genesi/linux-legacy
1
0
Fork 0
mirror of https://github.com/genesi/linux-legacy.git synced 2026-02-03 23:54:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

ENGR00068619 JFFS2 community fix with not use OOB

Browse Source 
JFFS2 community fix with not use OOB at MLC NAND, this patch
is coming from the MTD community

Signed-off-by: Jason Liu <r64343@freescale.com>
This commit is contained in:
Jason Liu
2008-03-14 21:53:04 -05:00
committed by Matt Sealey
parent a389e98d2c
commit c53a5e9698
3 changed files with 7 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
fs/jffs2/fs.c
View File

@@ -668,7 +668,9 @@ void jffs2_gc_release_page(struct jffs2_sb_info *c,
static int jffs2_flash_setup(struct jffs2_sb_info *c) {
int ret = 0;
if (jffs2_cleanmarker_oob(c)) {
if (c->mtd->type == MTD_NANDFLASH) {
if (!(c->mtd->flags & MTD_OOB_WRITEABLE))
printk(KERN_INFO "JFFS2 doesn't use OOB.\n");
/* NAND flash... do setup accordingly */
ret = jffs2_nand_flash_setup(c);
if (ret)
@@ -701,7 +703,7 @@ static int jffs2_flash_setup(struct jffs2_sb_info *c) {
void jffs2_flash_cleanup(struct jffs2_sb_info *c) {
if (jffs2_cleanmarker_oob(c)) {
if (c->mtd->type == MTD_NANDFLASH) {
jffs2_nand_flash_cleanup(c);
}

2
fs/jffs2/os-linux.h
View File

@@ -106,7 +106,7 @@ static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
#define jffs2_can_mark_obsolete(c) (c->mtd->flags & (MTD_BIT_WRITEABLE))
#endif
#define jffs2_cleanmarker_oob(c) (c->mtd->type == MTD_NANDFLASH)
#define jffs2_cleanmarker_oob(c) (c->mtd->type == MTD_NANDFLASH && (c->mtd->flags & MTD_OOB_WRITEABLE))
#define jffs2_flash_write_oob(c, ofs, len, retlen, buf) ((c)->mtd->write_oob((c)->mtd, ofs, len, retlen, buf))
#define jffs2_flash_read_oob(c, ofs, len, retlen, buf) ((c)->mtd->read_oob((c)->mtd, ofs, len, retlen, buf))

3
include/mtd/mtd-abi.h
View File

@@ -42,12 +42,13 @@ struct mtd_oob_buf64 {
#define MTD_BIT_WRITEABLE 0x800 /* Single bits can be flipped */
#define MTD_NO_ERASE 0x1000 /* No erase necessary */
#define MTD_POWERUP_LOCK 0x2000 /* Always locked after reset */
#define MTD_OOB_WRITEABLE 0x4000 /* Use Out-Of-Band area */
// Some common devices / combinations of capabilities
#define MTD_CAP_ROM 0
#define MTD_CAP_RAM (MTD_WRITEABLE | MTD_BIT_WRITEABLE | MTD_NO_ERASE)
#define MTD_CAP_NORFLASH (MTD_WRITEABLE | MTD_BIT_WRITEABLE)
#define MTD_CAP_NANDFLASH (MTD_WRITEABLE)
#define MTD_CAP_NANDFLASH (MTD_WRITEABLE | MTD_OOB_WRITEABLE)
/* ECC byte placement */
#define MTD_NANDECC_OFF 0 // Switch off ECC (Not recommended)