the short packet.
Otherwise we could have the case where multiple URBs are queued for a
bulk endpoint, a short packet stops the endpoint ring, the xHCI driver
never restarts the endpoint ring running, and then the queued URBs just
sit on the endpoint ring.
Sarah Sharp
--
gt; No, the cancellation doesn't come too late. Rather, the endpoint queue
> did not get stopped as it should when the EREMOTEIO error occurred.
Why would the xHCI endpoint queue get stopped after an EREMOTEIO error?
The upper layers never clear a halt on a short bulk packet, so the xHCI
the completion
> handler (for the URB that got the short packet) returns. Doing it
> earlier is a bug.
Ok, let me take a look at that xHCI ring code and see if I can come up
with a patch. I think if I let the completion handler run first, it
should queue any cancellations for th
mat that would make it hard to share code with lsusb?
> [1] https://sourceforge.net/apps/trac/libusbx/roadmap
> [2]
> https://sourceforge.net/mailarchive/forum.php?thread_name=4FCCA5E3.8080101%40akeo.ie&forum_name=libusbx-devel
Sarah Sharp
---
en source devices. You should contact Greg KH to get the
approval process rolling.
Sarah Sharp
--
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has c
maybe?..)?
Let's try with the NEC host controller, since that's a bit more stable
than the Fresco Logic host.
Can you try running with my for-usb-linus branch? I just fixed a bug
related to successive stalls corrupting the software ring state.
Send me the dmesg with xHCI debugging
two during
> certain operations. I haven't seen it before, with other kernels.
The 3.5 kernel added USB 3.0 Link Power Management. It's turned for all
USB 3.0 devices.
What do you mean by "hang"? As in userspace hangs? khubd hangs?
Sarah Sharp
--
point was actually halted due to a stall, babble,
transfer error, etc. It won't reset the endpoint toggles or sequence
number at arbitrary points, so we can't reset the endpoint after a new
alternate interface setting is installed.
Sarah Sharp
---
e time to work on this patch, so please take a
stab at it if you have some time.
The cancellation code might need some work to handle multi-TRB data
phases as well, but we shouldn't worry about that until we see if this
work-around helps the AsMedia host.
Sarah Sharp
> On Tue, Oct 2,
; > Correct run: http://pastebin.com/Nh487CXn
> >> > Second run(error): http://pastebin.com/RrcS3f70
> >> > Kernel log from the whole time: http://pastebin.com/gL002CrS
I note that after several untransferred bytes, the driver attempts
at's the problem then. Some cameras may need the clear halt
request, and the xHCI won't send it because the endpoints aren't halted.
Fixing this is on my todo list, but not very high right now.
Sarah Sharp
> The second call then fails to send the bulk transfers at all, just like
On Sat, Mar 09, 2013 at 09:16:53PM +0100, Marcus Meissner wrote:
> On Thu, Feb 28, 2013 at 09:32:05AM -0800, Sarah Sharp wrote:
> > On Thu, Feb 28, 2013 at 04:59:36PM +0100, Marcus Meissner wrote:
> > > Hi,
> > >
> > > Something must happen after the
On Wed, Mar 13, 2013 at 01:37:35PM +0800, Xiaofan Chen wrote:
> On Tue, Mar 12, 2013 at 2:10 PM, Marcus Meissner wrote:
> > On Mon, Mar 11, 2013 at 03:30:19PM -0700, Sarah Sharp wrote:
> >> On Sat, Mar 09, 2013 at 09:16:53PM +0100, Marcus Meissner wrote:
> >> > On T
u try the test again with the two patches?
Hi Yuliya,
You ran into this issue as well, back in Oct 2012. You added a set
interface to your driver to work around the issue. If you're still
working on that code, can you take the set interface out, test these two
patches, and let me know if you
7;s not needed,
but I want to double check that the code still works without it.
Thanks,
Sarah Sharp
> On Thu, Oct 10, 2013 at 02:43:49PM -0700, Sarah Sharp wrote:
> > Hi Sipter and Marcus,
> >
> > Xenia has a potential fix for a long-standing bug in the xHCI driver,
>
not
sure where you got that value. Each xHCI host can indicate the max
primary stream array size (basically the number of streams) it supports,
see MaxPSASize in section 5.3.6 of the xHCI spec. An xHCI host can
choose to indicate it doesn't support streams at all, by setting that
value to zero
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