diff options
Diffstat (limited to 'fs/partitions/efi.c')
-rw-r--r-- | fs/partitions/efi.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/fs/partitions/efi.c b/fs/partitions/efi.c index 1bea610078b3..e7b07006bc41 100644 --- a/fs/partitions/efi.c +++ b/fs/partitions/efi.c | |||
@@ -152,7 +152,7 @@ last_lba(struct block_device *bdev) | |||
152 | } | 152 | } |
153 | 153 | ||
154 | static inline int | 154 | static inline int |
155 | pmbr_part_valid(struct partition *part, u64 lastlba) | 155 | pmbr_part_valid(struct partition *part) |
156 | { | 156 | { |
157 | if (part->sys_ind == EFI_PMBR_OSTYPE_EFI_GPT && | 157 | if (part->sys_ind == EFI_PMBR_OSTYPE_EFI_GPT && |
158 | le32_to_cpu(part->start_sect) == 1UL) | 158 | le32_to_cpu(part->start_sect) == 1UL) |
@@ -163,7 +163,6 @@ pmbr_part_valid(struct partition *part, u64 lastlba) | |||
163 | /** | 163 | /** |
164 | * is_pmbr_valid(): test Protective MBR for validity | 164 | * is_pmbr_valid(): test Protective MBR for validity |
165 | * @mbr: pointer to a legacy mbr structure | 165 | * @mbr: pointer to a legacy mbr structure |
166 | * @lastlba: last_lba for the whole device | ||
167 | * | 166 | * |
168 | * Description: Returns 1 if PMBR is valid, 0 otherwise. | 167 | * Description: Returns 1 if PMBR is valid, 0 otherwise. |
169 | * Validity depends on two things: | 168 | * Validity depends on two things: |
@@ -171,13 +170,13 @@ pmbr_part_valid(struct partition *part, u64 lastlba) | |||
171 | * 2) One partition of type 0xEE is found | 170 | * 2) One partition of type 0xEE is found |
172 | */ | 171 | */ |
173 | static int | 172 | static int |
174 | is_pmbr_valid(legacy_mbr *mbr, u64 lastlba) | 173 | is_pmbr_valid(legacy_mbr *mbr) |
175 | { | 174 | { |
176 | int i; | 175 | int i; |
177 | if (!mbr || le16_to_cpu(mbr->signature) != MSDOS_MBR_SIGNATURE) | 176 | if (!mbr || le16_to_cpu(mbr->signature) != MSDOS_MBR_SIGNATURE) |
178 | return 0; | 177 | return 0; |
179 | for (i = 0; i < 4; i++) | 178 | for (i = 0; i < 4; i++) |
180 | if (pmbr_part_valid(&mbr->partition_record[i], lastlba)) | 179 | if (pmbr_part_valid(&mbr->partition_record[i])) |
181 | return 1; | 180 | return 1; |
182 | return 0; | 181 | return 0; |
183 | } | 182 | } |
@@ -516,7 +515,7 @@ find_valid_gpt(struct block_device *bdev, gpt_header **gpt, gpt_entry **ptes) | |||
516 | int good_pgpt = 0, good_agpt = 0, good_pmbr = 0; | 515 | int good_pgpt = 0, good_agpt = 0, good_pmbr = 0; |
517 | gpt_header *pgpt = NULL, *agpt = NULL; | 516 | gpt_header *pgpt = NULL, *agpt = NULL; |
518 | gpt_entry *pptes = NULL, *aptes = NULL; | 517 | gpt_entry *pptes = NULL, *aptes = NULL; |
519 | legacy_mbr *legacymbr = NULL; | 518 | legacy_mbr *legacymbr; |
520 | u64 lastlba; | 519 | u64 lastlba; |
521 | if (!bdev || !gpt || !ptes) | 520 | if (!bdev || !gpt || !ptes) |
522 | return 0; | 521 | return 0; |
@@ -528,9 +527,8 @@ find_valid_gpt(struct block_device *bdev, gpt_header **gpt, gpt_entry **ptes) | |||
528 | if (legacymbr) { | 527 | if (legacymbr) { |
529 | read_lba(bdev, 0, (u8 *) legacymbr, | 528 | read_lba(bdev, 0, (u8 *) legacymbr, |
530 | sizeof (*legacymbr)); | 529 | sizeof (*legacymbr)); |
531 | good_pmbr = is_pmbr_valid(legacymbr, lastlba); | 530 | good_pmbr = is_pmbr_valid(legacymbr); |
532 | kfree(legacymbr); | 531 | kfree(legacymbr); |
533 | legacymbr=NULL; | ||
534 | } | 532 | } |
535 | if (!good_pmbr) | 533 | if (!good_pmbr) |
536 | goto fail; | 534 | goto fail; |