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-rw-r--r--drivers/firmware/efi/capsule-loader.c41
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");