diff options
| -rw-r--r-- | drivers/mtd/peb.c | 27 | ||||
| -rw-r--r-- | include/mtd/mtd-peb.h | 1 |
2 files changed, 28 insertions, 0 deletions
diff --git a/drivers/mtd/peb.c b/drivers/mtd/peb.c index c35b63f2fd..388db7f587 100644 --- a/drivers/mtd/peb.c +++ b/drivers/mtd/peb.c @@ -130,6 +130,33 @@ int mtd_num_pebs(struct mtd_info *mtd) } /** + * mtd_skip_bad - skip bad blocks + * @mtd: mtd device + * @pnum: The number of the block + * + * This function skips bad blocks beginning from @pnum. Returns 0 for success and + * a negative error code otherwise. on successful exit @pnum points to the next + * good block. + */ +int mtd_skip_bad(struct mtd_info *mtd, int *pnum) +{ + if (*pnum < 0) + return -EINVAL; + + while (1) { + loff_t offset = (uint64_t)mtd->erasesize * *pnum; + + if (offset >= mtd->size) + return -ENOSPC; + + if (!mtd_block_isbad(mtd, offset)) + return 0; + + *pnum = *pnum + 1; + } +} + +/** * mtd_peb_mark_bad - mark a physical eraseblock as bad * @mtd: mtd device * @pnum: The number of the block diff --git a/include/mtd/mtd-peb.h b/include/mtd/mtd-peb.h index e4fd01df90..23f89d89a8 100644 --- a/include/mtd/mtd-peb.h +++ b/include/mtd/mtd-peb.h @@ -12,6 +12,7 @@ int mtd_peb_torture(struct mtd_info *mtd, int pnum); int mtd_peb_erase(struct mtd_info *mtd, int pnum); int mtd_peb_mark_bad(struct mtd_info *mtd, int pnum); int mtd_peb_is_bad(struct mtd_info *mtd, int pnum); +int mtd_skip_bad(struct mtd_info *mtd, int *pnum); int mtd_peb_check_all_ff(struct mtd_info *mtd, int pnum, int offset, int len, int warn); int mtd_peb_verify(struct mtd_info *mtd, const void *buf, int pnum, |