CC gregkh, linux-serial
On Sun, Jul 22, 2018 at 3:02 PM Yoshinori Sato
<ysato@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> H8/300 SCI registers allocated byte address.
> It must support to the case where shift count is 0.
>
> Changes v2.
> more simply code.
>
> Signed-off-by: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> --- a/drivers/tty/serial/sh-sci.c
> +++ b/drivers/tty/serial/sh-sci.c
> @@ -2863,10 +2863,12 @@ static int sci_init_single(struct platform_device *dev,
> port->fifosize = sci_port->params->fifosize;
>
> if (port->type == PORT_SCI) {
> - if (sci_port->reg_size >= 0x20)
> - port->regshift = 2;
> - else
> - port->regshift = 1;
> + /*
> + * reg_size < 0x10: BYTE aligned (scale factor=1).
> + * reg_size >= 0x10 and < 0x20: WORD aligned (scale factor=2).
> + * reg_size >= 0x20: DWORD aligned (scale factor=4).
> + */
> + port->regshift = sci_port->reg_size >> 4;
> }
>
> /*
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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