From mboxrd@z Thu Jan 1 00:00:00 1970 From: Frank Rowand Subject: linux-3.6.11-rt30 smoke test on ARM Date: Thu, 7 Mar 2013 19:55:47 -0800 Message-ID: <51396143.5060108@am.sony.com> Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit To: Thomas Gleixner , , Return-path: Received: from mail-db8lp0187.outbound.messaging.microsoft.com ([213.199.154.187]:19572 "EHLO db8outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758903Ab3CHELB (ORCPT ); Thu, 7 Mar 2013 23:11:01 -0500 Sender: linux-rt-users-owner@vger.kernel.org List-ID: linux-3.6.11-rt30 builds and boots on some ARM boards (PandaBoard, Realview) for: - SMP, PREEMPT_RT_FULL - SMP, PREEMPT_NONE - UP, PREEMPT_RT_FULL - UP, PREEMPT_NONE The PandaBoard frequently fails to boot with an eth0 error. I have only seen this for SMP, PREEMPT_NONE. This same error also occurs in 3.6.7 without the RT_PREEMPT patches applied, so this does not appear to be an RT_PREEMPT issue. This error also occurred in the previous smoke test of linux-3.6.7-rt18 http://permalink.gmane.org/gmane.linux.rt.user/9202 The boot error starts with the USB time out on ep0out: [ 3.264373] smsc95xx 1-1.1:1.0: usb_probe_interface [ 3.269500] smsc95xx 1-1.1:1.0: usb_probe_interface - got id [ 3.275543] smsc95xx v1.0.4 [ 8.078674] smsc95xx 1-1.1:1.0: eth0: register 'smsc95xx' at usb-ehci-omap.0-1.1, smsc95xx USB 2.0 Ethernet, 82:b9:1d:fa:67:0d [ 8.091003] hub 1-1:1.0: state 7 ports 5 chg 0000 evt 0002 [ 13.509918] usb 1-1.1: swapper/0 timed out on ep0out len=0/4 [ 13.515869] smsc95xx 1-1.1:1.0: eth0: Failed to write register index 0x00000108 [ 13.523559] smsc95xx 1-1.1:1.0: eth0: Failed to write ADDRL: -110 [ 13.529998] IP-Config: Failed to open eth0 The boot error can be avoided with a workaround that simply retries the failed USB command. I will reply to this email with the patch. -Frank