From: James Bottomley <James.Bottomley@suse.de>
To: 王神 <oujin.rera@gmail.com>
Cc: linux-scsi@vger.kernel.org
Subject: Re: dma_mask on scsi_calculate_bounce_limit
Date: Thu, 18 Nov 2010 09:21:55 -0600 [thread overview]
Message-ID: <1290093715.3041.13.camel@mulgrave.site> (raw)
In-Reply-To: <AANLkTin4V6ZZ5T5x+had0+4hL3JzGyR3sa68qaJeZBYv@mail.gmail.com>
On Thu, 2010-11-18 at 14:20 +0530, 王神 wrote:
> Hi
>
> I have enabled DMA for my host device and when i connect a scsi device
> to the host, it crashes in the following code..
>
> Function: scsi_calculate_bounce_limit
>
> if (host_dev && host_dev->dma_mask)
> bounce_limit = *host_dev->dma_mask;
>
> "*dma_mask" is illegal pointer operation. I would like to understand
> is this known and is there reason behind such a code ?
It likely means you're operating on a new architecture and its generic
devices haven't been set up correctly.
James
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next prev parent reply other threads:[~2010-11-18 15:22 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-18 8:50 dma_mask on scsi_calculate_bounce_limit 王神
2010-11-18 15:21 ` James Bottomley [this message]
2010-11-18 17:54 ` 王神
2010-11-19 0:52 ` James Bottomley
2010-11-19 6:41 ` 王神
2010-11-19 15:13 ` Douglas Gilbert
2010-11-19 15:15 ` James Bottomley
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