Hi,
In brief: After resuming from S3 (Suspend-To-RAM), my USB hosts go very
bad.

Less short:
drivers/usb/host/uhci-hcd.c: b400: host system error, PCI problems?
drivers/usb/host/uhci-hcd.c: b400: host controller halted. very bad
drivers/usb/host/uhci-hcd.c: b400: host controller halted. very bad

Those messages appear in the logs after a successful S3 resume. The USB
mouse goes off and the HCDs work no more. Below is the lspci -v, attached
it the dmesg output. I'll be happy to provide more info.

-- 
Karol 'sziwan' Kozimor
sziwan@hell.org.pl

cat /proc/interrupts:
           CPU0
  0:     208978          XT-PIC  timer
  1:       7477          XT-PIC  keyboard
  2:          0          XT-PIC  cascade
  5:     142003          XT-PIC  Ricoh Co Ltd RL5c476 II, usb-uhci, radeon@PCI:1:0:0
  8:          2          XT-PIC  rtc
  9:        129          XT-PIC  acpi, eth0, usb-uhci, ohci1394
 11:     140676          XT-PIC  Ricoh Co Ltd RL5c476 II (#2), PCTel, Intel 82801CA-ICH3
 12:       2605          XT-PIC  PS/2 Mouse
 14:       9394          XT-PIC  ide0
 15:          8          XT-PIC  ide1
NMI:          0
ERR:          0

lspci -v:
00:00.0 Host bridge: Intel Corp. 82845 845 (Brookdale) Chipset Host Bridge (rev 04)
        Subsystem: Asustek Computer, Inc.: Unknown device 1626
        Flags: bus master, fast devsel, latency 0
        Memory at e0000000 (32-bit, prefetchable) [size=256M]
        Capabilities: [e4] #09 [d104]
        Capabilities: [a0] AGP version 2.0

00:01.0 PCI bridge: Intel Corp. 82845 845 (Brookdale) Chipset AGP Bridge (rev 04) (prog-if 00 [Normal decode])
        Flags: bus master, 66Mhz, fast devsel, latency 0
        Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
        I/O behind bridge: 0000d000-0000dfff
        Memory behind bridge: d7000000-d7efffff
        Prefetchable memory behind bridge: d7f00000-dfffffff

00:1d.0 USB Controller: Intel Corp. 82801CA/CAM USB (Hub #1) (rev 02) (prog-if 00 [UHCI])
        Subsystem: Asustek Computer, Inc.: Unknown device 1628
        Flags: bus master, medium devsel, latency 0, IRQ 5
        I/O ports at b800 [size=32]

00:1d.1 USB Controller: Intel Corp. 82801CA/CAM USB (Hub #2) (rev 02) (prog-if 00 [UHCI])
        Subsystem: Asustek Computer, Inc.: Unknown device 1628
        Flags: bus master, medium devsel, latency 0, IRQ 9
        I/O ports at b400 [size=32]

00:1e.0 PCI bridge: Intel Corp. 82801BAM/CAM PCI Bridge (rev 42) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=02, subordinate=02, sec-latency=32
        I/O behind bridge: 0000a000-0000afff
        Memory behind bridge: d6000000-d6ffffff

00:1f.0 ISA bridge: Intel Corp. 82801CAM ISA Bridge (LPC) (rev 02)
        Flags: bus master, medium devsel, latency 0

00:1f.1 IDE interface: Intel Corp. 82801CAM IDE U100 (rev 02) (prog-if 8a [Master SecP PriP])
        Subsystem: Asustek Computer, Inc.: Unknown device 1628
        Flags: bus master, medium devsel, latency 0, IRQ 9
        I/O ports at <ignored>
        I/O ports at <ignored>
        I/O ports at <ignored>
        I/O ports at <ignored>
        I/O ports at 8400 [size=16]
        Memory at d5800000 (32-bit, non-prefetchable) [size=1K]

00:1f.5 Multimedia audio controller: Intel Corp. 82801CA/CAM AC'97 Audio (rev 02)
        Subsystem: Asustek Computer, Inc.: Unknown device 1583
        Flags: bus master, medium devsel, latency 0, IRQ 11
        I/O ports at e000 [size=256]
        I/O ports at e100 [size=64]

00:1f.6 Modem: Intel Corp. 82801CA/CAM AC'97 Modem (rev 02) (prog-if 00 [Generic])
        Subsystem: Asustek Computer, Inc.: Unknown device 1496
        Flags: bus master, medium devsel, latency 0, IRQ 11
        I/O ports at e200 [size=256]
        I/O ports at e300 [size=128]

01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M7 LW [Radeon Mobility 7500] (prog-if 00 [VGA])
        Subsystem: Asustek Computer, Inc.: Unknown device 1622
        Flags: bus master, stepping, 66Mhz, medium devsel, latency 64, IRQ 5
        Memory at d8000000 (32-bit, prefetchable) [size=128M]
        I/O ports at d800 [size=256]
        Memory at d7000000 (32-bit, non-prefetchable) [size=64K]
        Expansion ROM at d7fe0000 [disabled] [size=128K]
        Capabilities: [58] AGP version 2.0
        Capabilities: [50] Power Management version 2

02:05.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
        Subsystem: Asustek Computer, Inc.: Unknown device 1045
        Flags: bus master, medium devsel, latency 32, IRQ 9
        I/O ports at a800 [size=256]
        Memory at d6800000 (32-bit, non-prefetchable) [size=256]
        Capabilities: [50] Power Management version 2

02:07.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev a8)
        Subsystem: Asustek Computer, Inc.: Unknown device 1624
        Flags: bus master, medium devsel, latency 168, IRQ 5
        Memory at 10000000 (32-bit, non-prefetchable) [size=4K]
        Bus: primary=02, secondary=02, subordinate=03, sec-latency=176
        I/O window 0: 00000000-00000003
        I/O window 1: 00000000-00000003
        16-bit legacy interface ports at 0001

02:07.1 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev a8)
        Subsystem: Asustek Computer, Inc.: Unknown device 1624
        Flags: bus master, medium devsel, latency 168, IRQ 11
        Memory at 10001000 (32-bit, non-prefetchable) [size=4K]
        Bus: primary=02, secondary=04, subordinate=07, sec-latency=176
        I/O window 0: 00000000-00000003
        I/O window 1: 00000000-00000003
        16-bit legacy interface ports at 0001

02:07.2 FireWire (IEEE 1394): Ricoh Co Ltd R5C552 IEEE 1394 Controller (prog-if 10 [OHCI])
        Subsystem: Asustek Computer, Inc.: Unknown device 1627
        Flags: bus master, medium devsel, latency 32, IRQ 9
        Memory at d6000000 (32-bit, non-prefetchable) [size=2K]
        Capabilities: [dc] Power Management version 2