From mboxrd@z Thu Jan 1 00:00:00 1970 From: arno@natisbad.org (Arnaud Ebalard) Date: Thu, 23 Jan 2014 09:24:41 +0100 Subject: [BUG] FL1009: xHCI host not responding to stop endpoint command. In-Reply-To: <20140122235620.GC20359@xanatos> (Sarah Sharp's message of "Wed, 22 Jan 2014 15:56:20 -0800") References: <87mwix5anm.fsf@natisbad.org> <20140116185044.GC18392@xanatos> <87fvon2khn.fsf@natisbad.org> <87zjmvau23.fsf@nemi.mork.no> <20140117205432.GB5618@xanatos> <87vbxhrmea.fsf@natisbad.org> <20140121211741.GA12657@xanatos> <87bnz364h0.fsf@natisbad.org> <20140122222641.GD29184@titan.lakedaemon.net> <87mwin4ozf.fsf@natisbad.org> <20140122235620.GC20359@xanatos> Message-ID: <87sisfjeba.fsf@natisbad.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Sarah, Sarah Sharp writes: >> > Can you pinpoint the commit that introduced the regression? >> >> f5182b4155b9d686c5540a6822486400e34ddd98 "xhci: Disable MSI for some Fresco Logic hosts." >> >> Technically, this is not per se the commit which introduced the >> regression but the one that *partially* fixed it by introducing the XHCI >> quirk to skip MSI enabling for Fresco Logic chips. The thing is it >> should have included the FL1009 in the targets. Sarah, can you confirm >> this? > > I don't know if it should have included FL1009, it was just a guess, > based on the fact that the 0x1000 and 0x1400 devices did need MSI > disabled. I can attempt to ask the Fresco Logic folks I know, but I'm > not sure if/when I'll get a response back. > > That still doesn't necessarily rule out MSI issues in the Marvell PCI > host controller code. Can you attach another PCI device with MSI > support under the host and see if it works? The various Armada-based devices I have are NAS which do not have PCIe slots to plug additional devices (everything is soldered). I don't know which device Thomas used for its tests. Just in case, I also added Willy in CC: who have various boards and may also have done more test with additional PCIe devices and CONFIG_PCI_MSI enabled on 3.13 kernel. Cheers, a+