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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2009-07-19 15:09:46 +0400
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2009-08-14 21:01:36 +0400
commit5b289b562f6d236108569a880cb38cc03d17a50d (patch)
tree74b3bcc3e1aa4632c5ea51e45769c11b9a0e7c1f /drivers/mtd/ubi
parent29a88c99d29834fb3314e0144900b187ede83106 (diff)
downloadlinux-5b289b562f6d236108569a880cb38cc03d17a50d.tar.xz
UBI: amend NOR flash pre-erase quirk
In case of NOR flash, UBI zeroes EC and VID headers' magic, in order to detect interrupted erasures. It first zeroes out the EC magic, then VID magic. However, if a power cut happens in between, we'll end up with a corrupted EC header and a valid VID header, in which case UBI accepts the PEB, but prints a warning. This patch makes sure we first zero out the VID magic, then the EC magic, not vice versa. This is just a small amendment to prevent warning messages. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'drivers/mtd/ubi')
-rw-r--r--drivers/mtd/ubi/io.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index 4cb69925d8d9..4e7bcb215075 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -480,20 +480,20 @@ static int nor_erase_prepare(struct ubi_device *ubi, int pnum)
loff_t addr;
uint32_t data = 0;
- addr = (loff_t)pnum * ubi->peb_size;
+ addr = (loff_t)pnum * ubi->peb_size + ubi->vid_hdr_aloffset;
err = ubi->mtd->write(ubi->mtd, addr, 4, &written, (void *)&data);
if (err) {
ubi_err("error %d while writing 4 bytes to PEB %d:%d, written "
- "%zd bytes", err, pnum, 0, written);
+ "%zd bytes", err, pnum, ubi->vid_hdr_aloffset, written);
ubi_dbg_dump_stack();
return err;
}
- addr += ubi->vid_hdr_aloffset;
+ addr -= ubi->vid_hdr_aloffset;
err = ubi->mtd->write(ubi->mtd, addr, 4, &written, (void *)&data);
if (err) {
ubi_err("error %d while writing 4 bytes to PEB %d:%d, written "
- "%zd bytes", err, pnum, ubi->vid_hdr_aloffset, written);
+ "%zd bytes", err, pnum, 0, written);
ubi_dbg_dump_stack();
return err;
}