On Tue, Sep 22, 2015 at 02:58:57PM +0300, Mathias Nyman wrote: > But can you find a "No Ping response error, Skip one Isoc TD" entry in the log that didn't cause any > harm, e.g. it was not followed by a "ERROR Transfer event TRB DMA.." entry, and continued working > > If yes, then the patch helped. Now I did: [83013.334248] xhci_hcd 0000:00:14.0: Endpoint 0x83 ep reset callback called [83013.334249] xhci_hcd 0000:00:14.0: Endpoint 0x84 ep reset callback called [83013.334250] xhci_hcd 0000:00:14.0: Endpoint 0x5 ep reset callback called [83013.334251] xhci_hcd 0000:00:14.0: Endpoint 0x86 ep reset callback called [83014.321913] xhci_hcd 0000:00:14.0: ERROR no room on ep ring, try ring expansion [83014.321923] xhci_hcd 0000:00:14.0: ring expansion succeed, now has 4 segments [83024.091739] xhci_hcd 0000:00:14.0: overrun event on endpoint [83024.091802] xhci_hcd 0000:00:14.0: overrun event on endpoint [83025.817685] xhci_hcd 0000:00:14.0: No Ping response error, Skip one Isoc TD [83025.817692] xhci_hcd 0000:00:14.0: All tds on the ep_ring skipped. Clear skip flag. [83025.817803] xhci_hcd 0000:00:14.0: No Ping response error, Skip one Isoc TD [83025.817806] xhci_hcd 0000:00:14.0: All tds on the ep_ring skipped. Clear skip flag. [83025.817928] xhci_hcd 0000:00:14.0: No Ping response error, Skip one Isoc TD [83025.817931] xhci_hcd 0000:00:14.0: All tds on the ep_ring skipped. Clear skip flag. [83025.818053] xhci_hcd 0000:00:14.0: No Ping response error, Skip one Isoc TD [83025.818056] xhci_hcd 0000:00:14.0: All tds on the ep_ring skipped. Clear skip flag. [83025.821976] xhci_hcd 0000:00:14.0: Port Status Change Event for port 11 [83025.821988] xhci_hcd 0000:00:14.0: handle_port_status: starting port polling. /* Steinar */ -- Homepage: http://www.sesse.net/ -- 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