Hi Hans,
On Thu, 03 Jul 2008 22:18:51 +0200, Hans de Goede wrote:
> Alistair John Strachan wrote:
> > Hi,
> >
> > On Sunday 08 June 2008 16:16:33 Mark M. Hoffman wrote:
> >>> It has been reported that the abituguru3 driver fails to load after a
> >>> BIOS update. This patch fixes this by loosening the detection routine so
> >>> that it will work after the BIOS update too. To compensate for the now
> >>> very loose detection an additional check is added on the DMI Base Board
> >>> vendor string to make sure we only load on Abit motherboards, this is the
> >>> same as the check in the abituguru (1 / 2) driver.
> >>>
> >>> Signed-of-by: Hans de Goede <j.w.r.degoede at hhs.nl>
> >> Applied to hwmon-2.6.git/testing, thanks.
> >>
> >> (will include in final batch to Linus for 2.6.26 also)
> >
> > After updating my BIOS (from 16 to 17) the driver has stopped loading
> > again. This is with 2.6.26-rc8. The reason is that the command byte has
> > changed value to 0xFF (this is reproducible across cold and warm starts).
> >
> > The following diff fixes it, but the "probe" is now looking even more creaky..
> >
>
> Ah what fun, well luckily I've added the DMI based check so the detection
> routine is less important now.
>
> Mark, please apply.
I have to object. 0xff is the value you would get without a chip at
this address. So the change is roughly equivalent to not testing the
port at all... Plus, if the possible values change with every BIOS
update, we have to admit that the detection method isn't reliable. What
about switching to a DMI-based check? Not only checking the board
manufacturer but also the board product name. The abituguru3 driver
requires board-specific data anyway, so that's not a big change. And
there's always the "force" parameter to bypass the check for new boards.
> Acked-by: Hans de Goede <j.w.r.degoede at hhs.nl>
>
> > ---
> >
> > Fix loading of abituguru3 on Abit IP35 Pro with BIOS 17. The magic bytes have
> > changed value (again).
> >
> > Signed-off-by: Alistair John Strachan <alistair at devzero.co.uk>
> >
> > diff --git a/drivers/hwmon/abituguru3.c b/drivers/hwmon/abituguru3.c
> > index f00f497..53ee148 100644
> > --- a/drivers/hwmon/abituguru3.c
> > +++ b/drivers/hwmon/abituguru3.c
> > @@ -1118,7 +1118,7 @@ static int __init abituguru3_detect(void)
> > u8 cmd_val = inb_p(ABIT_UGURU3_BASE + ABIT_UGURU3_CMD);
> > if (((data_val == 0x00) || (data_val == 0x08)) &&
> > ((cmd_val == 0xAC) || (cmd_val == 0x05) ||
> > - (cmd_val == 0x55)))
> > + (cmd_val == 0x55) || (cmd_val == 0xFF)))
> > return ABIT_UGURU3_BASE;
> >
> > ABIT_UGURU3_DEBUG("no Abit uGuru3 found, data = 0x%02X, cmd = "
> >
> >
--
Jean Delvare
