PROBLEM: USB isochronous urb leak on EHCI driver

Michael Tessier michael.tessier at axiontech.ca
Wed Jan 7 03:50:22 AEDT 2015


> > If sound is ok when using only 1 codec and becomes choppy when adding 
> > a second codec, then it means that this issue is still in the 3.x 
> > kernel. This answer will tell me if it is worth working on using a newer kernel or not.
> > I have to say that I'm not a linux expert, so I see the migration to a 
> > newer kernel as a quite big amount of work...
>
> We have support for mx51 on the latest kernel. All you need to do is to describe your hardware on a device tree file. You can refer to arch/arm/boot/dts/imx51-babbage.dts as an example.
>
> Should be simple for you to make such test with the latest kernel.

I'll try to do so. My main concern is that even if it has been corrected
in the last kernel, I'm not free to just use the last kernel; our customers
already have units in their hands, and they bought us a "Form Fit & Function"
plattform. We have a huge bunch of documentation coming with each deliverable
(part of an ISO process, following IEEE software standards). So for the
company, migrating to the latest kernel is the last resort because of the
amount of work it would require. Thanks for the idea, I'll let you know.

Michael Tessier


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