On Thu, 2010-11-04 at 13:14 -0500, Nguyen, Dong wrote: > Hi Lawrence, > > I think the issues with legacy INTx occurs on some platforms when the USB3 controller shares the interrupt with other devices. That's correct, on this m/b the NEC USB3 controller shares an interrupt with a uhci_usb controller and the i915 graphics controller. > What's motherboard you was be able to run the kernel 2.6.35.7 with CONFIG_PCI_MSI=n? Is it on the same Gigabyte GA-H55M-USB3? The config was for the Gigabyte GA-H55M-USB3. Here's the output of lspci -v. Note the three devices sharing IRQ 16. 00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 12) Subsystem: Giga-byte Technology Device 5000 Flags: bus master, fast devsel, latency 0 Capabilities: [e0] Vendor Specific Information <?> Kernel driver in use: agpgart-intel Kernel modules: intel-agp 00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 12) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 Memory behind bridge: fbd00000-fbdfffff Capabilities: [88] Subsystem: Giga-byte Technology Device 5001 Capabilities: [80] Power Management version 3 Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable- Capabilities: [a0] Express Root Port (Slot+), MSI 00 Capabilities: [100] Virtual Channel <?> Kernel driver in use: pcieport 00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 12) Subsystem: Giga-byte Technology Device d000 Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at fb400000 (64-bit, non-prefetchable) [size=4M] Memory at e0000000 (64-bit, prefetchable) [size=256M] I/O ports at ff00 [size=8] Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable- Capabilities: [d0] Power Management version 2 Capabilities: [a4] PCIe advanced features <?> Kernel driver in use: i915 Kernel modules: i915 00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06) Subsystem: Giga-byte Technology Device 3b64 Flags: bus master, fast devsel, latency 0, IRQ 12 Memory at fbfff000 (64-bit, non-prefetchable) [size=16] Capabilities: [50] Power Management version 3 Capabilities: [8c] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- 00:1a.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB Universal Host Controller (rev 06) Subsystem: Giga-byte Technology Device 5004 Flags: bus master, medium devsel, latency 0, IRQ 16 I/O ports at fe00 [size=32] Capabilities: [50] PCIe advanced features <?> Kernel driver in use: uhci_hcd 00:1a.1 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB Universal Host Controller (rev 06) Subsystem: Giga-byte Technology Device 5004 Flags: bus master, medium devsel, latency 0, IRQ 21 I/O ports at fd00 [size=32] Capabilities: [50] PCIe advanced features <?> Kernel driver in use: uhci_hcd 00:1a.2 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB Universal Host Controller (rev 06) Subsystem: Giga-byte Technology Device 5004 Flags: bus master, medium devsel, latency 0, IRQ 18 I/O ports at fc00 [size=32] Capabilities: [50] PCIe advanced features <?> Kernel driver in use: uhci_hcd 00:1a.7 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06) (prog-if 20) Subsystem: Giga-byte Technology Device 5006 Flags: bus master, medium devsel, latency 0, IRQ 18 Memory at fbffe000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCIe advanced features <?> Kernel driver in use: ehci_hcd 00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06) Subsystem: Giga-byte Technology Device a102 Flags: bus master, fast devsel, latency 0, IRQ 22 Memory at fbff4000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [100] Virtual Channel <?> Capabilities: [130] Root Complex Link <?> Kernel driver in use: HDA Intel Kernel modules: snd-hda-intel 00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 06) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=02, subordinate=02, sec-latency=0 I/O behind bridge: 0000d000-0000dfff Memory behind bridge: fbc00000-fbcfffff Prefetchable memory behind bridge: 00000000d7c00000-00000000d7dfffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable- Capabilities: [90] Subsystem: Giga-byte Technology Device 5001 Capabilities: [a0] Power Management version 2 Kernel driver in use: pcieport 00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 06) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=03, subordinate=03, sec-latency=0 I/O behind bridge: 0000e000-0000efff Memory behind bridge: fbb00000-fbbfffff Prefetchable memory behind bridge: 00000000fbe00000-00000000fbefffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable- Capabilities: [90] Subsystem: Giga-byte Technology Device 5001 Capabilities: [a0] Power Management version 2 Kernel driver in use: pcieport 00:1d.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB Universal Host Controller (rev 06) Subsystem: Giga-byte Technology Device 5004 Flags: bus master, medium devsel, latency 0, IRQ 23 I/O ports at fb00 [size=32] Capabilities: [50] PCIe advanced features <?> Kernel driver in use: uhci_hcd 00:1d.1 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB Universal Host Controller (rev 06) Subsystem: Giga-byte Technology Device 5004 Flags: bus master, medium devsel, latency 0, IRQ 19 I/O ports at fa00 [size=32] Capabilities: [50] PCIe advanced features <?> Kernel driver in use: uhci_hcd 00:1d.2 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB Universal Host Controller (rev 06) Subsystem: Giga-byte Technology Device 5004 Flags: bus master, medium devsel, latency 0, IRQ 18 I/O ports at f900 [size=32] Capabilities: [50] PCIe advanced features <?> Kernel driver in use: uhci_hcd 00:1d.7 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06) (prog-if 20) Subsystem: Giga-byte Technology Device 5006 Flags: bus master, medium devsel, latency 0, IRQ 23 Memory at fbffd000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCIe advanced features <?> Kernel driver in use: ehci_hcd 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev a6) (prog-if 01) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=04, subordinate=04, sec-latency=32 Capabilities: [50] Subsystem: Giga-byte Technology Device 5000 00:1f.0 ISA bridge: Intel Corporation 5 Series Chipset LPC Interface Controller (rev 06) Subsystem: Giga-byte Technology Device 5001 Flags: bus master, medium devsel, latency 0 Capabilities: [e0] Vendor Specific Information <?> 00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller (rev 06) (prog-if 01) Subsystem: Giga-byte Technology Device b005 Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 19 I/O ports at f800 [size=8] I/O ports at f700 [size=4] I/O ports at f600 [size=8] I/O ports at f500 [size=4] I/O ports at f400 [size=32] Memory at fbffc000 (32-bit, non-prefetchable) [size=2K] Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable- Capabilities: [70] Power Management version 3 Capabilities: [a8] SATA HBA <?> Capabilities: [b0] PCIe advanced features <?> Kernel driver in use: ahci 00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 06) Subsystem: Giga-byte Technology Device 5001 Flags: medium devsel, IRQ 3 Memory at fbffb000 (64-bit, non-prefetchable) [size=256] I/O ports at 0500 [size=32] Kernel modules: i2c-i801 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 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03) Subsystem: Giga-byte Technology Device e000 Flags: bus master, fast devsel, latency 0, IRQ 17 I/O ports at ee00 [size=256] Memory at fbeff000 (64-bit, prefetchable) [size=4K] Memory at fbef8000 (64-bit, prefetchable) [size=16K] [virtual] Expansion ROM at fbe00000 [disabled] [size=128K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- Capabilities: [70] Express Endpoint, MSI 01 Capabilities: [ac] MSI-X: Enable- Mask- TabSize=4 Capabilities: [cc] Vital Product Data <?> Capabilities: [100] Advanced Error Reporting <?> Capabilities: [140] Virtual Channel <?> Capabilities: [160] Device Serial Number 00-e0-4c-68-00-00-00-03 Kernel driver in use: r8169 Kernel modules: r8169 -- Lawrence -- 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
