From: Dan Williams <dan.j.williams@intel.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: WARNING: at drivers/dma/dmaengine.c:352 dma_issue_pending_all+0x77/0x15d()
Date: Mon, 19 Jan 2009 15:18:52 -0700 [thread overview]
Message-ID: <1232403532.22432.14.camel@dwillia2-linux.ch.intel.com> (raw)
In-Reply-To: <1232402680.22432.5.camel@dwillia2-linux.ch.intel.com>
On Mon, 2009-01-19 at 15:04 -0700, Dan Williams wrote:
> On Mon, 2009-01-19 at 14:31 -0700, Ingo Molnar wrote:
> > FYI, i'm getting this on a testbox, on v2.6.29-rc2:
>
> Thanks for the report. I assume this is with CONFIG_DMA_ENGINE=n?
> dma_issue_pending_all should be a nop in that case. I'll apply the
> following with your confirmation.
>
Spoke too soon, the call to dma_issue_pending_all is protected by ifdef
CONFIG_NET_DMA. Reading that counter without synchronizing with
dma_list_mutex is a problem. I think I'll just remove the warnings for
now.
--
Dan
prev parent reply other threads:[~2009-01-19 22:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-19 21:31 WARNING: at drivers/dma/dmaengine.c:352 dma_issue_pending_all+0x77/0x15d() Ingo Molnar
2009-01-19 22:04 ` Dan Williams
2009-01-19 22:18 ` Dan Williams [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1232403532.22432.14.camel@dwillia2-linux.ch.intel.com \
--to=dan.j.williams@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=rjw@sisk.pl \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.