Hi Alan,
On 3/4/2013 23:16, Alan Stern wrote:
On Mon, 4 Mar 2013, Bo Shen wrote:
Hi Alan,
On 02/26/2013 04:54 AM, Alan Stern wrote:
Sarah (and anyone else who's interested):
A while ago I wrote about a hardware bug in my Intel ICH5 and ICH8 EHCI
controllers. You pointed out that these are rather old components, not
being used in current systems, which is quite true.
I test this on Atmel at91sam9x5ek board with Linux-3.8. And get the
similar information. So please indicate me more detail information about
the bug. (Sorry for not catch the hardware bug e-mail)
The problem is explained in more detail here:
http://marc.info/?l=linux-usb&m=135492071812265&w=2
Note that the test program itself requires a small fix, which was
posted here:
http://marc.info/?l=linux-usb&m=136226443502631&w=2
Thanks.
If you don't mind, I'd like to see the kernel log from your test run.
The dmesg log information as following:
root@at91sam9x5ek:~# ./ehci-test /dev/bus/usb/001/003
atmel-ehci 700000.ehci: EHCI hardware bug detected: 82008d80 00008d00
atmel-ehci 700000.ehci: EHCI hardware bug detected: 02008d80 80008d00
atmel-ehci 700000.ehci: EHCI hardware bug detected: 02008d80 80008d00
atmel-ehci 700000.ehci: EHCI hardware bug detected: 82008d80 00008d00
atmel-ehci 700000.ehci: EHCI hardware bug detected: 82008d80 00008d00
atmel-ehci 700000.ehci: EHCI hardware bug detected: 02008d80 80008d00
atmel-ehci 700000.ehci: EHCI hardware bug detected: 82008d80 00008d00
atmel-ehci 700000.ehci: EHCI hardware bug detected: 02008d80 80008d00
atmel-ehci 700000.ehci: EHCI hardware bug detected: 82008d80 00009d00
Best Regards,
Bo Shen
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