diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/firmware/efi/capsule-loader.c | 41 |
1 files changed, 17 insertions, 24 deletions
diff --git a/drivers/firmware/efi/capsule-loader.c b/drivers/firmware/efi/capsule-loader.c index 37d3f6ec2d28..5b012a467d7d 100644 --- a/drivers/firmware/efi/capsule-loader.c +++ b/drivers/firmware/efi/capsule-loader.c @@ -21,13 +21,13 @@ #define NO_FURTHER_WRITE_ACTION -1 struct capsule_info { - bool header_obtained; - int reset_type; - long index; - size_t count; - size_t total_size; - struct page **pages; - size_t page_bytes_remain; + efi_capsule_header_t header; + int reset_type; + long index; + size_t count; + size_t total_size; + struct page **pages; + size_t page_bytes_remain; }; /** @@ -56,7 +56,6 @@ static void efi_free_all_buff_pages(struct capsule_info *cap_info) static int efi_capsule_setup_info(struct capsule_info *cap_info, void *kbuff, size_t hdr_bytes) { - efi_capsule_header_t *cap_hdr; size_t pages_needed; int ret; void *temp_page; @@ -66,8 +65,9 @@ static int efi_capsule_setup_info(struct capsule_info *cap_info, return 0; /* Reset back to the correct offset of header */ - cap_hdr = kbuff - cap_info->count; - pages_needed = ALIGN(cap_hdr->imagesize, PAGE_SIZE) >> PAGE_SHIFT; + kbuff -= cap_info->count; + memcpy(&cap_info->header, kbuff, sizeof(cap_info->header)); + pages_needed = ALIGN(cap_info->header.imagesize, PAGE_SIZE) / PAGE_SIZE; if (pages_needed == 0) { pr_err("invalid capsule size"); @@ -75,15 +75,16 @@ static int efi_capsule_setup_info(struct capsule_info *cap_info, } /* Check if the capsule binary supported */ - ret = efi_capsule_supported(cap_hdr->guid, cap_hdr->flags, - cap_hdr->imagesize, + ret = efi_capsule_supported(cap_info->header.guid, + cap_info->header.flags, + cap_info->header.imagesize, &cap_info->reset_type); if (ret) { pr_err("capsule not supported\n"); return ret; } - cap_info->total_size = cap_hdr->imagesize; + cap_info->total_size = cap_info->header.imagesize; temp_page = krealloc(cap_info->pages, pages_needed * sizeof(void *), GFP_KERNEL | __GFP_ZERO); @@ -91,7 +92,6 @@ static int efi_capsule_setup_info(struct capsule_info *cap_info, return -ENOMEM; cap_info->pages = temp_page; - cap_info->header_obtained = true; return 0; } @@ -104,15 +104,8 @@ static int efi_capsule_setup_info(struct capsule_info *cap_info, static ssize_t efi_capsule_submit_update(struct capsule_info *cap_info) { int ret; - void *cap_hdr_temp; - cap_hdr_temp = vmap(cap_info->pages, cap_info->index, - VM_MAP, PAGE_KERNEL); - if (!cap_hdr_temp) - return -ENOMEM; - - ret = efi_capsule_update(cap_hdr_temp, cap_info->pages); - vunmap(cap_hdr_temp); + ret = efi_capsule_update(&cap_info->header, cap_info->pages); if (ret) { pr_err("capsule update failed\n"); return ret; @@ -192,7 +185,7 @@ static ssize_t efi_capsule_write(struct file *file, const char __user *buff, cap_info->page_bytes_remain -= write_byte; /* Setup capsule binary info structure */ - if (!cap_info->header_obtained) { + if (cap_info->header.headersize == 0) { ret = efi_capsule_setup_info(cap_info, kbuff, cap_info->count + write_byte); if (ret) @@ -203,7 +196,7 @@ static ssize_t efi_capsule_write(struct file *file, const char __user *buff, kunmap(page); /* Submit the full binary to efi_capsule_update() API */ - if (cap_info->header_obtained && + if (cap_info->header.headersize > 0 && cap_info->count >= cap_info->total_size) { if (cap_info->count > cap_info->total_size) { pr_err("capsule upload size exceeded header defined size\n"); |