Hi, On Sat, May 21, 2016 at 08:50:32PM +0300, Matwey V. Kornilov wrote: > 2016-05-21 6:13 GMT+03:00 Bin Liu <binmlist@xxxxxxxxx>: > > Hi, > > > > On Fri, May 20, 2016 at 4:20 PM, Matwey V. Kornilov <matwey@xxxxxxxxxx> wrote: > >> 2016-05-21 0:12 GMT+03:00 Bin Liu <b-liu@xxxxxx>: > >>> Hi, > >>> > >>> On Sat, May 21, 2016 at 12:05:06AM +0300, Matwey V. Kornilov wrote: > >>>> By the way, is it ok that function musb_rx_dma_iso_cppi41 uses > >>>> hw_ep->tx_channel? I would suppose that it should use rx_channel > >>>> instead. > >>> > >>> I just got here, and am wondering the same. But the question is why just > >>> your case hit the problem. I will try to look at it more next week. > >>> > >>> I had an impression the linux-usb@ has a discussion before about > >>> rx/tx-channel messing up, will have to look it up. > >>> > >> > >> Thank you. > >> If you need additional info, I can use kgdb with this issue. > > > > After reviewed the code, it must be hw_ep->rx_channel instead. It is likely a > > bug caused by commit 069a3fd (usb: musb: Remove ifdefs for musb_host_rx > > in musb_host.c part1). Please test with the following patch. > > > > I've just tested this patch. Indeed, it helps to avoid kernel panic. Thanks for testing it. > Now, I can interact with my webcam and watch video-stream in xawtv. > It would be great if the patch could become a part of 4.6.x stable tree. Sure. Would you mind to add your Reported-by in the patch? Regards, -Bin. -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
