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mtd: introduce mtd_read interface 

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Artem Bityutskiy 2011-12-23 17:30:16 +02:00 committed by David Woodhouse
parent 04c601bfa4
commit 329ad399a9
35 changed files with 152 additions and 135 deletions
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2
arch/arm/mach-davinci/board-da850-evm.c
View File

@ -127,7 +127,7 @@ static void da850_evm_m25p80_notify_add(struct mtd_info *mtd)
size_t retlen;
if (!strcmp(mtd->name, "MAC-Address")) {
mtd->read(mtd, 0, ETH_ALEN, &retlen, mac_addr);
mtd_read(mtd, 0, ETH_ALEN, &retlen, mac_addr);
if (retlen == ETH_ALEN)
pr_info("Read MAC addr from SPI Flash: %pM\n",
mac_addr);

4
arch/cris/arch-v32/drivers/axisflashmap.c
View File

@ -413,8 +413,8 @@ static int __init init_axis_flash(void)
} while (blockstat && ptable_sector);
#endif
if (ptable_sector) {
main_mtd->read(main_mtd, ptable_sector, PAGESIZE,
&len, page);
mtd_read(main_mtd, ptable_sector, PAGESIZE, &len,
page);
ptable_head = &((struct partitiontable *) page)->head;
}

4
drivers/mtd/afs.c
View File

@ -75,7 +75,7 @@ afs_read_footer(struct mtd_info *mtd, u_int *img_start, u_int *iis_start,
size_t sz;
int ret;
ret = mtd->read(mtd, ptr, sizeof(fs), &sz, (u_char *) &fs);
ret = mtd_read(mtd, ptr, sizeof(fs), &sz, (u_char *)&fs);
if (ret >= 0 && sz != sizeof(fs))
ret = -EINVAL;
@ -132,7 +132,7 @@ afs_read_iis(struct mtd_info *mtd, struct image_info_struct *iis, u_int ptr)
int ret, i;
memset(iis, 0, sizeof(*iis));
ret = mtd->read(mtd, ptr, sizeof(*iis), &sz, (u_char *) iis);
ret = mtd_read(mtd, ptr, sizeof(*iis), &sz, (u_char *)iis);
if (ret < 0)
goto failed;

15
drivers/mtd/ar7part.c
View File

@ -73,8 +73,8 @@ static int create_mtd_partitions(struct mtd_info *master,
do { /* Try 10 blocks starting from master->erasesize */
offset = pre_size;
master->read(master, offset,
sizeof(header), &len, (uint8_t *)&header);
mtd_read(master, offset, sizeof(header), &len,
(uint8_t *)&header);
if (!strncmp((char *)&header, "TIENV0.8", 8))
ar7_parts[1].offset = pre_size;
if (header.checksum == LOADER_MAGIC1)
@ -95,16 +95,16 @@ static int create_mtd_partitions(struct mtd_info *master,
case LOADER_MAGIC1:
while (header.length) {
offset += sizeof(header) + header.length;
master->read(master, offset, sizeof(header),
&len, (uint8_t *)&header);
mtd_read(master, offset, sizeof(header), &len,
(uint8_t *)&header);
}
root_offset = offset + sizeof(header) + 4;
break;
case LOADER_MAGIC2:
while (header.length) {
offset += sizeof(header) + header.length;
master->read(master, offset, sizeof(header),
&len, (uint8_t *)&header);
mtd_read(master, offset, sizeof(header), &len,
(uint8_t *)&header);
}
root_offset = offset + sizeof(header) + 4 + 0xff;
root_offset &= ~(uint32_t)0xff;
@ -114,8 +114,7 @@ static int create_mtd_partitions(struct mtd_info *master,
break;
}
master->read(master, root_offset,
sizeof(header), &len, (u8 *)&header);
mtd_read(master, root_offset, sizeof(header), &len, (u8 *)&header);
if (header.checksum != SQUASHFS_MAGIC) {
root_offset += master->erasesize - 1;
root_offset &= ~(master->erasesize - 1);

12
drivers/mtd/bcm63xxpart.c
View File

@ -48,8 +48,8 @@ static int bcm63xx_detect_cfe(struct mtd_info *master)
int ret;
size_t retlen;
ret = master->read(master, BCM963XX_CFE_VERSION_OFFSET, 5, &retlen,
(void *)buf);
ret = mtd_read(master, BCM963XX_CFE_VERSION_OFFSET, 5, &retlen,
(void *)buf);
buf[retlen] = 0;
if (ret)
@ -59,8 +59,8 @@ static int bcm63xx_detect_cfe(struct mtd_info *master)
return 0;
/* very old CFE's do not have the cfe-v string, so check for magic */
ret = master->read(master, BCM63XX_CFE_MAGIC_OFFSET, 8, &retlen,
(void *)buf);
ret = mtd_read(master, BCM63XX_CFE_MAGIC_OFFSET, 8, &retlen,
(void *)buf);
buf[retlen] = 0;
return strncmp("CFE1CFE1", buf, 8);
@ -95,8 +95,8 @@ static int bcm63xx_parse_cfe_partitions(struct mtd_info *master,
return -ENOMEM;
/* Get the tag */
ret = master->read(master, cfelen, sizeof(struct bcm_tag), &retlen,
(void *)buf);
ret = mtd_read(master, cfelen, sizeof(struct bcm_tag), &retlen,
(void *)buf);
if (retlen != sizeof(struct bcm_tag)) {
vfree(buf);

