cmd: i2c: fix coverity issue

coverity scan reported issue:
** CID 583415:       Integer handling issues  (INTEGER_OVERFLOW)
/cmd/i2c.c: 369           in do_i2c_write()

change the length variable into type int.

Signed-off-by: Heiko Schocher <hs@denx.de>

diff --git a/cmd/i2c.c b/cmd/i2c.c
index f0aae93..e021067 100644 (file)
--- a/cmd/i2c.c
+++ b/cmd/i2c.c
@@ -299,7 +299,8 @@ static int do_i2c_write(struct cmd_tbl *cmdtp, int flag, int argc,
                        char *const argv[])
 {
        uint    chip;
-       uint    devaddr, length;
+       uint    devaddr;
+       int length;
        int alen;
        u_char  *memaddr;
        int ret;