Messages in this thread | | | Date | Tue, 13 May 2003 23:48:30 +0200 | Subject | Re: 2.5.69 Interrupt Latency | From | Helge Hafting <> |
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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?
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