Richard and I discussed this some more.
We agreed that
> > num_ports = readl (&ohci->regs->roothub.a) & 0xff;
num_ports in this case is bogus because hc_reset()
has already failed with both "USB HC TakeOver failed" and
"USB HC reset timed out" messages.
In his log file, num_ports was reported as 255, so this
readl() was returning at least 0xff, maybe even 0xff...ff.
~Randy
> -----Original Message-----
> From: David Brownell [mailto:[EMAIL PROTECTED]]
>
> That could be masking with 0x0f ... the spec says that OHCI may
> have from one to fifteen ports, but allocates an extra four bits
> in that register. Better, maybe have the driver report an error
> if those extra four bits aren't zero (num_ports > 15). Something
> clearly is pretty broken if that's ever seen ... as you noticed.
>
> If the alpha is really looking at the right location for that
> register, then whatever OHCI its using has a big problem. I'd
> guess that it's got the wrong OHCI register base address.
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