Re: 2.5.69 Interrupt Latency

[Helge Hafting]

On Tue, May 13, 2003 at 05:35:47PM -0400, Alan Stern wrote:
> My take is that wakeup_hc() is getting called whenever some stray signal
> causes the device to generate an interrupt, and then a little while later
> the stall timer routine calls suspend_hc() since nothing is active.  The
> interrupts are probably indistinguishable from what you would get if a new
> device really had just been attached to the bus.
>
Could this also happen if the USB interrupt is shared?
The other device interrupts, and the kernel calls into
usb interrupt routine just in case USB has some data too?

Helge Hafting