From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753246Ab1AVOTa (ORCPT ); Sat, 22 Jan 2011 09:19:30 -0500 Received: from fmmailgate03.web.de ([217.72.192.234]:35036 "EHLO fmmailgate03.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752728Ab1AVOT3 (ORCPT ); Sat, 22 Jan 2011 09:19:29 -0500 From: Markus To: lkml Subject: USB3: ERROR no room on ep ring Date: Sat, 22 Jan 2011 15:19:26 +0100 User-Agent: KMail/1.13.5 (Linux/2.6.38-rc1-gentoo; KDE/4.5.5; x86_64; ; ) MIME-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Message-Id: <201101221519.26538.M4rkusXXL@web.de> X-Provags-ID: V01U2FsdGVkX1+MOQ+xepzO1qLKHlD8fEujGZI92VHnPXjJ1xsF VBpGlWnKkHQJrX5+PEr5DHLtLqYfIsae8t4wLHMohqB3OROww0 oiXbdxJ6E= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This computer has some usb2 ports and two usb3 ports. Its a NEC usb3-chip and is detected correctly. But when I plug in my headset its not working as expected (although usb3 should be downwards compatible to usb2 and usb1). In dmesg I read the following: usb 1-3: new full speed USB device using xhci_hcd and address 3 xhci_hcd 0000:04:00.0: WARN: Stalled endpoint xhci_hcd 0000:04:00.0: WARN: Stalled endpoint xhci_hcd 0000:04:00.0: WARN: Stalled endpoint xhci_hcd 0000:04:00.0: WARN: short transfer on control ep xhci_hcd 0000:04:00.0: WARN: short transfer on control ep xhci_hcd 0000:04:00.0: WARN: short transfer on control ep usb 1-3: New USB device found, idVendor=1395, idProduct=0020 usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 1-3: Product: Sennheiser USB headset usb 1-3: Manufacturer: Sennheiser Communication usb 1-3: ep 0x83 - rounding interval to 128 microframes, ep desc says 240 microframes xhci_hcd 0000:04:00.0: WARN: short transfer on control ep xhci_hcd 0000:04:00.0: WARN: short transfer on control ep xhci_hcd 0000:04:00.0: WARN: Stalled endpoint 3:1:1: cannot get freq at ep 0x4 xhci_hcd 0000:04:00.0: WARN: Stalled endpoint 3:1:2: cannot get freq at ep 0x4 xhci_hcd 0000:04:00.0: WARN: Stalled endpoint 3:2:1: cannot get freq at ep 0x84 xhci_hcd 0000:04:00.0: ERROR no room on ep ring => 54 more times generic-usb: probe of 0003:1395:0020.0007 failed with error -12 The rounding from 240 to 128 looks pretty strange, but I am not very common with that ;) For comparison the output when I connect the very same headset on an usb2 port: usb 3-9: new full speed USB device using ohci_hcd and address 9 usb 3-9: New USB device found, idVendor=1395, idProduct=0020 usb 3-9: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 3-9: Product: Sennheiser USB headset usb 3-9: Manufacturer: Sennheiser Communication 9:1:1: cannot get freq at ep 0x4 9:1:2: cannot get freq at ep 0x4 9:2:1: cannot get freq at ep 0x84 input: Sennheiser Communication Sennheiser USB headset as /devices/pci0000:00/0000:00:02.0/usb3/3-9/3-9:1.3/input/input7 generic-usb 0003:1395:0020.0008: input: USB HID v1.11 Device [Sennheiser Communication Sennheiser USB headset] on usb-0000:00:02.0-9/input3 This output is from a 2.6.38-rc1. I knew from ehci that [uo]hci must be loaded before, so ehci claims the hardware and can pass usb1x device to the [uo]hci driver. It seems xhci is doing everything on its own? Or is just something broken? Is this a known problem that is worked on? Anything more I can contribute? Thanks, Markus PS: Please CC me.