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[PATCH] mtd corruption fix 

Read the return value before we release the nand device otherwise the
value can become corrupted by another user of chip->ops, ultimately
resulting in filesystem corruption.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Acked-by: Josh Boyer <jwboyer@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Richard Purdie 2006-08-27 01:23:33 -07:00 committed by Linus Torvalds
parent 6946bd6363
commit 7fd5aecc5d
1 changed files with 4 additions and 2 deletions
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6
drivers/mtd/nand/nand_base.c
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@ -1093,9 +1093,10 @@ static int nand_read(struct mtd_info *mtd, loff_t from, size_t len,
ret = nand_do_read_ops(mtd, from, &chip->ops); ret = nand_do_read_ops(mtd, from, &chip->ops);
*retlen = chip->ops.retlen;
nand_release_device(mtd); nand_release_device(mtd);
*retlen = chip->ops.retlen;
return ret; return ret;
} }
@ -1691,9 +1692,10 @@ static int nand_write(struct mtd_info *mtd, loff_t to, size_t len,
ret = nand_do_write_ops(mtd, to, &chip->ops); ret = nand_do_write_ops(mtd, to, &chip->ops);
*retlen = chip->ops.retlen;
nand_release_device(mtd); nand_release_device(mtd);
*retlen = chip->ops.retlen;
return ret; return ret;
} }