diff options
Diffstat (limited to 'drivers/mtd/ubi/debug.c')
| -rw-r--r-- | drivers/mtd/ubi/debug.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/debug.c b/drivers/mtd/ubi/debug.c index 54b0186915f..4876977e52c 100644 --- a/drivers/mtd/ubi/debug.c +++ b/drivers/mtd/ubi/debug.c @@ -196,4 +196,36 @@ void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req) printk(KERN_DEBUG "\t1st 16 characters of name: %s\n", nm); } +/** + * ubi_dbg_dump_flash - dump a region of flash. + * @ubi: UBI device description object + * @pnum: the physical eraseblock number to dump + * @offset: the starting offset within the physical eraseblock to dump + * @len: the length of the region to dump + */ +void ubi_dbg_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len) +{ + int err; + size_t read; + void *buf; + loff_t addr = (loff_t)pnum * ubi->peb_size + offset; + + buf = vmalloc(len); + if (!buf) + return; + err = ubi->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); + goto out; + } + + dbg_msg("dumping %d bytes of data from PEB %d, offset %d", + len, pnum, offset); + print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, buf, len, 1); +out: + vfree(buf); + return; +} + #endif /* CONFIG_MTD_UBI_DEBUG */ |