From: Clemens Ladisch <clemens@ladisch.de>
To: poma <pomidorabelisima@gmail.com>, Takashi Iwai <tiwai@suse.de>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>,
Mailing-List fedora-kernel <kernel@lists.fedoraproject.org>
Subject: Re: debug_dma_assert_idle - snd_hda_intel - cpu touching an active dma mapped cacheline
Date: Thu, 17 Apr 2014 09:40:59 +0200 [thread overview]
Message-ID: <534F858B.4060208@ladisch.de> (raw)
In-Reply-To: <534F01D1.9000206@gmail.com>
poma wrote:
> Sound whispers,
???
> WARNING: CPU: 3 PID: 900 at lib/dma-debug.c:593 debug_dma_assert_idle+0x159/0x1d0()
> snd_hda_intel 0000:00:07.0: DMA-API: cpu touching an active dma mapped cacheline [cln=0x03014000]
> ...
> Mapped at:
> [<c074ec12>] debug_dma_alloc_coherent+0x22/0x70
"Coherent" means "touching DMA mappings is allowed".
Why does dma-debug complain about that?
Regards,
Clemens
next prev parent reply other threads:[~2014-04-17 7:41 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-16 22:18 debug_dma_assert_idle - snd_hda_intel - cpu touching an active dma mapped cacheline poma
2014-04-17 7:40 ` Clemens Ladisch [this message]
2014-04-17 17:18 ` poma
2014-04-23 0:53 ` poma
2014-04-23 5:33 ` poma
2014-05-01 5:07 ` poma
2014-05-06 1:57 ` poma
2014-05-07 10:14 ` poma
2014-05-11 10:02 ` poma
2014-08-30 0:48 ` debug_dma_assert_idle - ahci " poma
2014-09-18 2:55 ` debug_dma_assert_idle - ohci " poma
2014-05-01 17:24 ` debug_dma_assert_idle - snd_hda_intel " Dan Williams
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