Bug#677472: [3.1->3.2 regression] Immediate wake on suspend, associated with OHCI on MCP51
On Sun, 08 Jul 2012 07:40:49 -0700, Alan Stern <stern@rowland.harvard.edu>
wrote:
On Sat, 7 Jul 2012, Octavio Alvarez wrote:
On Sat, 07 Jul 2012 19:23:08 -0700, Alan Stern
<stern@rowland.harvard.edu>
wrote:
>> roothub.portstatus [4] 0x00000303 LSDA PPS PES CCS
>> roothub.portstatus [5] 0x00000303 LSDA PPS PES CCS
>> roothub.portstatus [6] 0x00000101 PPS CCS
>
> That's normal, except for the status of port 6 (which actually is port
> 7, since we normally count ports starting from 1). The port shows
> Current Connect Status, so something is connected to it -- but what?
It looks like it was my pendrive. Disconnecting the mouse and keyboard
cleared CCS on [4] and [5] (not necesariliy in that order).
Removing my pen drive cleared CCS on [6].
Okay, that explains that. More or less. Is this an old USB-1.1 pen
drive? If it is USB-2.0 then I would expect it to connect to the EHCI
controller, not the OHCI controller.
I don't know... Is there a way to know that? The device is a
Bus 001 Device 011: ID 0781:5406 SanDisk Corp. Cruzer Micro U3
Does it make sense to think that some ports are OHCI and some are
EHCI, particularly if some of them are on the back and some on the
front?
This is the continuation of the previous dmesg, starting on second 178,
when I pressed the power button.
(done without my pen drive)
The suspending part is normal. The resuming part is not...
[ 181.394398] usb usb2: usb resume
[ 181.394403] ohci_hcd 0000:00:0b.0: wakeup root hub
[ 181.394426] usb usb1: usb resume
[ 181.394430] ehci_hcd 0000:00:0b.1: resume root hub
[ 181.428035] ehci_hcd 0000:00:0b.1: port 6 low speed --> companion
That shouldn't have happened. It's not actually _wrong_, but it
indicates that the USB controllers did not maintain their states
properly while the system was suspended.
Considering that this happens while the system is already resuming,
do you think is in some way related with the bug?
[ 181.472105] hub 2-0:1.0: port 6: status 0301 change 0003
[ 181.524028] ehci_hcd 0000:00:0b.1: GetStatus port:6 status 003402 0
ACK POWER OWNER sig=k CSC
[ 181.540030] hub 1-0:1.0: hub_resume
[ 181.540040] ehci_hcd 0000:00:0b.1: GetStatus port:1 status 001020 0
ACK POWER sig=se0 OCC
[ 181.540051] ehci_hcd 0000:00:0b.1: GetStatus port:2 status 001020 0
ACK POWER sig=se0 OCC
[ 181.540061] ehci_hcd 0000:00:0b.1: GetStatus port:3 status 001020 0
ACK POWER sig=se0 OCC
[ 181.540071] ehci_hcd 0000:00:0b.1: GetStatus port:4 status 001020 0
ACK POWER sig=se0 OCC
[ 181.540086] ehci_hcd 0000:00:0b.1: GetStatus port:7 status 001020 0
ACK POWER sig=se0 OCC
[ 181.540095] ehci_hcd 0000:00:0b.1: GetStatus port:8 status 001020 0
ACK POWER sig=se0 OCC
These messages are highly suspicious. They indicate a low-level
hardware problem in the wiring of the USB controllers or support
components.
I won't go into further detail. The remaining events all seem to flow
from these underlying problems.
Just out of curiosity, what happens if you suspend with the mouse and
keyboard unplugged, i.e., no USB devices attached at all? (To
forestall possible questions, you run a little shell script that sleeps
for 10 seconds, during which you unplug the keyboard and mouse, and
then initiates a system suspend.)
I'm using the power button to suspend and resume, so this test is
actually easy.
It's weird, but without K & M connected, even with the pendrive
connected, the system suspends! (The keyboard leds go off and all,
though)
Also, what happens if you unload ehci-hcd before suspending (with the
keyboard and mouse plugged in as normal)?
It doesn't suspend. I tested this a while ago. It's pretty much specific
to ohci_hcd.
Not sure if this is helpful but:
[Sun Jul 08 10:02:31 -0700 -- alvarezp@octavio:~]
$ sudo lsusb -vvvv
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0002 2.0 root hub
bcdDevice 3.02
iManufacturer 3 Linux 3.2.0-3-686-pae ehci_hcd
iProduct 2 EHCI Host Controller
iSerial 1 0000:00:0b.1
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 12
Hub Descriptor:
bLength 11
bDescriptorType 41
nNbrPorts 8
wHubCharacteristic 0x000a
No power switching (usb 1.0)
Per-port overcurrent protection
bPwrOn2PwrGood 10 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00 0x00
PortPwrCtrlMask 0xff 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0100 power
Port 3: 0000.0100 power
Port 4: 0000.0100 power
Port 5: 0000.0100 power
Port 6: 0000.0100 power
Port 7: 0000.0100 power
Port 8: 0000.0503 highspeed power enable connect
Device Status: 0x0001
Self Powered
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0001 1.1 root hub
bcdDevice 3.02
iManufacturer 3 Linux 3.2.0-3-686-pae ohci_hcd
iProduct 2 OHCI Host Controller
iSerial 1 0000:00:0b.0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0002 1x 2 bytes
bInterval 255
Hub Descriptor:
bLength 11
bDescriptorType 41
nNbrPorts 8
wHubCharacteristic 0x0002
No power switching (usb 1.0)
Ganged overcurrent protection
bPwrOn2PwrGood 1 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00 0x00
PortPwrCtrlMask 0xff 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0100 power
Port 3: 0000.0100 power
Port 4: 0000.0100 power
Port 5: 0000.0303 lowspeed power enable connect
Port 6: 0000.0303 lowspeed power enable connect
Port 7: 0000.0100 power
Port 8: 0000.0100 power
Device Status: 0x0001
Self Powered
Bus 002 Device 009: ID 046d:c05a Logitech, Inc. Optical Mouse M90
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x046d Logitech, Inc.
idProduct 0xc05a Optical Mouse M90
bcdDevice 54.00
iManufacturer 1 Logitech
iProduct 2 USB Optical Mouse
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 34
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 98mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 2 Mouse
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.11
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 67
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0006 1x 6 bytes
bInterval 10
Device Status: 0x0000
(Bus Powered)
Bus 002 Device 010: ID 046d:c31d Logitech, Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x046d Logitech, Inc.
idProduct 0xc31d
bcdDevice 66.00
iManufacturer 1 Logitech
iProduct 2 USB Keyboard
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 59
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 3 U66.00_B0001
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 90mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 1 Keyboard
iInterface 2 USB Keyboard
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.10
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 65
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 10
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0 No Subclass
bInterfaceProtocol 0 None
iInterface 2 USB Keyboard
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.10
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 159
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 255
Device Status: 0x0000
(Bus Powered)
Bus 001 Device 011: ID 0781:5406 SanDisk Corp. Cruzer Micro U3
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x0781 SanDisk Corp.
idProduct 0x5406 Cruzer Micro U3
bcdDevice 0.10
iManufacturer 1 SanDisk
iProduct 2 U3 Cruzer Micro
iSerial 3 0000186265743522
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 200mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk-Only
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
--
Octavio.
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