Alan Stern wrote: > I don't follow your reasoning. The Logitech mouse is also driven by > xhci-hcd, and so is the Azurewave webcam. Ah OK, I was under the impression that ehci_hcd was handling these, since it shows up as used driver in the lspci output.
Anyway, I did some more tests. 1) I removed XHCI support from the kernel config and retried the plug/unplug procedure with that kernel. Turns out that this makes the issue worse. The system now wakes up even when the drive is still plugged in. 2) I build XHCI as module and proceeded with this one. Suspend works properly with the drive plugged in. I then unplugged it and unloaded the XHCI module. Same issue appears (system immediately wakes up from suspend). I then reloaded the XHCI module. This fixes the issue! So something from the 'regular' initialization/deinitilization procedure is missing when doing suspend/resume of the XHCI. > I don't know what would be appropriate. Someone more familiar with the > xhci-hcd driver might be able to help. > > It's not always easy to tell why a device sends a wakeup signal. Hmm, I got the impression that this issue is very similar to the spurious wakeup problem when doing a system shutdown (and then the system just reboots). Only just that this affects suspend and not shutdown. With best wishes, Tobias -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
