Re: DMA debug trace pointing to rtl8187

[Greg KH]

On Wed, May 06, 2009 at 01:30:47PM +0900, FUJITA Tomonori wrote:
> CC'ed linux-usb,
> 
> The ehci_hcd driver uses buffers on the stack for DMA?

No, it should not.

But USB drivers are known to do this incorrectly.  Those USB drivers
should be fixed.

> On Sun, 03 May 2009 17:36:24 +0200
> Eric Valette <eric.valette@xxxxxxx> wrote:
> 
> > ------------[ cut here ]------------
> > 
> > WARNING: at /usr/src/linux-2.6.22.9/lib/dma-debug.c:609
> 
> Hmm, the kernel version is wired. lib/dma-debug.c was added in
> 2.6.30-rc.

Very odd.  What specific kernel version caused this warning?

thanks,

greg k-h
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