41
drivers/mtd/ftl.c
View File

@ -168,8 +168,8 @@ static int scan_header(partition_t *part)
(offset + sizeof(header)) < max_offset;
offset += part->mbd.mtd->erasesize ? : 0x2000) {
err = part->mbd.mtd->read(part->mbd.mtd, offset, sizeof(header), &ret,
(unsigned char *)&header);
err = mtd_read(part->mbd.mtd, offset, sizeof(header), &ret,
(unsigned char *)&header);
if (err)
return err;
@ -224,8 +224,8 @@ static int build_maps(partition_t *part)
for (i = 0; i < le16_to_cpu(part->header.NumEraseUnits); i++) {
offset = ((i + le16_to_cpu(part->header.FirstPhysicalEUN))
<< part->header.EraseUnitSize);
ret = part->mbd.mtd->read(part->mbd.mtd, offset, sizeof(header), &retval,
(unsigned char *)&header);
ret = mtd_read(part->mbd.mtd, offset, sizeof(header), &retval,
(unsigned char *)&header);
if (ret)
goto out_XferInfo;
@ -289,9 +289,9 @@ static int build_maps(partition_t *part)
part->EUNInfo[i].Deleted = 0;
offset = part->EUNInfo[i].Offset + le32_to_cpu(header.BAMOffset);
ret = part->mbd.mtd->read(part->mbd.mtd, offset,
part->BlocksPerUnit * sizeof(uint32_t), &retval,
(unsigned char *)part->bam_cache);
ret = mtd_read(part->mbd.mtd, offset,
part->BlocksPerUnit * sizeof(uint32_t), &retval,
(unsigned char *)part->bam_cache);
if (ret)
goto out_bam_cache;
@ -485,9 +485,9 @@ static int copy_erase_unit(partition_t *part, uint16_t srcunit,
offset = eun->Offset + le32_to_cpu(part->header.BAMOffset);
ret = part->mbd.mtd->read(part->mbd.mtd, offset,
part->BlocksPerUnit * sizeof(uint32_t),
&retlen, (u_char *) (part->bam_cache));
ret = mtd_read(part->mbd.mtd, offset,
part->BlocksPerUnit * sizeof(uint32_t), &retlen,
(u_char *)(part->bam_cache));
/* mark the cache bad, in case we get an error later */
part->bam_index = 0xffff;
@ -523,8 +523,8 @@ static int copy_erase_unit(partition_t *part, uint16_t srcunit,
break;
case BLOCK_DATA:
case BLOCK_REPLACEMENT:
ret = part->mbd.mtd->read(part->mbd.mtd, src, SECTOR_SIZE,
&retlen, (u_char *) buf);
ret = mtd_read(part->mbd.mtd, src, SECTOR_SIZE, &retlen,
(u_char *)buf);
if (ret) {
printk(KERN_WARNING "ftl: Error reading old xfer unit in copy_erase_unit\n");
return ret;
@ -747,10 +747,11 @@ static uint32_t find_free(partition_t *part)
/* Invalidate cache */
part->bam_index = 0xffff;
ret = part->mbd.mtd->read(part->mbd.mtd,
part->EUNInfo[eun].Offset + le32_to_cpu(part->header.BAMOffset),
part->BlocksPerUnit * sizeof(uint32_t),
&retlen, (u_char *) (part->bam_cache));
ret = mtd_read(part->mbd.mtd,
part->EUNInfo[eun].Offset + le32_to_cpu(part->header.BAMOffset),
part->BlocksPerUnit * sizeof(uint32_t),
&retlen,
(u_char *)(part->bam_cache));
if (ret) {
printk(KERN_WARNING"ftl: Error reading BAM in find_free\n");
@ -810,8 +811,8 @@ static int ftl_read(partition_t *part, caddr_t buffer,
else {
offset = (part->EUNInfo[log_addr / bsize].Offset
+ (log_addr % bsize));
ret = part->mbd.mtd->read(part->mbd.mtd, offset, SECTOR_SIZE,
&retlen, (u_char *) buffer);
ret = mtd_read(part->mbd.mtd, offset, SECTOR_SIZE, &retlen,
(u_char *)buffer);
if (ret) {
printk(KERN_WARNING "Error reading MTD device in ftl_read()\n");
@ -849,8 +850,8 @@ static int set_bam_entry(partition_t *part, uint32_t log_addr,
le32_to_cpu(part->header.BAMOffset));
#ifdef PSYCHO_DEBUG
ret = part->mbd.mtd->read(part->mbd.mtd, offset, sizeof(uint32_t),
&retlen, (u_char *)&old_addr);
ret = mtd_read(part->mbd.mtd, offset, sizeof(uint32_t), &retlen,
(u_char *)&old_addr);
if (ret) {
printk(KERN_WARNING"ftl: Error reading old_addr in set_bam_entry: %d\n",ret);
return ret;

