Re: xhci_hcd ERROR no room on ep ring, xhci_hcd WARN Event TRB for slot 1 ep 4 with no TDs queued?

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On Tue, Aug 10, 2010 at 10:21:10PM +0200, Sander Eikelenboom wrote:
> Hi Sarah,
> 
> Just triend on 2.6.35 final + isoc patches and debugfs and some debug options (kmemleak spinlock, dma-api) on.

Which debug options did you have turned on?  If it was CONFIG_USB_DEBUG
and CONFIG_USB_XHCI_HCD_DEBUGGING, then you're going to have a lot of
output.  You should be able to turn off CONFIG_USB_XHCI_HCD_DEBUGGING.

> On baremetal, so without xen interfering.
> But it seems to be even worse than with Xen ... The console gets completely flooded with the
> 
> 
> Aug 10 22:01:01 localhost kernel: [  322.691778] xhci_hcd 0000:04:00.0: @206c60e0 2082c7b4 00000000 00040b4c 80001424
> Aug 10 22:01:01 localhost kernel: [  322.691778] xhci_hcd 0000:04:00.0: @206c60f0 20840000 00000000 00040b4c 80001424
> Aug 10 22:01:01 localhost kernel: [  322.691778] xhci_hcd 0000:04:00.0: @206c6100 20840b4c 00000000 00040b4c 80001424
> Aug 10 22:01:01 localhost kernel: [  322.691778] xhci_hcd 0000:04:00.0: @206c6110 20841698 00000000 00040b4c 80001424
> Aug 10 22:01:01 localhost kernel: [  322.691778] xhci_hcd 0000:04:00.0: @206c6120 208421e4 00000000 00040b4c 80001424
> Aug 10 22:01:01 localhost kernel: [  322.691778] xhci_hcd 0000:04:00.0: @206c6130 20842d30 00000000 00040b4c 80001424
> 
> And i had a hard time stopping ffmpeg from grabbing.

What do you mean by "hard time"?  Like the program wouldn't quit, or the
system was not responsive because of the excess debug messages, or ?

Sarah Sharp
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