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authorAndrew Morton <akpm@osdl.org>2006-05-20 13:17:21 +0400
committerDavid Woodhouse <dwmw2@infradead.org>2006-05-20 13:17:21 +0400
commit6c8b44abc86a3e23dd1a22c0ee187f06bd7c7f5d (patch)
tree8b40f20e9c0dda7a52a39a14d131684d3549a3d3 /drivers/mtd/mtdconcat.c
parent5fc3dbc418e01345e25e96b3192a1c46051c3fdc (diff)
downloadlinux-6c8b44abc86a3e23dd1a22c0ee187f06bd7c7f5d.tar.xz
[MTD] Avoid 64-bit division in mtdconcat
WARNING: "__moddi3" [drivers/mtd/mtdconcat.ko] undefined! Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'drivers/mtd/mtdconcat.c')
-rw-r--r--drivers/mtd/mtdconcat.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c
index b7de90845c2d..3c61a980c56c 100644
--- a/drivers/mtd/mtdconcat.c
+++ b/drivers/mtd/mtdconcat.c
@@ -19,6 +19,8 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/concat.h>
+#include <asm/div64.h>
+
/*
* Our storage structure:
* Subdev points to an array of pointers to struct mtd_info objects
@@ -276,9 +278,11 @@ concat_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs,
return -EINVAL;
/* Check alignment */
- if (mtd->oobblock > 1)
- if ((to % mtd->oobblock) || (total_len % mtd->oobblock))
+ if (mtd->oobblock > 1) {
+ loff_t __to = to;
+ if (do_div(__to, mtd->oobblock) || (total_len % mtd->oobblock))
return -EINVAL;
+ }
/* make a copy of vecs */
vecs_copy = kmalloc(sizeof(struct kvec) * count, GFP_KERNEL);