19
drivers/mtd/inftlcore.c
View File

@ -343,14 +343,17 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned
if (BlockMap[block] == BLOCK_NIL)
continue;
ret = mtd->read(mtd, (inftl->EraseSize * BlockMap[block]) +
(block * SECTORSIZE), SECTORSIZE, &retlen,
movebuf);
ret = mtd_read(mtd,
(inftl->EraseSize * BlockMap[block]) + (block * SECTORSIZE),
SECTORSIZE,
&retlen,
movebuf);
if (ret < 0 && !mtd_is_bitflip(ret)) {
ret = mtd->read(mtd,
(inftl->EraseSize * BlockMap[block]) +
(block * SECTORSIZE), SECTORSIZE,
&retlen, movebuf);
ret = mtd_read(mtd,
(inftl->EraseSize * BlockMap[block]) + (block * SECTORSIZE),
SECTORSIZE,
&retlen,
movebuf);
if (ret != -EIO)
pr_debug("INFTL: error went away on retry?\n");
}
@ -914,7 +917,7 @@ foundit:
} else {
size_t retlen;
loff_t ptr = (thisEUN * inftl->EraseSize) + blockofs;
int ret = mtd->read(mtd, ptr, SECTORSIZE, &retlen, buffer);
int ret = mtd_read(mtd, ptr, SECTORSIZE, &retlen, buffer);
/* Handle corrected bit flips gracefully */
if (ret < 0 && !mtd_is_bitflip(ret))

10
drivers/mtd/inftlmount.c
View File

@ -73,8 +73,8 @@ static int find_boot_record(struct INFTLrecord *inftl)
* Check for BNAND header first. Then whinge if it's found
* but later checks fail.
*/
ret = mtd->read(mtd, block * inftl->EraseSize,
SECTORSIZE, &retlen, buf);
ret = mtd_read(mtd, block * inftl->EraseSize, SECTORSIZE,
&retlen, buf);
/* We ignore ret in case the ECC of the MediaHeader is invalid
(which is apparently acceptable) */
if (retlen != SECTORSIZE) {
@ -118,8 +118,8 @@ static int find_boot_record(struct INFTLrecord *inftl)
memcpy(mh, buf, sizeof(struct INFTLMediaHeader));
/* Read the spare media header at offset 4096 */
mtd->read(mtd, block * inftl->EraseSize + 4096,
SECTORSIZE, &retlen, buf);
mtd_read(mtd, block * inftl->EraseSize + 4096, SECTORSIZE,
&retlen, buf);
if (retlen != SECTORSIZE) {
printk(KERN_WARNING "INFTL: Unable to read spare "
"Media Header\n");
@ -342,7 +342,7 @@ static int check_free_sectors(struct INFTLrecord *inftl, unsigned int address,
int i;
for (i = 0; i < len; i += SECTORSIZE) {
if (mtd->read(mtd, address, SECTORSIZE, &retlen, buf))
if (mtd_read(mtd, address, SECTORSIZE, &retlen, buf))
return -1;
if (memcmpb(buf, 0xff, SECTORSIZE) != 0)
return -1;

8
drivers/mtd/mtdblock.c
View File

@ -184,8 +184,8 @@ static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos,
mtdblk->cache_offset != sect_start) {
/* fill the cache with the current sector */
mtdblk->cache_state = STATE_EMPTY;
ret = mtd->read(mtd, sect_start, sect_size,
&retlen, mtdblk->cache_data);
ret = mtd_read(mtd, sect_start, sect_size,
&retlen, mtdblk->cache_data);
if (ret)
return ret;
if (retlen != sect_size)
@ -222,7 +222,7 @@ static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos,
mtd->name, pos, len);
if (!sect_size)
return mtd->read(mtd, pos, len, &retlen, buf);
return mtd_read(mtd, pos, len, &retlen, buf);
while (len > 0) {
unsigned long sect_start = (pos/sect_size)*sect_size;
@ -241,7 +241,7 @@ static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos,
mtdblk->cache_offset == sect_start) {
memcpy (buf, mtdblk->cache_data + offset, size);
} else {
ret = mtd->read(mtd, pos, size, &retlen, buf);
ret = mtd_read(mtd, pos, size, &retlen, buf);
if (ret)
return ret;
if (retlen != size)

2
drivers/mtd/mtdblock_ro.c
View File

@ -30,7 +30,7 @@ static int mtdblock_readsect(struct mtd_blktrans_dev *dev,
{
size_t retlen;
if (dev->mtd->read(dev->mtd, (block * 512), 512, &retlen, buf))
if (mtd_read(dev->mtd, (block * 512), 512, &retlen, buf))
return 1;
return 0;
}

2
drivers/mtd/mtdchar.c
View File

@ -232,7 +232,7 @@ static ssize_t mtdchar_read(struct file *file, char __user *buf, size_t count,
break;
}
default:
ret = mtd->read(mtd, *ppos, len, &retlen, kbuf);
ret = mtd_read(mtd, *ppos, len, &retlen, kbuf);
}
/* Nand returns -EBADMSG on ECC errors, but it returns
* the data. For our userspace tools it is important

2
drivers/mtd/mtdconcat.c
View File

@ -91,7 +91,7 @@ concat_read(struct mtd_info *mtd, loff_t from, size_t len,
/* Entire transaction goes into this subdev */
size = len;
err = subdev->read(subdev, from, size, &retsize, buf);
err = mtd_read(subdev, from, size, &retsize, buf);
/* Save information about bitflips! */
if (unlikely(err)) {

4
drivers/mtd/mtdoops.c
View File

@ -258,8 +258,8 @@ static void find_next_position(struct mtdoops_context *cxt)
continue;
/* Assume the page is used */
mark_page_used(cxt, page);
ret = mtd->read(mtd, page * record_size, MTDOOPS_HEADER_SIZE,
&retlen, (u_char *) &count[0]);
ret = mtd_read(mtd, page * record_size, MTDOOPS_HEADER_SIZE,
&retlen, (u_char *)&count[0]);
if (retlen != MTDOOPS_HEADER_SIZE ||
(ret < 0 && !mtd_is_bitflip(ret))) {
printk(KERN_ERR "mtdoops: read failure at %ld (%td of %d read), err %d\n",

