Re: USB 2.0 ehci failure with large amount of RAM (4GB) on x86_64

[Nathan Becker]

In my last message I sent a patch that I thought fixed the problem.

I made a mistake in my testing.  It turns out that my patch doesn't
have an effect on this problem.  What I discovered was a workaround: 
If I rmmod ehci-hcd and then modprobe it back in, usb 2.0 it works. 
That's what I did when I tested my patched version, so I mistakenly
thought it was my patch that fixed it.

So it seems that there is something that happens when the ehci-hcd
shuts down that helps initialize it to work properly.  What could it
be?
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