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path: root/drivers/mtd/mtdpart.c
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Diffstat (limited to 'drivers/mtd/mtdpart.c')
-rw-r--r--drivers/mtd/mtdpart.c39
1 files changed, 36 insertions, 3 deletions
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index f22aeccf01e7..77a7123a5c56 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -51,12 +51,21 @@ static int part_read (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
struct mtd_part *part = PART(mtd);
+ int res;
+
if (from >= mtd->size)
len = 0;
else if (from + len > mtd->size)
len = mtd->size - from;
- return part->master->read (part->master, from + part->offset,
+ res = part->master->read (part->master, from + part->offset,
len, retlen, buf);
+ if (unlikely(res)) {
+ if (res == -EUCLEAN)
+ mtd->ecc_stats.corrected++;
+ if (res == -EBADMSG)
+ mtd->ecc_stats.failed++;
+ }
+ return res;
}
static int part_point (struct mtd_info *mtd, loff_t from, size_t len,
@@ -82,12 +91,21 @@ static int part_read_oob(struct mtd_info *mtd, loff_t from,
struct mtd_oob_ops *ops)
{
struct mtd_part *part = PART(mtd);
+ int res;
if (from >= mtd->size)
return -EINVAL;
if (from + ops->len > mtd->size)
return -EINVAL;
- return part->master->read_oob(part->master, from + part->offset, ops);
+ res = part->master->read_oob(part->master, from + part->offset, ops);
+
+ if (unlikely(res)) {
+ if (res == -EUCLEAN)
+ mtd->ecc_stats.corrected++;
+ if (res == -EBADMSG)
+ mtd->ecc_stats.failed++;
+ }
+ return res;
}
static int part_read_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len,
@@ -246,12 +264,17 @@ static int part_block_isbad (struct mtd_info *mtd, loff_t ofs)
static int part_block_markbad (struct mtd_info *mtd, loff_t ofs)
{
struct mtd_part *part = PART(mtd);
+ int res;
+
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
if (ofs >= mtd->size)
return -EINVAL;
ofs += part->offset;
- return part->master->block_markbad(part->master, ofs);
+ res = part->master->block_markbad(part->master, ofs);
+ if (!res)
+ mtd->ecc_stats.badblocks++;
+ return res;
}
/*
@@ -436,6 +459,16 @@ int add_mtd_partitions(struct mtd_info *master,
}
slave->mtd.ecclayout = master->ecclayout;
+ if (master->block_isbad) {
+ uint32_t offs = 0;
+
+ while(offs < slave->mtd.size) {
+ if (master->block_isbad(master,
+ offs + slave->offset))
+ slave->mtd.ecc_stats.badblocks++;
+ offs += slave->mtd.erasesize;
+ }
+ }
if(parts[i].mtdp)
{ /* store the object pointer (caller may or may not register it */