Andrew Morton wrote (at Sat, 12 May 2007 18:02:40 -0700) :
quoted text
> 
> OK, thanks.
> 
> So that are we doing here?  We try the pre-Truxton code and if that didn't
> work we try the post-Truxton code?  Hard to see how that could go wrong.
> 
> Truxton, can you please test it for us?

Hi,

Hiroto Shibuya wrote to tell me that he has a VIA EPIA-EK10000
which suffers from the reboot problem when no keyboard is attached.
My first patch works for him :

  http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=59f4e7d572...

But the latest patch does not work for him :

  http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8b93789808...

We found that it was necessary to also set the "disable keyboard"
flag in the command byte, as the first patch was doing.  The
second patch tries to minimally modify the command byte, but
it is not enough.

Please consider this simple one-line patch to help people with
low end VIA motherboards reboot when no keyboard is attached.
Hiroto Shibuya has verified that this works for him (as I
no longer have an afflicted machine) :

This patch is against linux-2.6.23-rc9/include/asm-i386/mach-default/mach_reboot.h

--- mach_reboot.h       Mon Oct  1 20:24:52 2007
+++ mach_reboot.h.new   Tue Oct  2 19:22:13 2007
@@ -49,7 +49,7 @@
                udelay(50);
                kb_wait();
                udelay(50);
-               outb(cmd | 0x04, 0x60); /* set "System flag" */
+               outb(cmd | 0x14, 0x60); /* set "System flag" and "Keyboard Disabled" */
                udelay(50);
                kb_wait();
                udelay(50);


Thanks,

-Truxton
-
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