3
drivers/mtd/mtdpart.c
View File

@ -70,8 +70,7 @@ static int part_read(struct mtd_info *mtd, loff_t from, size_t len,
len = 0;
else if (from + len > mtd->size)
len = mtd->size - from;
res = part->master->read(part->master, from + part->offset,
len, retlen, buf);
res = mtd_read(part->master, from + part->offset, len, retlen, buf);
if (unlikely(res)) {
if (mtd_is_bitflip(res))
mtd->ecc_stats.corrected += part->master->ecc_stats.corrected - stats.corrected;

4
drivers/mtd/mtdswap.c
View File

@ -736,7 +736,7 @@ static int mtdswap_move_block(struct mtdswap_dev *d, unsigned int oldblock,
retries = 0;
retry:
ret = mtd->read(mtd, readpos, PAGE_SIZE, &retlen, d->page_buf);
ret = mtd_read(mtd, readpos, PAGE_SIZE, &retlen, d->page_buf);
if (ret < 0 && !mtd_is_bitflip(ret)) {
oldeb = d->eb_data + oldblock / d->pages_per_eblk;
@ -1161,7 +1161,7 @@ static int mtdswap_readsect(struct mtd_blktrans_dev *dev,
retries = 0;
retry:
ret = mtd->read(mtd, readpos, PAGE_SIZE, &retlen, buf);
ret = mtd_read(mtd, readpos, PAGE_SIZE, &retlen, buf);
d->mtd_read_count++;
if (mtd_is_bitflip(ret)) {

4
drivers/mtd/nand/diskonchip.c
View File

@ -1072,7 +1072,7 @@ static int __init find_media_headers(struct mtd_info *mtd, u_char *buf, const ch
size_t retlen;
for (offs = 0; offs < mtd->size; offs += mtd->erasesize) {
ret = mtd->read(mtd, offs, mtd->writesize, &retlen, buf);
ret = mtd_read(mtd, offs, mtd->writesize, &retlen, buf);
if (retlen != mtd->writesize)
continue;
if (ret) {
@ -1097,7 +1097,7 @@ static int __init find_media_headers(struct mtd_info *mtd, u_char *buf, const ch
/* Only one mediaheader was found. We want buf to contain a
mediaheader on return, so we'll have to re-read the one we found. */
offs = doc->mh0_page << this->page_shift;
ret = mtd->read(mtd, offs, mtd->writesize, &retlen, buf);
ret = mtd_read(mtd, offs, mtd->writesize, &retlen, buf);
if (retlen != mtd->writesize) {
/* Insanity. Give up. */
printk(KERN_ERR "Read DiskOnChip Media Header once, but can't reread it???\n");

6
drivers/mtd/nand/nand_bbt.c
View File

@ -201,7 +201,7 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num,
from += marker_len;
marker_len = 0;
}
res = mtd->read(mtd, from, len, &retlen, buf);
res = mtd_read(mtd, from, len, &retlen, buf);
if (res < 0) {
if (mtd_is_eccerr(res)) {
pr_info("nand_bbt: ECC error in BBT at "
@ -298,7 +298,7 @@ static int scan_read_raw_data(struct mtd_info *mtd, uint8_t *buf, loff_t offs,
if (td->options & NAND_BBT_VERSION)
len++;
return mtd->read(mtd, offs, len, &retlen, buf);
return mtd_read(mtd, offs, len, &retlen, buf);
}
/* Scan read raw data from flash */
@ -756,7 +756,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf,
/* Make it block aligned */
to &= ~((loff_t)((1 << this->bbt_erase_shift) - 1));
len = 1 << this->bbt_erase_shift;
res = mtd->read(mtd, to, len, &retlen, buf);
res = mtd_read(mtd, to, len, &retlen, buf);
if (res < 0) {
if (retlen != len) {
pr_info("nand_bbt: error reading block "

17
drivers/mtd/nftlcore.c
View File

@ -423,12 +423,17 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p
if (BlockMap[block] == BLOCK_NIL)
continue;
ret = mtd->read(mtd, (nftl->EraseSize * BlockMap[block]) + (block * 512),
512, &retlen, movebuf);
ret = mtd_read(mtd,
(nftl->EraseSize * BlockMap[block]) + (block * 512),
512,
&retlen,
movebuf);
if (ret < 0 && !mtd_is_bitflip(ret)) {
ret = mtd->read(mtd, (nftl->EraseSize * BlockMap[block])
+ (block * 512), 512, &retlen,
movebuf);
ret = mtd_read(mtd,
(nftl->EraseSize * BlockMap[block]) + (block * 512),
512,
&retlen,
movebuf);
if (ret != -EIO)
printk("Error went away on retry.\n");
}
@ -771,7 +776,7 @@ static int nftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block,
} else {
loff_t ptr = (lastgoodEUN * nftl->EraseSize) + blockofs;
size_t retlen;
int res = mtd->read(mtd, ptr, 512, &retlen, buffer);
int res = mtd_read(mtd, ptr, 512, &retlen, buffer);
if (res < 0 && !mtd_is_bitflip(res))
return -EIO;

