From: b29396@freescale.com (Dong Aisheng)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/1] mmc: sdhci: fix lockdep error on tunning routine
Date: Tue, 24 Dec 2013 10:05:24 +0800 [thread overview]
Message-ID: <20131224020521.GA23230@shlinux2.ap.freescale.net> (raw)
In-Reply-To: <20131223122315.GJ26070@S2101-09.ap.freescale.net>
On Mon, Dec 23, 2013 at 08:23:17PM +0800, Shawn Guo wrote:
> On Mon, Dec 23, 2013 at 07:13:04PM +0800, Dong Aisheng wrote:
> > It's strange that this issue did not happen on kernel 3.10.17 with the same
> > code.
>
> Probably just because you did not turn on CONFIG_PROVE_LOCKING on your
> 3.10.17 kennel.
>
I did turn it on for the test.
Regards
Dong Aisheng
> Shawn
>
> > And looking at the code, before call spin_lock we already disable the mmc
> > controller irq, per on my understanding, the deadlock given by lockdep may not
> > be able to happen(pls fix me if wrong).
> > May the lockdep not track the specific irq disable?
> > Copy lockdep guy to comment.
> > ---
>
next prev parent reply other threads:[~2013-12-24 2:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-23 11:13 [PATCH 1/1] mmc: sdhci: fix lockdep error on tunning routine Dong Aisheng
2013-12-23 12:23 ` Shawn Guo
2013-12-24 2:05 ` Dong Aisheng [this message]
2013-12-26 7:58 ` Dong Aisheng
2014-01-13 10:32 ` Dong Aisheng
2014-01-13 12:04 ` Peter Zijlstra
2014-01-15 7:19 ` Dong Aisheng
2014-01-15 7:46 ` Lothar Waßmann
2014-01-15 8:44 ` Dong Aisheng
2014-01-15 10:09 ` Peter Zijlstra
2014-01-15 10:27 ` Dong Aisheng
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