- Moved assignments out of 'if' conditions.
- Removed trailing whitespaces.
- Fixed indentation and spacing inconsistencies.
- Replaced 'unsigned' with 'unsigned int'.
These changes improve readability and follow kernel coding style guidelines.
Reviewed-by: Manish Narani <manish.narani@xxxxxxxxx>
Signed-off-by: Dishank Jogi <dishank.jogi@xxxxxxxxx>
---
block/partitions/efi.c | 153 +++++++++++++++++++++--------------------
1 file changed, 80 insertions(+), 73 deletions(-)
diff --git a/block/partitions/efi.c b/block/partitions/efi.c
index 7acba66eed48..c821ad07a80c 100644
--- a/block/partitions/efi.c
+++ b/block/partitions/efi.c
@@ -23,7 +23,7 @@
* - Ported to 2.5.7-pre1 and 2.5.7-dj2
* - Applied patch to avoid fault in alternate header handling
* - cleaned up find_valid_gpt
- * - On-disk structure and copy in memory is *always* LE now -
+ * - On-disk structure and copy in memory is *always* LE now -
* swab fields as needed
* - remove print_gpt_header()
* - only use first max_p partition entries, to keep the kernel minor number
@@ -40,7 +40,7 @@
* - moved le_efi_guid_to_cpus() back into this file. GPT is the only
* thing that keeps EFI GUIDs on disk.
* - Changed gpt structure names and members to be simpler and more Linux-like.
- *
+ *
* Wed Oct 17 2001 Matt Domsch <Matt_Domsch@xxxxxxxx>
* - Removed CONFIG_DEVFS_VOLUMES_UUID code entirely per Martin Wilck
*
@@ -65,7 +65,7 @@
*
* Wed Jun 6 2001 Martin Wilck <Martin.Wilck@xxxxxxxxxxxxxxxxxxx>
* - added devfs volume UUID support (/dev/volumes/uuids) for
- * mounting file systems by the partition GUID.
+ * mounting file systems by the partition GUID.
*
* Tue Dec 5 2000 Matt Domsch <Matt_Domsch@xxxxxxxx>
* - Moved crc32() to linux/lib, added efi_crc32().
@@ -110,7 +110,7 @@ __setup("gpt", force_gpt_fn);
* @len: length of buf
*
* Description: Returns EFI-style CRC32 value for @buf
- *
+ *
* This function uses the little endian Ethernet polynomial
* but seeds the function with ~0, and xor's with ~0 at the end.
* Note, the EFI Specification, v1.02, has a reference to
@@ -125,7 +125,7 @@ efi_crc32(const void *buf, unsigned long len)
/**
* last_lba(): return number of last logical block of device
* @disk: block device
- *
+ *
* Description: Returns last LBA value on success, 0 on error.
* This is stored (by sd and ide-geometry) in
* the part[0] entry for this disk, and is the number of
@@ -240,12 +240,13 @@ static size_t read_lba(struct parsed_partitions *state,
(queue_logical_block_size(state->disk->queue) / 512);
if (!buffer || lba > last_lba(state->disk))
- return 0;
+ return 0;
while (count) {
int copied = 512;
Sector sect;
unsigned char *data = read_part_sector(state, n++, §);
+
if (!data)
break;
if (copied > count)
@@ -253,7 +254,7 @@ static size_t read_lba(struct parsed_partitions *state,
memcpy(buffer, data, copied);
put_dev_sector(sect);
buffer += copied;
- totalreadcount +=copied;
+ totalreadcount += copied;
count -= copied;
}
return totalreadcount;
@@ -263,7 +264,7 @@ static size_t read_lba(struct parsed_partitions *state,
* alloc_read_gpt_entries(): reads partition entries from disk
* @state: disk parsed partitions
* @gpt: GPT header
- *
+ *
* Description: Returns ptes on success, NULL on error.
* Allocates space for PTEs based on information found in @gpt.
* Notes: remember to free pte when you're done!