6
drivers/mtd/nftlmount.c
View File

@ -63,8 +63,8 @@ static int find_boot_record(struct NFTLrecord *nftl)
/* Check for ANAND header first. Then can whinge if it's found but later
checks fail */
ret = mtd->read(mtd, block * nftl->EraseSize, SECTORSIZE,
&retlen, buf);
ret = mtd_read(mtd, block * nftl->EraseSize, SECTORSIZE,
&retlen, buf);
/* We ignore ret in case the ECC of the MediaHeader is invalid
(which is apparently acceptable) */
if (retlen != SECTORSIZE) {
@ -274,7 +274,7 @@ static int check_free_sectors(struct NFTLrecord *nftl, unsigned int address, int
int i;
for (i = 0; i < len; i += SECTORSIZE) {
if (mtd->read(mtd, address, SECTORSIZE, &retlen, buf))
if (mtd_read(mtd, address, SECTORSIZE, &retlen, buf))
return -1;
if (memcmpb(buf, 0xff, SECTORSIZE) != 0)
return -1;

4
drivers/mtd/redboot.c
View File

@ -104,8 +104,8 @@ static int parse_redboot_partitions(struct mtd_info *master,
printk(KERN_NOTICE "Searching for RedBoot partition table in %s at offset 0x%lx\n",
master->name, offset);
ret = master->read(master, offset,
master->erasesize, &retlen, (void *)buf);
ret = mtd_read(master, offset, master->erasesize, &retlen,
(void *)buf);
if (ret)
goto out;

24
drivers/mtd/rfd_ftl.c
View File

@ -200,9 +200,9 @@ static int scan_header(struct partition *part)
part->sector_map[i] = -1;
for (i=0, blocks_found=0; i<part->total_blocks; i++) {
rc = part->mbd.mtd->read(part->mbd.mtd,
i * part->block_size, part->header_size,
&retlen, (u_char*)part->header_cache);
rc = mtd_read(part->mbd.mtd, i * part->block_size,
part->header_size, &retlen,
(u_char *)part->header_cache);
if (!rc && retlen != part->header_size)
rc = -EIO;
@ -250,8 +250,8 @@ static int rfd_ftl_readsect(struct mtd_blktrans_dev *dev, u_long sector, char *b
addr = part->sector_map[sector];
if (addr != -1) {
rc = part->mbd.mtd->read(part->mbd.mtd, addr, SECTOR_SIZE,
&retlen, (u_char*)buf);
rc = mtd_read(part->mbd.mtd, addr, SECTOR_SIZE, &retlen,
(u_char *)buf);
if (!rc && retlen != SECTOR_SIZE)
rc = -EIO;
@ -372,9 +372,8 @@ static int move_block_contents(struct partition *part, int block_no, u_long *old
if (!map)
goto err2;
rc = part->mbd.mtd->read(part->mbd.mtd,
part->blocks[block_no].offset, part->header_size,
&retlen, (u_char*)map);
rc = mtd_read(part->mbd.mtd, part->blocks[block_no].offset,
part->header_size, &retlen, (u_char *)map);
if (!rc && retlen != part->header_size)
rc = -EIO;
@ -413,8 +412,8 @@ static int move_block_contents(struct partition *part, int block_no, u_long *old
}
continue;
}
rc = part->mbd.mtd->read(part->mbd.mtd, addr,
SECTOR_SIZE, &retlen, sector_data);
rc = mtd_read(part->mbd.mtd, addr, SECTOR_SIZE, &retlen,
sector_data);
if (!rc && retlen != SECTOR_SIZE)
rc = -EIO;
@ -563,8 +562,9 @@ static int find_writable_block(struct partition *part, u_long *old_sector)
}
}
rc = part->mbd.mtd->read(part->mbd.mtd, part->blocks[block].offset,
part->header_size, &retlen, (u_char*)part->header_cache);
rc = mtd_read(part->mbd.mtd, part->blocks[block].offset,
part->header_size, &retlen,
(u_char *)part->header_cache);
if (!rc && retlen != part->header_size)
rc = -EIO;

6
drivers/mtd/ssfdc.c
View File

@ -123,8 +123,8 @@ static int get_valid_cis_sector(struct mtd_info *mtd)
*/
for (k = 0, offset = 0; k < 4; k++, offset += mtd->erasesize) {
if (!mtd->block_isbad(mtd, offset)) {
ret = mtd->read(mtd, offset, SECTOR_SIZE, &retlen,
sect_buf);
ret = mtd_read(mtd, offset, SECTOR_SIZE, &retlen,
sect_buf);
/* CIS pattern match on the sector buffer */
if (ret < 0 || retlen != SECTOR_SIZE) {
@ -156,7 +156,7 @@ static int read_physical_sector(struct mtd_info *mtd, uint8_t *sect_buf,
size_t retlen;
loff_t offset = (loff_t)sect_no << SECTOR_SHIFT;
ret = mtd->read(mtd, offset, SECTOR_SIZE, &retlen, sect_buf);
ret = mtd_read(mtd, offset, SECTOR_SIZE, &retlen, sect_buf);
if (ret < 0 || retlen != SECTOR_SIZE)
return -1;

