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[MTD] mtdpart: Make ecc_stats more realistic.

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In the existing implementation, ecc_stats fields are incremented only by
one, regardless of master mtd errors number. For example, if there are N
errors were corrected by ECC, partition ecc_stats.corrected will be
incremented by one.

This commit changes simple increment to sum of old value and parent mtd
error count.

Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Yauhen Kharuzhy
2009-03-27 00:41:09 +02:00
committed by David Woodhouse
parent 7995c7e94f
commit d8877f191e
1 changed files with 5 additions and 2 deletions
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7
drivers/mtd/mtdpart.c
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@@ -48,8 +48,11 @@ static int part_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf) size_t *retlen, u_char *buf)
{ {
struct mtd_part *part = PART(mtd); struct mtd_part *part = PART(mtd);
struct mtd_ecc_stats stats;
int res; int res;
stats = part->master->ecc_stats;
if (from >= mtd->size) if (from >= mtd->size)
len = 0; len = 0;
else if (from + len > mtd->size) else if (from + len > mtd->size)
@@ -58,9 +61,9 @@ static int part_read(struct mtd_info *mtd, loff_t from, size_t len,
len, retlen, buf); len, retlen, buf);
if (unlikely(res)) { if (unlikely(res)) {
if (res == -EUCLEAN) if (res == -EUCLEAN)
mtd->ecc_stats.corrected++; mtd->ecc_stats.corrected += part->master->ecc_stats.corrected - stats.corrected;
if (res == -EBADMSG) if (res == -EBADMSG)
mtd->ecc_stats.failed++; mtd->ecc_stats.failed += part->master->ecc_stats.failed - stats.failed;
} }
return res; return res;
} }