On Wed, Oct 16, 2019 at 4:33 PM Geert Uytterhoeven
<geert+renesas@xxxxxxxxx> wrote:
> If the DTB for a device with an RZ/A2 SoC lacks a device node for the
> BSID register, the ID validation code falls back to using a register at
> address 0x0, which leads to undefined behavior (e.g. reading back a
> random value).
>
> This could be fixed by letting fam_rza2.reg point to the actual BSID
> register. However, the hardcoded fallbacks were meant for backwards
> compatibility with old DTBs only, not for new SoCs. Hence fix this by
> validating renesas_family.reg before using it.
>
> Fixes: 175f435f44b724e3 ("soc: renesas: identify RZ/A2")
> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Queuing in renesas-devel for v5.5.
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