28
drivers/mtd/tests/mtd_pagetest.c
View File

@ -127,7 +127,7 @@ static int verify_eraseblock(int ebnum)
set_random_data(writebuf, mtd->erasesize);
for (j = 0; j < pgcnt - 1; ++j, addr += pgsize) {
/* Do a read to set the internal dataRAMs to different data */
err = mtd->read(mtd, addr0, bufsize, &read, twopages);
err = mtd_read(mtd, addr0, bufsize, &read, twopages);
if (mtd_is_bitflip(err))
err = 0;
if (err || read != bufsize) {
@ -135,7 +135,7 @@ static int verify_eraseblock(int ebnum)
(long long)addr0);
return err;
}
err = mtd->read(mtd, addrn - bufsize, bufsize, &read, twopages);
err = mtd_read(mtd, addrn - bufsize, bufsize, &read, twopages);
if (mtd_is_bitflip(err))
err = 0;
if (err || read != bufsize) {
@ -145,7 +145,7 @@ static int verify_eraseblock(int ebnum)
}
memset(twopages, 0, bufsize);
read = 0;
err = mtd->read(mtd, addr, bufsize, &read, twopages);
err = mtd_read(mtd, addr, bufsize, &read, twopages);
if (mtd_is_bitflip(err))
err = 0;
if (err || read != bufsize) {
@ -163,7 +163,7 @@ static int verify_eraseblock(int ebnum)
if (addr <= addrn - pgsize - pgsize && !bbt[ebnum + 1]) {
unsigned long oldnext = next;
/* Do a read to set the internal dataRAMs to different data */
err = mtd->read(mtd, addr0, bufsize, &read, twopages);
err = mtd_read(mtd, addr0, bufsize, &read, twopages);
if (mtd_is_bitflip(err))
err = 0;
if (err || read != bufsize) {
@ -171,7 +171,7 @@ static int verify_eraseblock(int ebnum)
(long long)addr0);
return err;
}
err = mtd->read(mtd, addrn - bufsize, bufsize, &read, twopages);
err = mtd_read(mtd, addrn - bufsize, bufsize, &read, twopages);
if (mtd_is_bitflip(err))
err = 0;
if (err || read != bufsize) {
@ -181,7 +181,7 @@ static int verify_eraseblock(int ebnum)
}
memset(twopages, 0, bufsize);
read = 0;
err = mtd->read(mtd, addr, bufsize, &read, twopages);
err = mtd_read(mtd, addr, bufsize, &read, twopages);
if (mtd_is_bitflip(err))
err = 0;
if (err || read != bufsize) {
@ -230,7 +230,7 @@ static int crosstest(void)
/* Read 2nd-to-last page to pp1 */
read = 0;
addr = addrn - pgsize - pgsize;
err = mtd->read(mtd, addr, pgsize, &read, pp1);
err = mtd_read(mtd, addr, pgsize, &read, pp1);
if (mtd_is_bitflip(err))
err = 0;
if (err || read != pgsize) {
@ -243,7 +243,7 @@ static int crosstest(void)
/* Read 3rd-to-last page to pp1 */
read = 0;
addr = addrn - pgsize - pgsize - pgsize;
err = mtd->read(mtd, addr, pgsize, &read, pp1);
err = mtd_read(mtd, addr, pgsize, &read, pp1);
if (mtd_is_bitflip(err))
err = 0;
if (err || read != pgsize) {
@ -257,7 +257,7 @@ static int crosstest(void)
read = 0;
addr = addr0;
printk(PRINT_PREF "reading page at %#llx\n", (long long)addr);
err = mtd->read(mtd, addr, pgsize, &read, pp2);
err = mtd_read(mtd, addr, pgsize, &read, pp2);
if (mtd_is_bitflip(err))
err = 0;
if (err || read != pgsize) {
@ -271,7 +271,7 @@ static int crosstest(void)
read = 0;
addr = addrn - pgsize;
printk(PRINT_PREF "reading page at %#llx\n", (long long)addr);
err = mtd->read(mtd, addr, pgsize, &read, pp3);
err = mtd_read(mtd, addr, pgsize, &read, pp3);
if (mtd_is_bitflip(err))
err = 0;
if (err || read != pgsize) {
@ -285,7 +285,7 @@ static int crosstest(void)
read = 0;
addr = addr0;
printk(PRINT_PREF "reading page at %#llx\n", (long long)addr);
err = mtd->read(mtd, addr, pgsize, &read, pp4);
err = mtd_read(mtd, addr, pgsize, &read, pp4);
if (mtd_is_bitflip(err))
err = 0;
if (err || read != pgsize) {
@ -344,7 +344,7 @@ static int erasecrosstest(void)
printk(PRINT_PREF "reading 1st page of block %d\n", ebnum);
memset(readbuf, 0, pgsize);
err = mtd->read(mtd, addr0, pgsize, &read, readbuf);
err = mtd_read(mtd, addr0, pgsize, &read, readbuf);
if (mtd_is_bitflip(err))
err = 0;
if (err || read != pgsize) {
@ -382,7 +382,7 @@ static int erasecrosstest(void)
printk(PRINT_PREF "reading 1st page of block %d\n", ebnum);
memset(readbuf, 0, pgsize);
err = mtd->read(mtd, addr0, pgsize, &read, readbuf);
err = mtd_read(mtd, addr0, pgsize, &read, readbuf);
if (mtd_is_bitflip(err))
err = 0;
if (err || read != pgsize) {
@ -438,7 +438,7 @@ static int erasetest(void)
return err;
printk(PRINT_PREF "reading 1st page of block %d\n", ebnum);
err = mtd->read(mtd, addr0, pgsize, &read, twopages);
err = mtd_read(mtd, addr0, pgsize, &read, twopages);
if (mtd_is_bitflip(err))
err = 0;
if (err || read != pgsize) {

