell_rbu:... |
588 589 |
int req_firm_rc = 0; int i; |
6c54c28e6 [PATCH] dell_rbu:... |
590 |
spin_lock(&rbu_data.lock); |
e61c0e336 [PATCH] dell_rbu:... |
591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 |
/* * Find the first newline or space */ for (i = 0; i < count; ++i) if (buffer[i] == ' ' || 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, &context, callbackfn_rbu); if (req_firm_rc) { printk(KERN_ERR "dell_rbu:%s request_firmware_nowait" |
eecd58536 firmware: replace... |
624 625 |
" failed %d ", __func__, rc); |
e61c0e336 [PATCH] dell_rbu:... |
626 627 628 629 630 631 632 633 634 635 636 637 |
rc = -EIO; } else rbu_data.entry_created = 1; spin_lock(&rbu_data.lock); } } else { printk(KERN_WARNING "dell_rbu: image_type is invalid "); spin_unlock(&rbu_data.lock); return -EINVAL; } |
6c54c28e6 [PATCH] dell_rbu:... |
638 639 640 641 |
/* we must free all previous allocations */ packet_empty_list(); img_update_free(); |
6c54c28e6 [PATCH] dell_rbu:... |
642 |
spin_unlock(&rbu_data.lock); |
6c54c28e6 [PATCH] dell_rbu:... |
643 |
|
e61c0e336 [PATCH] dell_rbu:... |
644 |
return rc; |
6c54c28e6 [PATCH] dell_rbu:... |
645 |
} |
91a690295 sysfs: add parame... |
646 647 648 |
static ssize_t read_rbu_packet_size(struct kobject *kobj, struct bin_attribute *bin_attr, char *buffer, loff_t pos, size_t count) |
ad6ce87e5 [PATCH] dell_rbu:... |
649 650 651 652 |
{ int size = 0; if (!pos) { spin_lock(&rbu_data.lock); |
81156928f dell_rbu: use scn... |
653 654 |
size = scnprintf(buffer, count, "%lu ", rbu_data.packetsize); |
ad6ce87e5 [PATCH] dell_rbu:... |
655 656 657 658 |
spin_unlock(&rbu_data.lock); } return size; } |
91a690295 sysfs: add parame... |
659 660 661 |
static ssize_t write_rbu_packet_size(struct kobject *kobj, struct bin_attribute *bin_attr, char *buffer, loff_t pos, size_t count) |
ad6ce87e5 [PATCH] dell_rbu:... |
662 663 664 665 666 667 668 669 670 671 672 |
{ 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; } |
6c54c28e6 [PATCH] dell_rbu:... |
673 |
static struct bin_attribute rbu_data_attr = { |
7b595756e sysfs: kill unnec... |
674 |
.attr = {.name = "data", .mode = 0444}, |
6c54c28e6 [PATCH] dell_rbu:... |
675 676 677 678 |
.read = read_rbu_data, }; static struct bin_attribute rbu_image_type_attr = { |
7b595756e sysfs: kill unnec... |
679 |
.attr = {.name = "image_type", .mode = 0644}, |
6c54c28e6 [PATCH] dell_rbu:... |
680 681 682 |
.read = read_rbu_image_type, .write = write_rbu_image_type, }; |
ad6ce87e5 [PATCH] dell_rbu:... |
683 |
static struct bin_attribute rbu_packet_size_attr = { |
7b595756e sysfs: kill unnec... |
684 |
.attr = {.name = "packet_size", .mode = 0644}, |
ad6ce87e5 [PATCH] dell_rbu:... |
685 686 687 |
.read = read_rbu_packet_size, .write = write_rbu_packet_size, }; |
dda8577fb [PATCH] dell_rbu ... |
688 |
static int __init dcdrbu_init(void) |
6c54c28e6 [PATCH] dell_rbu:... |
689 |
{ |
6897083ab [PATCH] dell_rbu:... |
690 |
int rc; |
6c54c28e6 [PATCH] dell_rbu:... |
691 692 693 |
spin_lock_init(&rbu_data.lock); init_packet_head(); |
6897083ab [PATCH] dell_rbu:... |
694 695 |
rbu_device = platform_device_register_simple("dell_rbu", -1, NULL, 0); if (IS_ERR(rbu_device)) { |
6c54c28e6 [PATCH] dell_rbu:... |
696 |
printk(KERN_ERR |
e61c0e336 [PATCH] dell_rbu:... |
697 |
"dell_rbu:%s:platform_device_register_simple " |
eecd58536 firmware: replace... |
698 699 |
"failed ", __func__); |
6897083ab [PATCH] dell_rbu:... |
700 |
return PTR_ERR(rbu_device); |
6c54c28e6 [PATCH] dell_rbu:... |
701 |
} |
41bfcfd9a [PATCH] firmware/... |
702 703 704 705 706 707 708 |
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, |
ad6ce87e5 [PATCH] dell_rbu:... |
709 |
&rbu_packet_size_attr); |
41bfcfd9a [PATCH] firmware/... |
710 711 |
if (rc) goto out_imtype; |
6c54c28e6 [PATCH] dell_rbu:... |
712 |
|
2c5608404 [PATCH] dell_rbu:... |
713 |
rbu_data.entry_created = 0; |
41bfcfd9a [PATCH] firmware/... |
714 |
return 0; |
6c54c28e6 [PATCH] dell_rbu:... |
715 |
|
41bfcfd9a [PATCH] firmware/... |
716 717 718 719 720 721 722 |
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; |
6c54c28e6 [PATCH] dell_rbu:... |
723 |
} |
dda8577fb [PATCH] dell_rbu ... |
724 |
static __exit void dcdrbu_exit(void) |
6c54c28e6 [PATCH] dell_rbu:... |
725 726 727 728 729 730 731 732 733 734 |
{ 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); |
274b69335 [PATCH] dell_rbu:... |
735 736 737 |
/* vim:noet:ts=8:sw=8 */ |