From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Bottomley Subject: ipr boot failure caused by MSI (2.6.30-rc1+) Date: Thu, 21 May 2009 12:15:59 -0500 Message-ID: <1242926159.3007.5.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from bedivere.hansenpartnership.com ([66.63.167.143]:56458 "EHLO bedivere.hansenpartnership.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753662AbZEURP7 (ORCPT ); Thu, 21 May 2009 13:15:59 -0400 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Wayne Boyer , Brian King Cc: linux-scsi Kernels after 2.6.30-rc1 stopped booting on my powerstation. The ipr just times out and refuses to probe devices. If I let it drop into the initramfs system, this is what the interrupts shows: (initramfs) cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 16: 20 10 13 11 MPIC Level pata_amd 20: 0 0 0 0 MPIC Level ohci_hcd:usb1, ohci_hcd:usb2 21: 0 0 0 0 MPIC-U3MSI Edge ipr 68: 37 37 48 37 MPIC Edge serial 251: 10 71 69 72 MPIC Edge ipi call function 252: 1555 1779 1372 1155 MPIC Edge ipi reschedule 253: 0 0 0 0 MPIC Edge ipi call function single 254: 0 0 0 0 MPIC Edge ipi debugger BAD: 416 So you see the IPR is the only device not receiving them. I can fix the boot hang by reverting commit 5a9ef25b14d39b8413364df12cb8d9bb7a673a32 Author: Wayne Boyer Date: Fri Jan 23 09:17:35 2009 -0800 [SCSI] ipr: add MSI support The system in question is: SYSTEM INFORMATION Processor = PowerPC,970MP @ 2500 MHz I/O Bridge = U4 (4.4) SMP Size = 4 (#0 #1 #2 #3) Boot-Date = 2009-04-21 17:13:36 Memory = 2 GB of RAM @ 666 MHz Board Type = Bimini (7047191/0000000/1) MFG Date = 1608 Part No. = 10N8748 FRU No. = 10N7182 FRU Serial = YL30W8106038 UUID = 00000000000000000000000000000000 Flashside = 1 (temporary) Version = HEAD Build Date = 12-04-2008 16:13 James