Re: DMA debug trace pointing to rtl8187

Eric Valette
2009-05-06T06:36:09Z

FUJITA Tomonori wrote:
> CC'ed linux-usb,
>
> The ehci_hcd driver uses buffers on the stack for DMA?
>
> On Sun, 03 May 2009 17:36:24 +0200
> Eric Valette <eric.valette@free.fr> 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.

No that's the file path. I use ketchup to apply patches...

>
>> check_for_stack+0x6b/0x8b()
>> Hardware name: P5W DH Deluxe
>>
>> ehci_hcd 0000:00:1d.7: DMA-API: device driver maps memory fromstack
>> [addr=ffff88007fa79968]
>> Modules linked in:
>>
>> Pid: 297, comm: khubd Not tainted 2.6.30-rc4-git1 #32

Here is the real version.

-- eric