diff options
| author | Chris Packham <chris.packham@alliedtelesis.co.nz> | 2020-11-27 13:07:08 +1300 |
|---|---|---|
| committer | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2020-11-29 23:39:41 +0100 |
| commit | 54d68799b73e755923def1306b4da607ad45bd60 (patch) | |
| tree | e5a96954da903dbc82b3be63b932b62015ad3f33 /lib/libmtd.c | |
| parent | 5a6e813a6ba48c81889208bdbeff92b13958dd2d (diff) | |
libmtd: avoid divide by zero
The concept of erase blocks doesn't apply to mtd-ram devices. Such
devices set MTD_NO_ERASE to indicate this and some report 0 for the
erase block size. Avoid a divide by zero when calculating the erase
block count for such devices.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: Richard Weinberger <richard@nod.at>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib/libmtd.c')
| -rw-r--r-- | lib/libmtd.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/libmtd.c b/lib/libmtd.c index 9d8d0e8..b581d80 100644 --- a/lib/libmtd.c +++ b/lib/libmtd.c @@ -791,7 +791,10 @@ int mtd_get_dev_info1(libmtd_t desc, int mtd_num, struct mtd_dev_info *mtd) return -1; mtd->writable = !!(ret & MTD_WRITEABLE); - mtd->eb_cnt = mtd->size / mtd->eb_size; + if (ret & MTD_NO_ERASE) + mtd->eb_cnt = 1; + else + mtd->eb_cnt = mtd->size / mtd->eb_size; mtd->type = type_str2int(mtd->type_str); mtd->bb_allowed = !!(mtd->type == MTD_NANDFLASH || mtd->type == MTD_MLCNANDFLASH); |