[PATCH v4 45/47] net/wan/fsl_ucc_hdlc: reject muram offsets above 64K

[Timur Tabi]

On Fri, Nov 8, 2019 at 7:04 AM Rasmus Villemoes
<linux at rasmusvillemoes.dk> wrote:

> diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c
> index 8d13586bb774..f029eaa7cfc0 100644
> --- a/drivers/net/wan/fsl_ucc_hdlc.c
> +++ b/drivers/net/wan/fsl_ucc_hdlc.c
> @@ -245,6 +245,11 @@ static int uhdlc_init(struct ucc_hdlc_private *priv)
>                 ret = -ENOMEM;
>                 goto free_riptr;
>         }
> +       if (riptr != (u16)riptr || tiptr != (u16)tiptr) {

"riptr/tiptr > U16_MAX" is clearer.