2
drivers/mtd/tests/mtd_readtest.c
View File

@ -52,7 +52,7 @@ static int read_eraseblock_by_page(int ebnum)
for (i = 0; i < pgcnt; i++) {
memset(buf, 0 , pgcnt);
ret = mtd->read(mtd, addr, pgsize, &read, buf);
ret = mtd_read(mtd, addr, pgsize, &read, buf);
if (ret == -EUCLEAN)
ret = 0;
if (ret || read != pgsize) {

8
drivers/mtd/tests/mtd_speedtest.c
View File

@ -214,7 +214,7 @@ static int read_eraseblock(int ebnum)
int err = 0;
loff_t addr = ebnum * mtd->erasesize;
err = mtd->read(mtd, addr, mtd->erasesize, &read, iobuf);
err = mtd_read(mtd, addr, mtd->erasesize, &read, iobuf);
/* Ignore corrected ECC errors */
if (mtd_is_bitflip(err))
err = 0;
@ -235,7 +235,7 @@ static int read_eraseblock_by_page(int ebnum)
void *buf = iobuf;
for (i = 0; i < pgcnt; i++) {
err = mtd->read(mtd, addr, pgsize, &read, buf);
err = mtd_read(mtd, addr, pgsize, &read, buf);
/* Ignore corrected ECC errors */
if (mtd_is_bitflip(err))
err = 0;
@ -261,7 +261,7 @@ static int read_eraseblock_by_2pages(int ebnum)
void *buf = iobuf;
for (i = 0; i < n; i++) {
err = mtd->read(mtd, addr, sz, &read, buf);
err = mtd_read(mtd, addr, sz, &read, buf);
/* Ignore corrected ECC errors */
if (mtd_is_bitflip(err))
err = 0;
@ -276,7 +276,7 @@ static int read_eraseblock_by_2pages(int ebnum)
buf += sz;
}
if (pgcnt % 2) {
err = mtd->read(mtd, addr, pgsize, &read, buf);
err = mtd_read(mtd, addr, pgsize, &read, buf);
/* Ignore corrected ECC errors */
if (mtd_is_bitflip(err))
err = 0;

2
drivers/mtd/tests/mtd_stresstest.c
View File

@ -153,7 +153,7 @@ static int do_read(void)
len = mtd->erasesize - offs;
}
addr = eb * mtd->erasesize + offs;
err = mtd->read(mtd, addr, len, &read, readbuf);
err = mtd_read(mtd, addr, len, &read, readbuf);
if (mtd_is_bitflip(err))
err = 0;
if (unlikely(err || read != len)) {

8
drivers/mtd/tests/mtd_subpagetest.c
View File

@ -196,7 +196,7 @@ static int verify_eraseblock(int ebnum)
set_random_data(writebuf, subpgsize);
clear_data(readbuf, subpgsize);
read = 0;
err = mtd->read(mtd, addr, subpgsize, &read, readbuf);
err = mtd_read(mtd, addr, subpgsize, &read, readbuf);
if (unlikely(err || read != subpgsize)) {
if (mtd_is_bitflip(err) && read == subpgsize) {
printk(PRINT_PREF "ECC correction at %#llx\n",
@ -224,7 +224,7 @@ static int verify_eraseblock(int ebnum)
set_random_data(writebuf, subpgsize);
clear_data(readbuf, subpgsize);
read = 0;
err = mtd->read(mtd, addr, subpgsize, &read, readbuf);
err = mtd_read(mtd, addr, subpgsize, &read, readbuf);
if (unlikely(err || read != subpgsize)) {
if (mtd_is_bitflip(err) && read == subpgsize) {
printk(PRINT_PREF "ECC correction at %#llx\n",
@ -262,7 +262,7 @@ static int verify_eraseblock2(int ebnum)
set_random_data(writebuf, subpgsize * k);
clear_data(readbuf, subpgsize * k);
read = 0;
err = mtd->read(mtd, addr, subpgsize * k, &read, readbuf);
err = mtd_read(mtd, addr, subpgsize * k, &read, readbuf);
if (unlikely(err || read != subpgsize * k)) {
if (mtd_is_bitflip(err) && read == subpgsize * k) {
printk(PRINT_PREF "ECC correction at %#llx\n",
@ -296,7 +296,7 @@ static int verify_eraseblock_ff(int ebnum)
for (j = 0; j < mtd->erasesize / subpgsize; ++j) {
clear_data(readbuf, subpgsize);
read = 0;
err = mtd->read(mtd, addr, subpgsize, &read, readbuf);
err = mtd_read(mtd, addr, subpgsize, &read, readbuf);
if (unlikely(err || read != subpgsize)) {
if (mtd_is_bitflip(err) && read == subpgsize) {
printk(PRINT_PREF "ECC correction at %#llx\n",

2
drivers/mtd/tests/mtd_torturetest.c
View File

@ -137,7 +137,7 @@ static inline int check_eraseblock(int ebnum, unsigned char *buf)
}
retry:
err = mtd->read(mtd, addr, len, &read, check_buf);
err = mtd_read(mtd, addr, len, &read, check_buf);
if (mtd_is_bitflip(err))
printk(PRINT_PREF "single bit flip occurred at EB %d "
"MTD reported that it was fixed.\n", ebnum);

2
drivers/mtd/ubi/debug.c
View File

@ -216,7 +216,7 @@ void ubi_dbg_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len)
buf = vmalloc(len);
if (!buf)
return;
err = ubi->mtd->read(ubi->mtd, addr, len, &read, buf);
err = mtd_read(ubi->mtd, addr, len, &read, buf);
if (err && err != -EUCLEAN) {
ubi_err("error %d while reading %d bytes from PEB %d:%d, "
"read %zd bytes", err, len, pnum, offset, read);

