[PATCH] xyzModem: Correct xmodem blk verification conditions

[jihongbin]

This is a duplicate, please ignore

在 2024/2/6 10:49, Hongbin Ji 写道:
> When the blk sequence number is 255 and cblk is 0, the original XOR condition
> produces a result of 0,and the judgment condition will be unsuccessful.
>
> Signed-off-by: Hongbin Ji <jhb_ee at 163.com>
> ---
>   common/xyzModem.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/common/xyzModem.c b/common/xyzModem.c
> index fb319f7119..0bc1a87067 100644
> --- a/common/xyzModem.c
> +++ b/common/xyzModem.c
> @@ -373,7 +373,7 @@ xyzModem_get_hdr (void)
>       }
>     ZM_DEBUG (zm_dump (__LINE__));
>     /* Validate the message */
> -  if ((xyz.blk ^ xyz.cblk) != (unsigned char) 0xFF)
> +  if (~xyz.blk != xyz.cblk)
>       {
>         ZM_DEBUG (zm_dprintf
>   		("Framing error - blk: %x/%x/%x\n", xyz.blk, xyz.cblk,