On Tue, 3 Dec 2013, yoma sophian wrote:
> > This isn't a race condition, because the driver does not terminate
> > isochronous URBs before they are scheduled to end.
> >
> > For example, suppose there was an isochronous URB that was scheduled to
> > transmit packets during microframes 100, 180, 26
2013/12/2 Alan Stern :
> On Sun, 1 Dec 2013, yoma sophian wrote:
>
>> >> Suppose itds are submitted then ehci_work is triggered by bulk
>> >> interrupt and ehci->isoc_count >0.
>> >>
>> >> The race condition may happen if hardware hasn't handled those itds,
>> >> right?
>> >
>> > I don't know what
On Sun, 1 Dec 2013, yoma sophian wrote:
> >> Suppose itds are submitted then ehci_work is triggered by bulk
> >> interrupt and ehci->isoc_count >0.
> >>
> >> The race condition may happen if hardware hasn't handled those itds, right?
> >
> > I don't know what race condition you are talking about.
On Sun, 24 Nov 2013, yoma sophian wrote:
> >> My questions are:
> >> 1. in usb driver,
> >> ehci-sched.c --> itd_complete ->
> >>
> >>if (unlikely (t & ISO_ERRS)) {
> >> .. (case A)
> >>} else if (likely ((t & EHCI_ISOC_ACTIVE) == 0)) {
> >> .
2013/11/19 Alan Stern :
> Please use Reply-To-All so that your message gets sent to the mailing
> list as well as to me.
Sorry for forgetting that :)
>
> On Sat, 16 Nov 2013, yoma sophian wrote:
>
> hi alan:
>
>> My questions are:
>> 1. in usb driver,
>> ehci-sched.c --> itd_complete ->
>>
SORRY for send the wrong mail :)
2013/11/23 yoma sophian :
> 2013/11/19 Alan Stern :
>> Please use Reply-To-All so that your message gets sent to the mailing
>> list as well as to me.
>>
>> On Sat, 16 Nov 2013, yoma sophian wrote:
>>
>>> hi alan:
>>>
>>> > There are other examples in the log like
Please use Reply-To-All so that your message gets sent to the mailing
list as well as to me.
On Sat, 16 Nov 2013, yoma sophian wrote:
> hi alan:
>
> > There are other examples in the log like this one. To fix the problem
> > you could put more packets in each URB, or use more URBs, or eliminat
On Sat, 16 Nov 2013, yoma sophian wrote:
> hi all:
> When capturing audio through HS webcam by iso protocol under my
> embedded system, I can hear the audio is not continuous.
The problem is that sometimes the URBs don't get submitted soon enough.
> Then I check usb mon and i found sometime th
