USB broken in 2.6.5rc2

From: Andreas Hartmann
Date: Sat Mar 27 2004 - 04:20:42 EST

Hello all,

The following problem occures not in kernel 2.6.4!


I'm starting USB by loading the module uhci_hcd and usb_storage:

Mar 27 10:04:02 athlon kernel: drivers/usb/core/usb.c: registered new driver usbfs
Mar 27 10:04:02 athlon kernel: drivers/usb/core/usb.c: registered new driver hub
Mar 27 10:04:02 athlon kernel: USB Universal Host Controller Interface driver v2.2
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.0: VIA Technologies, Inc. USB
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.0: irq 21, io base 0000d800
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.0: new USB bus registered, assigned bus number 1
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.0: detected 2 ports
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.0: root hub device address 1
Mar 27 10:04:02 athlon kernel: usb usb1: new device strings: Mfr=3, Product=2, SerialNumber=1
Mar 27 10:04:02 athlon kernel: drivers/usb/core/message.c: USB device number 1 default language ID 0x409
Mar 27 10:04:02 athlon kernel: usb usb1: Product: VIA Technologies, Inc. USB
Mar 27 10:04:02 athlon kernel: usb usb1: Manufacturer: Linux 2.6.5-rc2 uhci_hcd
Mar 27 10:04:02 athlon kernel: usb usb1: SerialNumber: 0000:00:10.0
Mar 27 10:04:02 athlon kernel: drivers/usb/core/usb.c: usb_hotplug
Mar 27 10:04:02 athlon kernel: usb usb1: registering 1-0:1.0 (config #1, interface 0)
Mar 27 10:04:02 athlon kernel: drivers/usb/core/usb.c: usb_hotplug
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: usb_probe_interface
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: usb_probe_interface - got id
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: USB hub found
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: 2 ports detected
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: standalone hub
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: unknown reserved power switching mode
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: individual port over-current protection
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: Port indicators are not supported
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: power on to power good time: 2ms
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: hub controller current requirement: 0mA
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: local power source is good
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: no over-current condition exists
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: enabling power on all ports
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.1: VIA Technologies, Inc. USB (#2)
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.1: irq 21, io base 0000dc00
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.1: new USB bus registered, assigned bus number 2
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.1: detected 2 ports
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.1: root hub device address 1
Mar 27 10:04:02 athlon kernel: usb usb2: new device strings: Mfr=3, Product=2, SerialNumber=1
Mar 27 10:04:02 athlon kernel: drivers/usb/core/message.c: USB device number 1 default language ID 0x409
Mar 27 10:04:02 athlon kernel: usb usb2: Product: VIA Technologies, Inc. USB (#2)
Mar 27 10:04:02 athlon kernel: usb usb2: Manufacturer: Linux 2.6.5-rc2 uhci_hcd
Mar 27 10:04:02 athlon kernel: usb usb2: SerialNumber: 0000:00:10.1
Mar 27 10:04:02 athlon kernel: drivers/usb/core/usb.c: usb_hotplug
Mar 27 10:04:02 athlon kernel: usb usb2: registering 2-0:1.0 (config #1, interface 0)
Mar 27 10:04:02 athlon kernel: drivers/usb/core/usb.c: usb_hotplug
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: usb_probe_interface
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: usb_probe_interface - got id
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: USB hub found
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: 2 ports detected
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: standalone hub
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: unknown reserved power switching mode
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: individual port over-current protection
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: Port indicators are not supported
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: power on to power good time: 2ms
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: hub controller current requirement: 0mA
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: local power source is good
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: no over-current condition exists
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: enabling power on all ports
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.2: VIA Technologies, Inc. USB (#3)
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.2: irq 21, io base 0000e000
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.2: new USB bus registered, assigned bus number 3
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.2: detected 2 ports
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.2: root hub device address 1
Mar 27 10:04:02 athlon kernel: usb usb3: new device strings: Mfr=3, Product=2, SerialNumber=1
Mar 27 10:04:02 athlon kernel: drivers/usb/core/message.c: USB device number 1 default language ID 0x409
Mar 27 10:04:02 athlon kernel: usb usb3: Product: VIA Technologies, Inc. USB (#3)
Mar 27 10:04:02 athlon kernel: usb usb3: Manufacturer: Linux 2.6.5-rc2 uhci_hcd
Mar 27 10:04:02 athlon kernel: usb usb3: SerialNumber: 0000:00:10.2
Mar 27 10:04:02 athlon kernel: drivers/usb/core/usb.c: usb_hotplug
Mar 27 10:04:02 athlon kernel: usb usb3: registering 3-0:1.0 (config #1, interface 0)
Mar 27 10:04:02 athlon kernel: drivers/usb/core/usb.c: usb_hotplug
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: usb_probe_interface
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: usb_probe_interface - got id
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: USB hub found
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: 2 ports detected
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: standalone hub
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: unknown reserved power switching mode
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: individual port over-current protection
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: Port indicators are not supported
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: power on to power good time: 2ms
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: hub controller current requirement: 0mA
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: local power source is good
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: no over-current condition exists
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: enabling power on all ports
Mar 27 10:04:02 athlon kernel: Initializing USB Mass Storage driver...
Mar 27 10:04:02 athlon kernel: drivers/usb/core/usb.c: registered new driver usb-storage
Mar 27 10:04:02 athlon kernel: USB Mass Storage support registered.
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.0: port 1 portsc 008a
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: port 1, status 100, change 3, 12 Mb/s
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.0: port 2 portsc 008a
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: port 2, status 100, change 3, 12 Mb/s
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.1: port 1 portsc 008a
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: port 1, status 100, change 3, 12 Mb/s
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.1: port 2 portsc 018a
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: port 2, status 300, change 3, 1.5 Mb/s
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.2: port 1 portsc 008a
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: port 1, status 100, change 3, 12 Mb/s
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.2: port 2 portsc 018a
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: port 2, status 300, change 3, 1.5 Mb/s
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.0: port 1 portsc 0088
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: port 1 enable change, status 100
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.0: port 2 portsc 0088
Mar 27 10:04:02 athlon kernel: hub 1-0:1.0: port 2 enable change, status 100
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.1: port 1 portsc 0088
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: port 1 enable change, status 100
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.1: port 2 portsc 0188
Mar 27 10:04:02 athlon kernel: hub 2-0:1.0: port 2 enable change, status 300
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.2: port 1 portsc 0088
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: port 1 enable change, status 100
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.2: port 2 portsc 0188
Mar 27 10:04:02 athlon kernel: hub 3-0:1.0: port 2 enable change, status 300
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.0: suspend_hc
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.1: suspend_hc
Mar 27 10:04:02 athlon kernel: uhci_hcd 0000:00:10.2: suspend_hc


