**** Rafael R. Sevilla wrote:
RRS >Why are you trying to load the OHCI module? Does your system have an OHCI
RRS >USB controller? To the best of my knowledge, most commodity PC's only
RRS >have UHCI controllers, OHCI's being common only on Macs and a few notebook
RRS >pc's. Obviously trying to load this module when you have the other kind
RRS >of USB bridge will kill you.
Hi Rafael. When I upgraded my Red Hat distribution to Red Hat 7.0, which
included a kernel 2.2.16-22, at my next re-boot I was asked whether I
wanted to configure the new hardware found: namely the USB controller. I
said yes, and I found out later that the ohci module had been loaded. I am
not sure now whether this is indicating that my controller is a ohci type,
although the dmesg output that I include below indicates this.
Later on, I have tried to compile a kernel 2.4.1 with usb-ohci and
usb-uhci as modules, just because I was not sure yet about which one I was
going to use in the end.
Is there any way I can find out about my controller? I have a Toshiba
Laptop model 720 CDT, the laptop manual does not say anything else apart
from the fact that the computer has a USB port.
I report a part of my my `dmesg' log with kernel 2.4.1:
Linux version 2.4.1 ([EMAIL PROTECTED]) (gcc version 2.96
20000731 (Red Hat Linux 7.0)) #1 dom feb 18 15:15:53 GMT 2001
<snip>
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
usb-ohci.c: USB OHCI at membase 0xc301e000, IRQ 11
usb-ohci.c: usb-00:0b.0, NEC Corporation USB
usb.c: new USB bus registered, assigned bus number 1
usb.c: kmalloc IF c1c65200, numif 1
usb.c: new device strings: Mfr=0, Product=2, SerialNumber=1
usb.c: USB device number 1 default language ID 0x0
Product: USB OHCI Root Hub
SerialNumber: c301e000
hub.c: USB hub found
hub.c: 2 ports detected
hub.c: standalone hub
hub.c: ganged power switching
hub.c: individual port over-current protection
hub.c: power on to power good time: 510ms
hub.c: hub controller current requirement: 0mA
hub.c: port removable status: RR
hub.c: local power source is good
hub.c: no over-current condition exists
hub.c: enabling power on all ports
usb-ohci.c: OHCI Unrecoverable Error, controller usb-00:0b.0 disabled
usb.c: hub driver claimed interface c1c65200
usb.c: kusbd: /sbin/hotplug add 1
usb.c: kusbd policy returned 0xfffffffe
VFS: Disk change detected on device fd(2,0)
I have got this strange unrecoverable error reported above.
thanks a lot for your attention
Massimo
--
Massimo Pinto
Ph.D. student
Gray Laboratory Cancer Research Trust
http://www.graylab.ac.uk/usr/pinto
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