Messages in this thread | | | From | Matěj Laitl <> | Subject | Re: Allocating buffers for USB transfers (again) | Date | Fri, 12 Aug 2011 01:50:01 +0200 |
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On 12. 8. 2011 Daniel Mack wrote: > > This patch actually makes the sound playback _worse_. Now I get strange > > squawks where previously at least first seconds of a song sounded > > normally. > > > > However, I no longer get "zero length buffer submitted" or that "... > > Weird." debug messages, only several megabytes of: (should I post these > > somewhere?) > > > > xhci_hcd 0000:05:00.0: Giveback URB ffff880114cec000, len = 880, > > expected = 1000, status = -115 > > xhci_hcd 0000:05:00.0: Giveback URB ffff880114740000, len = 352, > > expected = 1000, status = -115 > > xhci_hcd 0000:05:00.0: underrun event on endpoint > > Might be the hardware doesn't like this. As I said, the patch is blindly > written and I couldn't test it. Did you test this on a EHCI port as well?
Good point, this patch distorts the playback also on the EHCI port. (the playback seems to be 10 times slower than it should be)
Now I have to go, but I hope I'll get another patch from you tomorrow. :-)
Thanks, Matej
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