6
drivers/mtd/ubi/io.c
View File

@ -170,7 +170,7 @@ int ubi_io_read(const struct ubi_device *ubi, void *buf, int pnum, int offset,
addr = (loff_t)pnum * ubi->peb_size + offset;
retry:
err = ubi->mtd->read(ubi->mtd, addr, len, &read, buf);
err = mtd_read(ubi->mtd, addr, len, &read, buf);
if (err) {
const char *errstr = mtd_is_eccerr(err) ? " (ECC error)" : "";
@ -1357,7 +1357,7 @@ int ubi_dbg_check_write(struct ubi_device *ubi, const void *buf, int pnum,
return 0;
}
err = ubi->mtd->read(ubi->mtd, addr, len, &read, buf1);
err = mtd_read(ubi->mtd, addr, len, &read, buf1);
if (err && !mtd_is_bitflip(err))
goto out_free;
@ -1421,7 +1421,7 @@ int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len)
return 0;
}
err = ubi->mtd->read(ubi->mtd, addr, len, &read, buf);
err = mtd_read(ubi->mtd, addr, len, &read, buf);
if (err && !mtd_is_bitflip(err)) {
ubi_err("error %d while reading %d bytes from PEB %d:%d, "
"read %zd bytes", err, len, pnum, offset, read);

8
drivers/staging/spectra/lld_mtd.c
View File

@ -283,9 +283,11 @@ u16 mtd_Read_Page_Main(u8 *read_data, u32 Block,
while (PageCount) {
ret = spectra_mtd->read(spectra_mtd,
(Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize),
DeviceInfo.wPageDataSize, &retlen, read_data);
ret = mtd_read(spectra_mtd,
(Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize),
DeviceInfo.wPageDataSize,
&retlen,
read_data);
if (ret) {
printk(KERN_ERR "%s failed %d\n", __func__, ret);
return FAIL;

2
fs/jffs2/erase.c
View File

@ -381,7 +381,7 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl
*bad_offset = ofs;
ret = c->mtd->read(c->mtd, ofs, readlen, &retlen, ebuf);
ret = mtd_read(c->mtd, ofs, readlen, &retlen, ebuf);
if (ret) {
printk(KERN_WARNING "Read of newly-erased block at 0x%08x failed: %d. Putting on bad_list\n", ofs, ret);
ret = -EIO;

9
fs/jffs2/wbuf.c
View File

@ -228,7 +228,7 @@ static int jffs2_verify_write(struct jffs2_sb_info *c, unsigned char *buf,
size_t retlen;
char *eccstr;
ret = c->mtd->read(c->mtd, ofs, c->wbuf_pagesize, &retlen, c->wbuf_verify);
ret = mtd_read(c->mtd, ofs, c->wbuf_pagesize, &retlen, c->wbuf_verify);
if (ret && ret != -EUCLEAN && ret != -EBADMSG) {
printk(KERN_WARNING "jffs2_verify_write(): Read back of page at %08x failed: %d\n", c->wbuf_ofs, ret);
return ret;
@ -337,7 +337,8 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
}
/* Do the read... */
ret = c->mtd->read(c->mtd, start, c->wbuf_ofs - start, &retlen, buf);
ret = mtd_read(c->mtd, start, c->wbuf_ofs - start, &retlen,
buf);
/* ECC recovered ? */
if ((ret == -EUCLEAN || ret == -EBADMSG) &&
@ -948,11 +949,11 @@ int jffs2_flash_read(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *re
int ret;
if (!jffs2_is_writebuffered(c))
return c->mtd->read(c->mtd, ofs, len, retlen, buf);
return mtd_read(c->mtd, ofs, len, retlen, buf);
/* Read flash */
down_read(&c->wbuf_sem);
ret = c->mtd->read(c->mtd, ofs, len, retlen, buf);
ret = mtd_read(c->mtd, ofs, len, retlen, buf);
if ( (ret == -EBADMSG || ret == -EUCLEAN) && (*retlen == len) ) {
if (ret == -EBADMSG)

2
fs/logfs/dev_mtd.c
View File

@ -20,7 +20,7 @@ static int logfs_mtd_read(struct super_block *sb, loff_t ofs, size_t len,
size_t retlen;
int ret;
ret = mtd->read(mtd, ofs, len, &retlen, buf);
ret = mtd_read(mtd, ofs, len, &retlen, buf);
BUG_ON(ret == -EINVAL);
if (ret)
return ret;

9
include/linux/mtd/mtd.h
View File

@ -182,6 +182,8 @@ struct mtd_info {
unsigned long len,
unsigned long offset,
unsigned long flags);
int (*read) (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf);
/* Backing device capabilities for this device
* - provides mmap capabilities
@ -189,7 +191,6 @@ struct mtd_info {
struct backing_dev_info *backing_dev_info;
int (*read) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
int (*write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
/* In blackbox flight recorder like scenarios we want to make successful
@ -301,6 +302,12 @@ static inline unsigned long mtd_get_unmapped_area(struct mtd_info *mtd,
return mtd->get_unmapped_area(mtd, len, offset, flags);
}
static inline int mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
return mtd->read(mtd, from, len, retlen, buf);
}
static inline struct mtd_info *dev_to_mtd(struct device *dev)
{
return dev ? dev_get_drvdata(dev) : NULL;