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Merge tag 'for-linus-3.5-20120601' of git://git.infradead.org/linux-mtd

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Pull mtd update from David Woodhouse:
 - More robust parsing especially of xattr data in JFFS2
 - Updates to mxc_nand and gpmi drivers to support new boards and device tree
 - Improve consistency of information about ECC strength in NAND devices
 - Clean up partition handling of plat_nand
 - Support NAND drivers without dedicated access to OOB area
 - BCH hardware ECC support for OMAP
 - Other fixes and cleanups, and a few new device IDs

Fixed trivial conflict in drivers/mtd/nand/gpmi-nand/gpmi-nand.c due to
added include files next to each other.

* tag 'for-linus-3.5-20120601' of git://git.infradead.org/linux-mtd: (75 commits)
  mtd: mxc_nand: move ecc strengh setup before nand_scan_tail
  mtd: block2mtd: fix recursive call of mtd_writev
  mtd: gpmi-nand: define ecc.strength
  mtd: of_parts: fix breakage in Kconfig
  mtd: nand: fix scan_read_raw_oob
  mtd: docg3 fix in-middle of blocks reads
  mtd: cfi_cmdset_0002: Slight cleanup of fixup messages
  mtd: add fixup for S29NS512P NOR flash.
  jffs2: allow to complete xattr integrity check on first GC scan
  jffs2: allow to discriminate between recoverable and non-recoverable errors
  mtd: nand: omap: add support for hardware BCH ecc
  ARM: OMAP3: gpmc: add BCH ecc api and modes
  mtd: nand: check the return code of 'read_oob/read_oob_raw'
  mtd: nand: remove 'sndcmd' parameter of 'read_oob/read_oob_raw'
  mtd: m25p80: Add support for Winbond W25Q80BW
  jffs2: get rid of jffs2_sync_super
  jffs2: remove unnecessary GC pass on sync
  jffs2: remove unnecessary GC pass on umount
  jffs2: remove lock_super
  mtd: gpmi: add gpmi support for mx6q
  ...
This commit is contained in:
Linus Torvalds
2012-06-01 16:55:42 -07:00
parent 48445159e9 4a43faf54e
commit f5e7e844a5
86 changed files with 1778 additions and 795 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
drivers/mtd/devices/docg3.c
View File

@@ -227,7 +227,7 @@ static void doc_read_data_area(struct docg3 *docg3, void *buf, int len,
u8 data8, *dst8;
doc_dbg("doc_read_data_area(buf=%p, len=%d)\n", buf, len);
cdr = len & 0x3;
cdr = len & 0x1;
len4 = len - cdr;
if (first)
@@ -732,12 +732,24 @@ err:
* @len: the number of bytes to be read (must be a multiple of 4)
* @buf: the buffer to be filled in (or NULL is forget bytes)
* @first: 1 if first time read, DOC_READADDRESS should be set
* @last_odd: 1 if last read ended up on an odd byte
*
* Reads bytes from a prepared page. There is a trickery here : if the last read
* ended up on an odd offset in the 1024 bytes double page, ie. between the 2
* planes, the first byte must be read apart. If a word (16bit) read was used,
* the read would return the byte of plane 2 as low *and* high endian, which
* will mess the read.
*
*/
static int doc_read_page_getbytes(struct docg3 *docg3, int len, u_char *buf,
int first)
int first, int last_odd)
{
doc_read_data_area(docg3, buf, len, first);
if (last_odd && len > 0) {
doc_read_data_area(docg3, buf, 1, first);
doc_read_data_area(docg3, buf ? buf + 1 : buf, len - 1, 0);
} else {
doc_read_data_area(docg3, buf, len, first);
}
doc_delay(docg3, 2);
return len;
}
@@ -850,6 +862,7 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t from,
u8 *buf = ops->datbuf;
size_t len, ooblen, nbdata, nboob;
u8 hwecc[DOC_ECC_BCH_SIZE], eccconf1;
int max_bitflips = 0;
if (buf)
len = ops->len;
@@ -876,7 +889,7 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t from,
ret = 0;
skip = from % DOC_LAYOUT_PAGE_SIZE;
mutex_lock(&docg3->cascade->lock);
while (!ret && (len > 0 || ooblen > 0)) {
while (ret >= 0 && (len > 0 || ooblen > 0)) {
calc_block_sector(from - skip, &block0, &block1, &page, &ofs,
docg3->reliable);
nbdata = min_t(size_t, len, DOC_LAYOUT_PAGE_SIZE - skip);
@@ -887,20 +900,20 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t from,
ret = doc_read_page_ecc_init(docg3, DOC_ECC_BCH_TOTAL_BYTES);
if (ret < 0)
goto err_in_read;
ret = doc_read_page_getbytes(docg3, skip, NULL, 1);
ret = doc_read_page_getbytes(docg3, skip, NULL, 1, 0);
if (ret < skip)
goto err_in_read;
ret = doc_read_page_getbytes(docg3, nbdata, buf, 0);
ret = doc_read_page_getbytes(docg3, nbdata, buf, 0, skip % 2);
if (ret < nbdata)
goto err_in_read;
doc_read_page_getbytes(docg3,
DOC_LAYOUT_PAGE_SIZE - nbdata - skip,
NULL, 0);
ret = doc_read_page_getbytes(docg3, nboob, oobbuf, 0);
NULL, 0, (skip + nbdata) % 2);
ret = doc_read_page_getbytes(docg3, nboob, oobbuf, 0, 0);
if (ret < nboob)
goto err_in_read;
doc_read_page_getbytes(docg3, DOC_LAYOUT_OOB_SIZE - nboob,
NULL, 0);
NULL, 0, nboob % 2);
doc_get_bch_hw_ecc(docg3, hwecc);
eccconf1 = doc_register_readb(docg3, DOC_ECCCONF1);
@@ -936,7 +949,8 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t from,
}
if (ret > 0) {
mtd->ecc_stats.corrected += ret;
ret = -EUCLEAN;
max_bitflips = max(max_bitflips, ret);
ret = max_bitflips;
}
}
@@ -1004,7 +1018,7 @@ static int doc_reload_bbt(struct docg3 *docg3)
DOC_LAYOUT_PAGE_SIZE);
if (!ret)
doc_read_page_getbytes(docg3, DOC_LAYOUT_PAGE_SIZE,
buf, 1);
buf, 1, 0);
buf += DOC_LAYOUT_PAGE_SIZE;
}
doc_read_page_finish(docg3);
@@ -1064,10 +1078,10 @@ static int doc_get_erase_count(struct docg3 *docg3, loff_t from)
ret = doc_reset_seq(docg3);
if (!ret)
ret = doc_read_page_prepare(docg3, block0, block1, page,
ofs + DOC_LAYOUT_WEAR_OFFSET);
ofs + DOC_LAYOUT_WEAR_OFFSET, 0);
if (!ret)
ret = doc_read_page_getbytes(docg3, DOC_LAYOUT_WEAR_SIZE,
buf, 1);
buf, 1, 0);
doc_read_page_finish(docg3);
if (ret || (buf[0] != DOC_ERASE_MARK) || (buf[2] != DOC_ERASE_MARK))