From: Oliver Neukum <oliver@neukum.org>
To: Dmitry Baryshkov <dbaryshkov@gmail.com>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: warning on device removal
Date: Thu, 4 Sep 2008 14:36:48 +0200 [thread overview]
Message-ID: <200809041436.49083.oliver@neukum.org> (raw)
In-Reply-To: <20080904122022.GA550@doriath.ww600.siemens.net>
Am Donnerstag 04 September 2008 14:20:22 schrieb Dmitry Baryshkov:
> Hi,
>
> I've got the following trace on one of my arm boards when removing
> the usb masstorage device:
>
> ------------[ cut here ]------------
> WARNING: at /home/lumag/tosa-tree/arch/arm/mm/consistent.c:368 dma_free_coherent+0x34/0x248()
> Modules linked in:
> [<c0028fe4>] (dump_stack+0x0/0x14) from [<c003c810>] (warn_on_slowpath+0x4c/0x84)
> [<c003c7c4>] (warn_on_slowpath+0x0/0x84) from [<c0029e54>] (dma_free_coherent+0x34/0x248)
Looks like a principal problem we have with that architecture.
Is arm incapable of supporting buffer freeing in hard irq context
or do we use the wrong API?
Regards
Oliver
next parent reply other threads:[~2008-09-04 12:35 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20080904122022.GA550@doriath.ww600.siemens.net>
2008-09-04 12:36 ` Oliver Neukum [this message]
2008-09-05 6:56 ` Takashi Iwai
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