Hi,
I reported an oops / kernel panic in usb-ohci/rh_send_irq with a
bogus pointer to an OHCI controller in early May. This happens within
a couple of dyas of loading the usb-ohci module. Without the module
loaded my machine runs without problems.
I noticed the report from Miles Lane ( 2.4.0-test1-ac18 -- OOPS in
usb-ohci when suspending machine) showing the same oops dump when
suspending the machine.
I applied David's ohci-paranoid patch to 2.4.0-test1-ac11 and trapped
a bogus address message 48 hours latter. The was no oops, the system
continues to run and USB is still functioning normally.
usb-ohci.c: USB OHCI at membase 0xd2892000, IRQ 9
usb-ohci.c: Advanced Micro Devices [AMD] AMD-756 [Viper] USB
usb.c: new USB bus registered, assigned bus number 1
usb.c: USB new device connect, assigned device number 1
hub.c: USB hub found
hub.c: 4 ports detected
usb.c: USB new device connect, assigned device number 2
usb.c: USB device descriptor short read (expected 18, got 0)
usb.c: USB disconnect on device -1
usb.c: USB new device connect, assigned device number 2
usb.c: This device is not recognized by any installed USB driver.
usb.c: registered new driver wacom
mouse0: PS/2 mouse device for input0
input0: Wacom Intuos 6x8 on usb1:2.0
usb-ohci.c: rh_send_irq given bogus controller address d2892000
The membase and bogus addresses are equal and rh_send_irq worked
correctly the next time it was called. This suggests to me that maybe
the readl returned bad data from the controller on this one occasion.
I am not running APM or APCI and power management is disabled in the
BIOS. The machine has an Athlon processor on a MSI K7 Pro m/b.
I hope this provides another data point to help track down this
problem. It looks like the patch provides a way to avoid the oops and
continue running normally. I'm happy to provide further information
and run patches.
David
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David Nash - [EMAIL PROTECTED]
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