Hi Lawrence, Could I have the .config file used for working 2.6.35.7? For my setup, with CONFIG_ARCH_SUPPORTS_MSI=y, the "make" command to build kernel always sets the CONFIG_PCI_MSI=y in .config file. Thanks, Dong -----Original Message----- From: linux-usb-owner@xxxxxxxxxxxxxxx [mailto:linux-usb-owner@xxxxxxxxxxxxxxx] On Behalf Of Lawrence Rust Sent: Friday, October 22, 2010 1:41 PM To: sarah.a.sharp@xxxxxxxxxxxxxxx Cc: linux-usb@xxxxxxxxxxxxxxx Subject: BUG: xhci_hcd Spurious interrupt Hi, Just built a 2.6.36 kernel and on re-booting got this error: Oct 22 10:13:05 gagarin kernel: [ 5.157428] xhci_hcd 0000:01:00.0: Failed to enable MSI-X Oct 22 10:13:05 gagarin kernel: [ 5.157448] xhci_hcd 0000:01:00.0: failed to allocate MSI entry followed by a stream of these... Oct 22 10:13:05 gagarin kernel: [ 5.891099] xhci_hcd 0000:01:00.0: Spurious interrupt. Oct 22 10:13:05 gagarin kernel: [ 9.038074] xhci_hcd 0000:01:00.0: Spurious interrupt. Oct 22 10:13:05 gagarin kernel: [ 9.088027] xhci_hcd 0000:01:00.0: Spurious interrupt. Oct 22 10:13:05 gagarin kernel: [ 9.137971] xhci_hcd 0000:01:00.0: Spurious interrupt. repeated until re-boot. The .config file used for this build was from a working 2.6.35.7 using defaults for all differences. NB this config had MSI disabled: CONFIG_ARCH_SUPPORTS_MSI=y # CONFIG_PCI_MSI is not set After re-building the kernel with MSI enabled: CONFIG_ARCH_SUPPORTS_MSI=y CONFIG_PCI_MSI=y the error message and spurious interrupts went away. The motherboard is a Gigabyte GA-H55M-USB3 http://www.gigabyte.com/products/product-page.aspx?pid=3444#ov lspci -s 01:00.0 -v 01:00.0 USB Controller: NEC Corporation Device 0194 (rev 03) (prog-if 30) Subsystem: Giga-byte Technology Device 5007 Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at fbdfe000 (64-bit, non-prefetchable) [size=8K] Capabilities: [50] Power Management version 3 Capabilities: [70] Message Signalled Interrupts: Mask- 64bit+ Queue=0/3 Enable- Capabilities: [90] MSI-X: Enable+ Mask- TabSize=8 Capabilities: [a0] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting <?> Capabilities: [140] Device Serial Number ff-ff-ff-ff-ff-ff-ff-ff Capabilities: [150] #18 Kernel driver in use: xhci_hcd Kernel modules: xhci-hcd Running "sh scripts/ver_linux" on the MSI enabled kernel reports: Linux gagarin 2.6.36-ga #2 SMP Fri Oct 22 11:03:10 CEST 2010 i686 GNU/Linux Gnu C 4.4.3 Gnu make 3.81 binutils 2.20.1 util-linux 2.17.2 mount support module-init-tools 3.11.1 e2fsprogs 1.41.11 pcmciautils 014 Linux C Library 2.11.1 Dynamic linker (ldd) 2.11.1 Procps 3.2.8 Net-tools 1.60 Kbd 1.15 Sh-utils 7.4 wireless-tools 30 Modules Loaded xhci_hcd usblp binfmt_misc vboxnetadp vboxnetflt vboxdrv nfsd lockd sunrpc exportfs microcode ext2 dm_crypt snd_hda_codec_intelhdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec firmware_class snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi fbcon tileblit font bitblit softcursor snd_rawmidi i915 drm_kms_helper drm i2c_algo_bit video backlight output snd_seq_midi_event snd_seq snd_timer snd_seq_device snd joydev coretemp soundcore intel_agp it87 hwmon_vid lp parport usbhid hid r8169 mii agpgart snd_page_alloc -- Lawrence Rust -- 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 ÿô.nlj·Ÿ®‰†+%ŠË±é¥Šwÿº{.nlj·¥Š{±þë)íè jg¬±¨ ¶‰šŽŠÝjÿ¾«þG«é¸ ¢·¦j:+v‰¨Šwèm¶Ÿÿþø®w¥þŠà£¢·hšâÿ†Ù
