Re: [linux-usb-devel] [BUG] Still having problems with an USB Drive

["Rogério Brito" <rbrito@ime.usp.br>]

On Nov 13 2003, Rogério Brito wrote:
> For the time being, I put new files at http://www.ime.usp.br/~rbrito/usb
> for the situation without any USB devices plugged after a warm boot. I
> hope that they're more helpful than the files I posted before.

Well, I just tried plugging the drive into one of the ports that come
right from the motherboard and the diff relative to what I saw earlier
is the following:

--- /root/dmesg-no-devices-plugged.txt	2003-11-13 20:58:06.000000000 -0200
+++ dmesg-drive-plugged-unplugged-plugged.txt	2003-11-13 21:41:37.000000000 -0200
@@ -228,3 +228,30 @@
 ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
 ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
 drivers/usb/host/uhci-hcd.c: d400: suspend_hc
+drivers/usb/host/uhci-hcd.c: d400: wakeup_hc
+hub 1-0:1.0: port 1, status 101, change 1, 12 Mb/s
+hub 1-0:1.0: debounce: port 1: delay 100ms stable 4 status 0x101
+hub 1-0:1.0: new USB device on port 1, assigned address 2
+usb 1-1: new device strings: Mfr=1, Product=3, SerialNumber=0
+drivers/usb/core/message.c: USB device number 2 default language ID 0x409
+usb 1-1: Product: USB Embedded Hub
+usb 1-1: Manufacturer: Leading Driver Co.,LTD.
+drivers/usb/core/usb.c: usb_hotplug
+usb 1-1: registering 1-1:1.0 (config #1, interface 0)
+drivers/usb/core/usb.c: usb_hotplug
+hub 1-1:1.0: usb_probe_interface
+hub 1-1:1.0: usb_probe_interface - got id
+hub 1-1:1.0: USB hub found
+hub 1-1:1.0: 2 ports detected
+hub 1-1:1.0: compound device; port removable status: FF
+hub 1-1:1.0: individual port power switching
+hub 1-1:1.0: individual port over-current protection
+hub 1-1:1.0: Port indicators are not supported
+hub 1-1:1.0: power on to power good time: 100ms
+hub 1-1:1.0: hub controller current requirement: 100mA
+hub 1-1:1.0: local power source is lost (inactive)
+hub 1-1:1.0: no over-current condition exists
+hub 1-1:1.0: enabling power on all ports
+hub 1-1:1.0: port 1, status 101, change 1, 12 Mb/s
+hub 1-1:1.0: transfer --> -75
+usb 1-1: control timeout on ep0in
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

So, it seems that my drive indeed has an embedded hub in it. After the
lines above, my khubd thread enters the D state.

If I try to issue a "cat /proc/bus/usb/devices" command, it hangs. BTW,
I just received another line saying control timeout on ep0in. :-(

Is there anything else that I can do?


Thank you very much for your attention, Rogério Brito.

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  Rogério Brito - rbrito@ime.usp.br - http://www.ime.usp.br/~rbrito
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