@@ -278,7 +279,7 @@ static gpt_entry *alloc_read_gpt_entries(struct parsed_partitions *state,
return NULL;
count = (size_t)le32_to_cpu(gpt->num_partition_entries) *
- le32_to_cpu(gpt->sizeof_partition_entry);
+ le32_to_cpu(gpt->sizeof_partition_entry);
if (!count)
return NULL;
pte = kmalloc(count, GFP_KERNEL);
@@ -288,7 +289,7 @@ static gpt_entry *alloc_read_gpt_entries(struct parsed_partitions *state,
if (read_lba(state, le64_to_cpu(gpt->partition_entry_lba),
(u8 *) pte, count) < count) {
kfree(pte);
- pte=NULL;
+ pte = NULL;
return NULL;
}
return pte;
@@ -298,7 +299,7 @@ static gpt_entry *alloc_read_gpt_entries(struct parsed_partitions *state,
* alloc_read_gpt_header(): Allocates GPT header, reads into it from disk
* @state: disk parsed partitions
* @lba: the Logical Block Address of the partition table
- *
+ *
* Description: returns GPT header on success, NULL on error. Allocates
* and fills a GPT header starting at @ from @state->disk.
* Note: remember to free gpt when finished with it.
@@ -307,7 +308,7 @@ static gpt_header *alloc_read_gpt_header(struct parsed_partitions *state,
u64 lba)
{
gpt_header *gpt;
- unsigned ssz = queue_logical_block_size(state->disk->queue);
+ unsigned int ssz = queue_logical_block_size(state->disk->queue);
gpt = kmalloc(ssz, GFP_KERNEL);
if (!gpt)
@@ -315,7 +316,7 @@ static gpt_header *alloc_read_gpt_header(struct parsed_partitions *state,
if (read_lba(state, lba, (u8 *) gpt, ssz) < ssz) {
kfree(gpt);
- gpt=NULL;
+ gpt = NULL;
return NULL;
}
@@ -340,7 +341,8 @@ static int is_gpt_valid(struct parsed_partitions *state, u64 lba,
if (!ptes)
return 0;
- if (!(*gpt = alloc_read_gpt_header(state, lba)))
+ *gpt = alloc_read_gpt_header(state, lba);
+ if (!*gpt)
return 0;
/* Check the GUID Partition Table signature */
@@ -427,7 +429,8 @@ static int is_gpt_valid(struct parsed_partitions *state, u64 lba,
goto fail;
}
- if (!(*ptes = alloc_read_gpt_entries(state, *gpt)))
+ *ptes = alloc_read_gpt_entries(state, *gpt);
+ if (!*ptes)
goto fail;
/* Check the GUID Partition Entry Array CRC */
@@ -475,69 +478,74 @@ is_pte_valid(const gpt_entry *pte, const u64 lastlba)
*
* Description: Returns nothing. Sanity checks pgpt and agpt fields
* and prints warnings on discrepancies.
