[PATCH RESEND] reset: sunxi: fix spinlock initialization

Philipp Zabel p.zabel at pengutronix.de
Tue Jan 13 01:36:00 PST 2015


Hi,

Am Montag, den 12.01.2015, 14:13 -0800 schrieb Olof Johansson:
> On Mon, Jan 12, 2015 at 05:17:06PM +0100, Maxime Ripard wrote:
> > On Mon, Jan 12, 2015 at 07:54:46AM -0800, Tyler Baker wrote:
> > > Call spin_lock_init() before the spinlocks are used, both in early init 
> > > and probe functions preventing a lockdep splat.
> > > 
> > > I have been observing lockdep complaining [1] during boot on my a80 optimus [2]
> > > when CONFIG_PROVE_LOCKING has been enabled. This patch resolves the splat,
> > > and has been tested on a few other sunxi platforms without issue.
> > > 
> > > [1] http://storage.kernelci.org/next/next-20150107/arm-multi_v7_defconfig+CONFIG_PROVE_LOCKING=y/lab-tbaker/boot-sun9i-a80-optimus.html
> > > [2] http://kernelci.org/boot/?a80-optimus
> > > 
> > > Signed-off-by: Tyler Baker <tyler.baker at linaro.org>
> > > Cc: <stable at vger.kernel.org>
> > 
> > Acked-by: Maxime Ripard <maxime.ripard at free-electrons.com>
> 
> Not entirely sure what to do with this one. You sent it to:arm at kernel.org, but
> it should probably have gone to Philipp?
> 
> We can pick it up with an ack from him though, no problem.

I have applied the patch here:

    git://git.pengutronix.de/git/pza/linux reset/for_v3.19

I was going to send a pull request tonight, but since I don't have any
other pending fixes besides this, and you already offered to pick it up,

Acked-by: Philipp Zabel <p.zabel at pengutronix.de>

regards
Philipp




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