Now, I'm connecting a USB-Device:

Mar 27 10:04:26 athlon kernel: uhci_hcd 0000:00:10.1: wakeup_hc
Mar 27 10:04:26 athlon kernel: uhci_hcd 0000:00:10.1: port 1 portsc 0093
Mar 27 10:04:26 athlon kernel: hub 2-0:1.0: port 1, status 101, change 1, 12 Mb/s
Mar 27 10:04:26 athlon kernel: hub 2-0:1.0: debounce: port 1: delay 100ms stable 4 status 0x101
Mar 27 10:04:26 athlon kernel: usb 2-1: new full speed USB device using address 3
Mar 27 10:04:26 athlon kernel: usb 2-1: new device strings: Mfr=1, Product=2, SerialNumber=0
Mar 27 10:04:26 athlon kernel: drivers/usb/core/message.c: USB device number 3 default language ID 0x409
Mar 27 10:04:26 athlon kernel: usb 2-1: Product: PENTAX OPTIO S4
Mar 27 10:04:26 athlon kernel: usb 2-1: Manufacturer: PENTAX
Mar 27 10:04:26 athlon kernel: drivers/usb/core/usb.c: usb_hotplug
Mar 27 10:04:26 athlon kernel: usb 2-1: registering 2-1:1.0 (config #1, interface 0)
Mar 27 10:04:26 athlon kernel: drivers/usb/core/usb.c: usb_hotplug
Mar 27 10:04:26 athlon kernel: usb-storage 2-1:1.0: usb_probe_interface
Mar 27 10:04:26 athlon kernel: usb-storage 2-1:1.0: usb_probe_interface - got id
Mar 27 10:04:26 athlon kernel: scsi1 : SCSI emulation for USB Mass Storage devices
Mar 27 10:04:26 athlon kernel: Vendor: Pentax Model: Optio S/S4 Rev: 1000
Mar 27 10:04:26 athlon kernel: Type: Direct-Access ANSI SCSI revision: 02
Mar 27 10:04:26 athlon kernel: USB Mass Storage device found at 3


