Hi Morimoto-san,
On Wed, Sep 10, 2014 at 3:29 AM, Kuninori Morimoto
<[email protected]> wrote:
> + if (is_read) {
> + extra = sd_ctrl_read16(host, CTL_SD_DATA_PORT);
> +
> + *buf8 = (u8)(extra & 0xff);
> + } else {
> + extra = (u16)(*buf8);
> +
> + sd_ctrl_write16(host, CTL_SD_DATA_PORT, extra);
The casts to "u8" resp. "u16" are not needed.
You can even avoid introducing the "extra" variable:
if (is_read)
*buf8 = sd_ctrl_read16(host, CTL_SD_DATA_PORT) & 0xff;
else
sd_ctrl_write16(host, CTL_SD_DATA_PORT, *buf8);
Technically, the "& 0xff" is also not needed, but I'd keep it for clarity.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected]
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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