sysmo-bts
/
barebox
9
0
Fork 0
Code Releases Activity

drivers/mtd: fix mtdraw write support 

When unaligned writes are used, typically doing a cp file /dev/mtdraw0.foo,
the alignement correction code was incorrectly handling such cases, and
didn't return the expected number of written bytes.

This was tested on a 528 block size.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Robert Jarzmik 2012-01-26 20:55:24 +01:00 committed by Sascha Hauer
parent 8d6bfdaec7
commit 93125fda04
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/mtd/mtdraw.c
View File

@ -191,8 +191,9 @@ static ssize_t mtdraw_write(struct cdev *cdev, const void *buf, size_t count,
}
if (mtdraw->write_fill == bsz) {
ret = mtdraw_blkwrite(mtd, mtdraw->writebuf, mtdraw->write_ofs);
retlen += ret;
numpage = mtdraw->write_ofs / (mtd->writesize + mtd->oobsize);
ret = mtdraw_blkwrite(mtd, mtdraw->writebuf,
mtd->writesize * numpage);
mtdraw->write_fill = 0;
}
@ -208,6 +209,7 @@ static ssize_t mtdraw_write(struct cdev *cdev, const void *buf, size_t count,
if (ret >= 0 && count) {
mtdraw->write_ofs = offset - mtdraw->write_fill;
mtdraw_fillbuf(mtdraw, buf + retlen, count);
retlen += count;
}
if (ret < 0) {