- *
+ *
*/
static void
compare_gpts(gpt_header *pgpt, gpt_header *agpt, u64 lastlba)
{
int error_found = 0;
+
if (!pgpt || !agpt)
return;
+
if (le64_to_cpu(pgpt->my_lba) != le64_to_cpu(agpt->alternate_lba)) {
pr_warn("GPT:Primary header LBA != Alt. header alternate_lba\n");
pr_warn("GPT:%lld != %lld\n",
- (unsigned long long)le64_to_cpu(pgpt->my_lba),
- (unsigned long long)le64_to_cpu(agpt->alternate_lba));
+ (unsigned long long)le64_to_cpu(pgpt->my_lba),
+ (unsigned long long)le64_to_cpu(agpt->alternate_lba));
error_found++;
}
if (le64_to_cpu(pgpt->alternate_lba) != le64_to_cpu(agpt->my_lba)) {
pr_warn("GPT:Primary header alternate_lba != Alt. header my_lba\n");
pr_warn("GPT:%lld != %lld\n",
- (unsigned long long)le64_to_cpu(pgpt->alternate_lba),
- (unsigned long long)le64_to_cpu(agpt->my_lba));
+ (unsigned long long)le64_to_cpu(pgpt->alternate_lba),
+ (unsigned long long)le64_to_cpu(agpt->my_lba));
error_found++;
}
+
if (le64_to_cpu(pgpt->first_usable_lba) !=
- le64_to_cpu(agpt->first_usable_lba)) {
+ le64_to_cpu(agpt->first_usable_lba)) {
pr_warn("GPT:first_usable_lbas don't match.\n");
pr_warn("GPT:%lld != %lld\n",
- (unsigned long long)le64_to_cpu(pgpt->first_usable_lba),
- (unsigned long long)le64_to_cpu(agpt->first_usable_lba));
+ (unsigned long long)le64_to_cpu(pgpt->first_usable_lba),
+ (unsigned long long)le64_to_cpu(agpt->first_usable_lba));
error_found++;
}
+
if (le64_to_cpu(pgpt->last_usable_lba) !=
- le64_to_cpu(agpt->last_usable_lba)) {
+ le64_to_cpu(agpt->last_usable_lba)) {
pr_warn("GPT:last_usable_lbas don't match.\n");
pr_warn("GPT:%lld != %lld\n",
- (unsigned long long)le64_to_cpu(pgpt->last_usable_lba),
- (unsigned long long)le64_to_cpu(agpt->last_usable_lba));
+ (unsigned long long)le64_to_cpu(pgpt->last_usable_lba),
+ (unsigned long long)le64_to_cpu(agpt->last_usable_lba));
error_found++;
}
if (efi_guidcmp(pgpt->disk_guid, agpt->disk_guid)) {
pr_warn("GPT:disk_guids don't match.\n");
error_found++;
}
- if (le32_to_cpu(pgpt->num_partition_entries) !=
- le32_to_cpu(agpt->num_partition_entries)) {
+ if (le32_to_cpu(pgpt->num_partition_entries)
+ != le32_to_cpu(agpt->num_partition_entries)) {
pr_warn("GPT:num_partition_entries don't match: "
- "0x%x != 0x%x\n",
- le32_to_cpu(pgpt->num_partition_entries),
- le32_to_cpu(agpt->num_partition_entries));
+ "0x%x != 0x%x\n",
+ le32_to_cpu(pgpt->num_partition_entries),
+ le32_to_cpu(agpt->num_partition_entries));
error_found++;
}
+
if (le32_to_cpu(pgpt->sizeof_partition_entry) !=
- le32_to_cpu(agpt->sizeof_partition_entry)) {
- pr_warn("GPT:sizeof_partition_entry values don't match: "
+ le32_to_cpu(agpt->sizeof_partition_entry)) {
+ pr_warn("GPT:sizeof_partition_entry values don't match: "
"0x%x != 0x%x\n",
- le32_to_cpu(pgpt->sizeof_partition_entry),
+ le32_to_cpu(pgpt->sizeof_partition_entry),
le32_to_cpu(agpt->sizeof_partition_entry));
error_found++;
}
if (le32_to_cpu(pgpt->partition_entry_array_crc32) !=
- le32_to_cpu(agpt->partition_entry_array_crc32)) {
+ le32_to_cpu(agpt->partition_entry_array_crc32)) {
pr_warn("GPT:partition_entry_array_crc32 values don't match: "
"0x%x != 0x%x\n",
- le32_to_cpu(pgpt->partition_entry_array_crc32),
