[linux-sh:03437] Re: a question

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi there

[email protected] wrote:
> Hello:My company used ST sh4.0 chip and st-linux as OS sytem for
testing stb7100. I am now testing USB devices. However,the screen
would't print
>    "
>
> eth1: register usbnet at usb-STB7100_ehci_bus-1.3, ASIX AX8817x USB
2.0 Ethernet
>   " when stick an USB ethernet card into USB devices.Also it would't print
>   "
>
> "input: USB HID v1.10 Keyboard [CHESEN PS2 to USB Converter] on
usb-STB7100_ehci_bus-1.4 "
>
> " message while stick a USB keyboard according to st_linux website.
Can you tell me how to show these message upon
>
> stick an USB device ? If not,can you show me how to prove the USB
device have been plug in and can transmit data with host by console.

I think the key part of the trace is this:

> ST40-ohci ST40-ohci1: new USB bus registered, assigned bus number 2
> hub 1-0:1.0: over-current change on port 1
> hub 2-0:1.0: USB hub found
> hub 2-0:1.0: 1 port detected

It looks like the USB hub has detected an over current condition.
This may be real, but its more likely that you're hitting an
incompatibility between the silicon revision you're using the and the
kernel version. STx7100 chips before 3.1 had the state of the USB over
current pin inverted, so the kernel had a work around to disable this.
This needed to be removed for later versions.

You don't say which version of the silicon or kernel you're running,
so its hard to know where the problem is. But in general first try
upgrading to the latest kernel from www.stlinux.com and try again.

Note that [email protected] does not exist. If you want to submit a
bug report via bugzilla you need to use the web site: bugzilla.stlinux.com.

Hope this helps

Stuart
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.1 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFETLVC61BlSKQGbXkRAgN2AJ96VUHoiAePUSYxQPAPyrZfQb95QQCdGQ4g
cBhR/kXxO42uOE99Ndrm9j8=
=HEUv
-----END PGP SIGNATURE-----