I'm accessing some datas on the device, unmount it and disconnect it again.

Mar 27 10:04:41 athlon kernel: SCSI device sda: 22144 512-byte hdwr sectors (11 MB)
Mar 27 10:04:41 athlon kernel: sda: assuming Write Enabled
Mar 27 10:04:41 athlon kernel: sda: assuming drive cache: write through
Mar 27 10:04:41 athlon kernel: sda: sda1
Mar 27 10:04:41 athlon kernel: Attached scsi removable disk sda at scsi1, channel 0, id 0, lun 0


Mar 27 10:05:05 athlon kernel: uhci_hcd 0000:00:10.1: port 1 portsc 008a
Mar 27 10:05:05 athlon kernel: hub 2-0:1.0: port 1, status 100, change 3, 12 Mb/s
Mar 27 10:05:05 athlon kernel: usb 2-1: USB disconnect, address 3
Mar 27 10:05:05 athlon kernel: usb 2-1: usb_disable_device nuking all URBs
Mar 27 10:05:05 athlon kernel: usb 2-1: unregistering interface 2-1:1.0
Mar 27 10:05:05 athlon kernel: drivers/usb/core/usb.c: usb_hotplug
Mar 27 10:05:06 athlon kernel: uhci_hcd 0000:00:10.1: suspend_hc


Afterwards, I plugged in the device again - but the kernel doesn't
recognize it.

Mar 27 10:05:13 athlon kernel: uhci_hcd 0000:00:10.1: wakeup_hc


To do a "soft reboot", I unload all modules regarding usb. All works fine
- but I cannot remove uhci_hcd. The command never comes back. At this
state, the following modules are loaded:

ext2 45700 1
snd_pcm_oss 49956 0
snd_mixer_oss 17920 1 snd_pcm_oss
snd_via82xx 22144 0
snd_pcm 86692 2 snd_pcm_oss,snd_via82xx
snd_timer 22468 1 snd_pcm
snd_ac97_codec 61380 1 snd_via82xx
snd_page_alloc 9092 2 snd_via82xx,snd_pcm
snd_mpu401_uart 6144 1 snd_via82xx
snd_rawmidi 20960 1 snd_mpu401_uart
snd_seq_device 6792 1 snd_rawmidi
snd 47268 9
snd_pcm_oss,snd_mixer_oss,snd_via82xx,snd_pcm,snd_timer,snd_ac97_codec,snd_mpu401_uart,snd_rawmidi,snd_seq_device
soundcore 7328 1 snd
r128 95472 28
agpgart 26728 0
eepro100 26892 0
sis900 17156 0
8250 18528 0
serial_core 20416 1 8250
uhci_hcd 29904 0
usbcore 93532 3 uhci_hcd
lp 8324 0
ide_cd 37892 0
cdrom 38688 1 ide_cd
dm_mod 38624 6
unix 23728 266


My only chance to get it working again is a reboot.

This problem does not happen, if the device isn't mounted. Will say: If you just plug it in and plug it out again, the device is recognized again when plugged in again.


Kind regards,
Andreas Hartmann
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