+ le32_to_cpu(pgpt->partition_entry_array_crc32),
le32_to_cpu(agpt->partition_entry_array_crc32));
error_found++;
}
@@ -559,7 +567,6 @@ compare_gpts(gpt_header *pgpt, gpt_header *agpt, u64 lastlba)
if (error_found)
pr_warn("GPT: Use GNU Parted to correct GPT errors.\n");
- return;
}
/**
@@ -594,8 +601,8 @@ static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt,
return 0;
lastlba = last_lba(state->disk);
- if (!force_gpt) {
- /* This will be added to the EFI Spec. per Intel after v1.02. */
+ if (!force_gpt) {
+ /* This will be added to the EFI Spec. per Intel after v1.02. */
legacymbr = kzalloc(sizeof(*legacymbr), GFP_KERNEL);
if (!legacymbr)
goto fail;
@@ -614,12 +621,13 @@ static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt,
good_pgpt = is_gpt_valid(state, GPT_PRIMARY_PARTITION_TABLE_LBA,
&pgpt, &pptes);
- if (good_pgpt)
+ if (good_pgpt)
good_agpt = is_gpt_valid(state,
- le64_to_cpu(pgpt->alternate_lba),
- &agpt, &aptes);
- if (!good_agpt && force_gpt)
- good_agpt = is_gpt_valid(state, lastlba, &agpt, &aptes);
+ le64_to_cpu(pgpt->alternate_lba),
+ &agpt, &aptes);
+
+ if (!good_agpt && force_gpt)
+ good_agpt = is_gpt_valid(state, lastlba, &agpt, &aptes);
if (!good_agpt && force_gpt && fops->alternative_gpt_sector) {
sector_t agpt_sector;
@@ -631,39 +639,38 @@ static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt,
&agpt, &aptes);
}
- /* The obviously unsuccessful case */
- if (!good_pgpt && !good_agpt)
- goto fail;
+ /* The obviously unsuccessful case */
+ if (!good_pgpt && !good_agpt)
+ goto fail;
- compare_gpts(pgpt, agpt, lastlba);
+ compare_gpts(pgpt, agpt, lastlba);
- /* The good cases */
- if (good_pgpt) {
- *gpt = pgpt;
- *ptes = pptes;
- kfree(agpt);
- kfree(aptes);
+ /* The good cases */
+ if (good_pgpt) {
+ *gpt = pgpt;
+ *ptes = pptes;
+ kfree(agpt);
+ kfree(aptes);
if (!good_agpt)
- pr_warn("Alternate GPT is invalid, using primary GPT.\n");
- return 1;
- }
- else if (good_agpt) {
- *gpt = agpt;
- *ptes = aptes;
- kfree(pgpt);
- kfree(pptes);
+ pr_warn("Alternate GPT is invalid, using primary GPT.\n");
+ return 1;
+ } else if (good_agpt) {
+ *gpt = agpt;
+ *ptes = aptes;
+ kfree(pgpt);
+ kfree(pptes);
pr_warn("Primary GPT is invalid, using alternate GPT.\n");
- return 1;
- }
+ return 1;
+ }
fail:
- kfree(pgpt);
- kfree(agpt);
- kfree(pptes);
- kfree(aptes);
- *gpt = NULL;
- *ptes = NULL;
- return 0;
+ kfree(pgpt);
+ kfree(agpt);
+ kfree(pptes);
+ kfree(aptes);
+ *gpt = NULL;
+ *ptes = NULL;
+ return 0;
}
/**
@@ -715,7 +722,7 @@ int efi_partition(struct parsed_partitions *state)
gpt_header *gpt = NULL;
gpt_entry *ptes = NULL;
u32 i;
- unsigned ssz = queue_logical_block_size(state->disk->queue) / 512;
+ unsigned int ssz = queue_logical_block_size(state->disk->queue) / 512;
if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
kfree(gpt);
@@ -727,7 +734,7 @@ int efi_partition(struct parsed_partitions *state)
for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
struct partition_meta_info *info;
- unsigned label_max;
+ unsigned int label_max;
u64 start = le64_to_cpu(ptes[i].starting_lba);
u64 size = le64_to_cpu(ptes[i].ending_lba) -
le64_to_cpu(ptes[i].starting_lba) + 1ULL;
--
2.25.1
