Lonnie Mendez wrote:
known problems:
1. under linux the uhci controller reports an error if no usb device is
connected
The port registers on the uhci controller shows no appropriate
response to an HCHALT command that is issued and so the hcd puts the
controller into global suspend.
The problem is more likely that the controller is being suspended but
there is currently nothing being done to signal it to wake up on
appropriate events. If the error/warning message you got was something
like "controller still running" then changing uhci writew to always set
UHCI_STS_HCHALTED on writing 0 to bit 0 of cmd register seems to clear
the message. That means having the bit set in the frame is a bit
redundant and also makes the bit a less accurate indicator of hchalt.
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