Alan Stern wrote:
There's nothing obviously wrong here. You can try using the patch for Linux 2.6.4 below, which will print out information to the system log when certain key events occur. Also, you should make sure the log is echoed to your console so you don't lose anything when the system hangs. Set the console log level up very high.
I changed the console log level, and checked the output from 2.6.2 again. It prints more than I managed to get from dmesg before, so thought I better make the correction. On plugging in a usb device, before it hangs I actually get: drivers/usb/host/uhci-hcd.c: c400: 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
Using your patch with the 2.6.4 kernel I get: uhci irq status: 0x24 usb 1-1: new full speed USB device using address 2 uhci enqueue: ce1eb5a0 uhci fsbr enabled
While I'm here, I also found that the working boards we have (a 400MHz model) also run slowly when using the old uhci.c driver with the 2.4.18 kernel. Going to the 2.4.19 kernel, this driver runs fast. So I thought this might help me with the 600MHz board I'm having trouble with, since they have the same VIA VT82C686A chip. Can anyone tell me of any functional changes that occurred at that time? I don't know if it's related, but I'm looking into it anyway.
Thanks, Malcolm.
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