On Sat, 30 Aug 2003, Duncan Sands wrote:

> Long ago I posted a bug fix for a VIA add on uhci card (plugging in a new
> device disconnects existing devices)  The workaround is to suspend the
> hc before doing the PORT_RESET for the new device, and wake it up
> afterwards.
> 
> However this is problematic in 2.5/6: if you suspend the hc, it immediately
> wakes up (need for wakeup detected in uhci_irq).  So I need a way to
> forceably suspend the hc, so that it only wakes up when I say so.  This
> certainly means complicating the existing code in uhci-hcd.  Any comments
> and suggestions for the best way to do this before I start hacking?

This turns out to be a very good time to ask that question, as I am just 
about to start fixing up the suspend/resume code in uhci-hcd.  I'll put in 
a hook for forceably suspending and sent it to you when it's ready.  Is 
that okay?

Alan Stern



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