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Message-ID: <4A012FC8.3020304@free.fr>
Date:	Wed, 06 May 2009 08:35:52 +0200
From:	Eric Valette <eric.valette@...e.fr>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
CC:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: DMA debug trace pointing to rtl8187

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@...e.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

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