From: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
To: Vinod Koul <vinod.koul@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>,
linux-kernel@vger.kernel.org, qi.wang@intel.com,
yong.y.wang@intel.com, joel.clark@intel.com,
kok.howg.ewe@intel.com
Subject: Re: [PATCH] pch_dma: Fix suspend issue
Date: Fri, 07 Oct 2011 14:54:22 +0900 [thread overview]
Message-ID: <4E8E940E.7040701@dsn.lapis-semi.com> (raw)
In-Reply-To: <1317963658.1573.2229.camel@vkoul-udesk3>
(2011/10/07 14:00), Vinod Koul wrote:
> How would changing the max number of descriptors fix the memory
> violation?
>
In probe of pch_dma, you can see the following code.
for (i = 0; i < nr_channels; i++) {
snip...
pd_chan->membase = ®s->desc[i];
snip...
}
Max value of nr_channels is 12 defined at pci_table.
So, this caused memory access violation.
--
tomoya
ROHM Co., Ltd.
next prev parent reply other threads:[~2011-10-07 5:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-04 7:27 Tomoya MORINAGA
2011-10-07 5:00 ` Vinod Koul
2011-10-07 5:54 ` Tomoya MORINAGA [this message]
2011-10-07 6:14 ` Vinod Koul
2011-10-07 10:33 ` Tomoya MORINAGA
2011-10-07 14:18 ` Vinod Koul
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