From: Stanislaw Gruszka <sgruszka@redhat.com>
To: Zdenek Kabelac <zkabelac@redhat.com>
Cc: LKML <linux-kernel@vger.kernel.org>, linux-wireless@vger.kernel.org
Subject: Re: iwl3945 prints warning
Date: Tue, 29 Jan 2013 14:08:50 +0100 [thread overview]
Message-ID: <20130129130850.GC2306@redhat.com> (raw)
In-Reply-To: <5106867F.80309@redhat.com>
On Mon, Jan 28, 2013 at 03:09:03PM +0100, Zdenek Kabelac wrote:
> I'm getting tthis warning printed with current 3.8-rc kernel
> My hw is Lenovo T61.
>
>
> [ 5.920284] iwl3945 0000:03:00.0: loaded firmware version 15.32.2.9
> [ 5.976605] systemd[1]: Started NFS file locking service..
> [ 5.982624] NFSD: starting 90-second grace period (net ffffffff81aa08c0)
> [ 5.987930] ------------[ cut here ]------------
> [ 5.988026] WARNING: at lib/dma-debug.c:933 check_unmap+0x4ae/0x9a0()
> [ 5.988111] Hardware name: 6464CTO
> [ 5.988194] iwl3945 0000:03:00.0: DMA-API: device driver failed
> to check map error[device address=0x00000000bb7a7800] [size=4096
> bytes] [mapped as page]
We have to check dma_map_*() error. Fixing all of calls to dma_map* in
iwlegacy is not so simple. For now, you can just ignore this WARNING or
disable CONFIG_DMA_API_DEBUG.
Stanislaw
next prev parent reply other threads:[~2013-01-29 13:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-28 14:09 iwl3945 prints warning Zdenek Kabelac
2013-01-29 13:08 ` Stanislaw Gruszka [this message]
2013-03-07 22:18 ` Zdenek Kabelac
2013-03-08 10:31 ` Stanislaw Gruszka
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