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Subject[PATCH] mtd: change len type from signed to unsigned type
From: "huijin.park" <>

assign of a signed value which has type 'int' to a variable of
a bigger unsigned integer type 'uint64_t'.
this is ok most of the time, but can lead to unexpectedly large
resulting value if the original signed value is negative.
in addtion, the callers of the erase_write() pass the len parameter
as unsigned type.

Signed-off-by: huijin.park <>
drivers/mtd/mtdblock.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/mtdblock.c b/drivers/mtd/mtdblock.c
index a5b1933..b2d5ed1 100644
--- a/drivers/mtd/mtdblock.c
+++ b/drivers/mtd/mtdblock.c
@@ -56,7 +56,7 @@ struct mtdblk_dev {

static int erase_write (struct mtd_info *mtd, unsigned long pos,
- int len, const char *buf)
+ unsigned int len, const char *buf)
struct erase_info erase;
size_t retlen;
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