[BUG] 2.6.15-rc4-git1 ehci suspend regression

[Patrizio Bassi <patrizio.bassi@gmail.com>]

Yesterday i wrote i got all my suspend problems fixed in -rc3.

i tried -rc4-git1 and got another problem after suspend.

on resume, i can use no more che ehci device (pci usb card).
on -rc3, after resume hotplug could reload device driver, while with rc4
device is no more found, neither after unplug/replug.

infact lsusb shows:
Bus 004 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 001: ID 0000:0000

i have to reboot (usb are built-in)
and i can get:

Bus 004 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 004: ID 0915:8000 GlobeSpan, Inc.
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 001: ID 0000:0000


this is a rc4 regression, i saw Greg posted some patches...

this is the dmesg:


Stopping tasks: ===================|
Freeing memory... done (4076 pages freed)
ACPI: PCI interrupt for device 0000:00:0d.0 disabled
ACPI: PCI interrupt for device 0000:00:0a.2 disabled
ACPI: PCI interrupt for device 0000:00:0a.1 disabled
ACPI: PCI interrupt for device 0000:00:0a.0 disabled
ACPI: PCI interrupt for device 0000:00:09.0 disabled
ACPI: PCI interrupt for device 0000:00:04.2 disabled
swsusp: Need to copy 7852 pages
ACPI: PCI Interrupt 0000:00:04.2[D] -> Link [LNKD] -> GSI 9 (level, low)
-> IRQ 9
ACPI: PCI Interrupt 0000:00:09.0[A] -> Link [LNKD] -> GSI 9 (level, low)
-> IRQ 9
ACPI: PCI Interrupt 0000:00:09.0[A] -> Link [LNKD] -> GSI 9 (level, low)
-> IRQ 9
eth0: Setting promiscuous mode.
ACPI: PCI Interrupt 0000:00:0a.0[A] -> Link [LNKC] -> GSI 5 (level, low)
-> IRQ 5
ACPI: PCI Interrupt 0000:00:0a.1[B] -> Link [LNKD] -> GSI 9 (level, low)
-> IRQ 9
ACPI: PCI Interrupt 0000:00:0a.2[C] -> Link [LNKA] -> GSI 11 (level,
low) -> IRQ 11
ehci_hcd 0000:00:0a.2: USB 2.0 started, EHCI 0.95, driver 10 Dec 2004
ACPI: PCI Interrupt 0000:00:0b.0[A] -> Link [LNKB] -> GSI 10 (level,
low) -> IRQ 10
ACPI: PCI Interrupt 0000:00:0d.0[A] -> Link [LNKD] -> GSI 9 (level, low)
-> IRQ 9
ACPI: PCI Interrupt 0000:00:0d.0[A] -> Link [LNKD] -> GSI 9 (level, low)
-> IRQ 9
eth1: Setting promiscuous mode.
Restarting tasks... done
usb 2-2: new full speed USB device using uhci_hcd and address 3
usb 2-2: device descriptor read/64, error -71
usb 2-2: device descriptor read/64, error -71
usb 2-2: new full speed USB device using uhci_hcd and address 4
usb 2-2: device descriptor read/64, error -71
usb 2-2: device descriptor read/64, error -71
usb 2-2: new full speed USB device using uhci_hcd and address 5
usb 2-2: device not accepting address 5, error -71
usb 2-2: new full speed USB device using uhci_hcd and address 6
usb 2-2: device not accepting address 6, error -71
usb 2-2: new full speed USB device using uhci_hcd and address 7
usb 2-2: device descriptor read/64, error -71
usb 2-2: device descriptor read/64, error -71
usb 2-2: new full speed USB device using uhci_hcd and address 8
usb 2-2: device descriptor read/64, error -71
usb 2-2: device descriptor read/64, error -71
usb 2-2: new full speed USB device using uhci_hcd and address 9
usb 2-2: device not accepting address 9, error -71
usb 2-2: new full speed USB device using uhci_hcd and address 10
usb 2-2: device not accepting address 10, error -71

lspci
00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host
bridge (rev 03)
00:01.0 PCI bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX AGP
bridge (rev 03)
00:04.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 02)
00:04.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)
00:04.2 USB Controller: Intel Corporation 82371AB/EB/MB PIIX4 USB (rev 01)
00:04.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 02)
00:09.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone]
(rev 30)
00:0a.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 50)
00:0a.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 50)
00:0a.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 51)
00:0b.0 Multimedia audio controller: Ensoniq ES1370 [AudioPCI] (rev 01)
00:0d.0 Ethernet controller: 3Com Corporation 3c905C-TX/TX-M [Tornado]
(rev 74)
01:00.0 VGA compatible controller: ATI Technologies Inc Rage 128 RF/SG AGP


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