Tom Clark wrote:
Hi Dave, et al.,
I'm using this patch and while I've seen a little bit of improvement with
the VT6202, it still hangs fairly often while doing sustained mass storage
Pretty much as advertised, in short. Though as implied below, in
at least some cases there seem to be non-EHCI bugs mixed in: it's
not supposed be possible for usb-storage to deadlock itself.
Did you see that with a VT8235 too?
transactions. On the other hand, my NEC and Philips boards haven't hiccuped
once. I'm wondering if we should hold out hope that the VIA problems will
be resolved for those of us forced to use a 2.4.x kernel.
There's no particular 2.4 issue that I know of. I don't have a
reason to think the issue is even VIA-specific (or even specific
to the VT6202); all the failures could be explained by that
one elusive bug just showing up more often on VT6202. (I spent
some time looking at it yesterday and saw something new, but it
didn't seem to repeat.)
"We" always have hope, but of course if someone else donates
the resources to find and fix the problem, that'd be a help.
- Dave
Thanks,
-tc
on 2/1/03 11:04 AM, David Brownell at [EMAIL PROTECTED] wrote:
Jonathan Thorpe wrote:
Greetings,
As of late, we have been testing your latest patch to the 2.5.5x Kernel
and have found that in the preliminary testing, stability has improved
once again. ... Is there any chance of you being able to
backport your latest EHCI update to 2.4.x? This will allow us and
potentially many others to do more testing with your latest EHCI code,
especially with other fixes being applied to the 2.4.x series kernels of
late.
Here's something for 2.4 users to try. It syncs the driver with
the latest 2.5 stuff, which Linus hasn't yet picked up [1]. The
diff between versions is back to about 4K.
The key update in this patch is an important qh state machine fix.
In my testing, that removes hangs that I could reproduce on VIA and
Philips (much friendlier failures), without resort to sadism.
I suspect VT6202 users will still complain. (I just saw one test
deadlock in usb-storage; and at least one bug in the EHCI code
enjoys hide-and-seek too much.) And the VT8235 and "hdparm -tT"
numbers are still about half what they should be (on 2.4).
- Dave
[1] http://marc.theaimsgroup.com/?l=linux-usb-devel&m=104326655631544&w=2
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