Re: PROBLEM: PS/2 keyboard does not work with 2.6.15

[Alan Stern <stern@rowland.harvard.edu>]

On Sat, 14 Jan 2006, Walt H wrote:

> OK.  No lines reporting handoff problems in any of the boots.  The only 
> boot in which I still have a keyboard is when I comment out the OHCI 
> handoff.  I saved dmesg's of all boots, and ran diffs against them.  The 
> uncommented handoffs and the EHCI commented handoff are essentially the 
> same (where the OHCI handoff code still executes in both).  The relevant 
> (diff'd) sections are:
> 
> @@ -153,3 +153,2 @@
> -i8042.c: Can't read CTR while initializing i8042.
> -pnp: Device 00:09 does not supported disabling.
> -pnp: Device 00:08 does not supported disabling.
> +serio: i8042 AUX port at 0x60,0x64 irq 12
> +serio: i8042 KBD port at 0x60,0x64 irq 1
> @@ -219,0 +219 @@
> +input: AT Translated Set 2 keyboard as /class/input/input0
> @@ -234,0 +235 @@
> +input: PS/2 Generic Mouse as /class/input/input1
> @@ -268 +269 @@
> -input: Logitech USB Mouse as /class/input/input0
> +input: Logitech USB Mouse as /class/input/input2
> 
> Hope that helps,

That's good; you've narrowed it down to the OHCI handoff.

Now try editing the quirk_usb_handoff_ohci() routine.  There's the section 
enclosed in "#ifndef __hppa__" and the two writel() calls after it.  Add 
printk statements to see which writes are taking place, try commenting out 
some of the writes -- in general, see what makes a difference.

Unfortunately I can't give you any detailed suggestions because I don't 
know how the hardware is supposed to work.

Alan Stern

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/