On Tue, 1 Apr 2014, Nikola Ciprich wrote: > Hi, > > I'm testing brand new Eaton 5E 1500i UPS connected via USB. > I'm using nut usespace SW trying to communicate with UPS via USBHID. > > under both 3.10 and 3.13 kernels, I only get > > [Apr 1 10:56] usb 2-1.1: usbfs: USBDEVFS_CONTROL failed cmd usbhid-ups rqt 128 rq 6 len 255 ret -110 Error code -110 is -ETIMEDOUT. I don't know why a command would time out under one kernel but not another. > under 3.14 it works. However I'd really love to get this working under 3.10.x > kernel, so my idea was to backport needed fixes/patches to 3.10 (possibly getting > them to -stable if appropriate). > > I don't see any obvious patches in git to try, so I was wandering, > maybe somebody could give me a hint on what to check? It's pretty hard to say without more information. For example, usbmon traces under 3.13 and 3.14 would be a good start. It might also help to see a kernel log with CONFIG_USB_DEBUG enabled. > or is this all nonsense? Instead of trying to backport patches, why not just upgrade the whole kernel? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
