@@ -102,6 +102,8 @@ static int sunxi_reset_init(struct device_node *np)
goto err_alloc;
}
+ spin_lock_init(&data->lock);
+
data->rcdev.owner = THIS_MODULE;
data->rcdev.nr_resets = size * 32;
data->rcdev.ops = &sunxi_reset_ops;
@@ -157,6 +159,8 @@ static int sunxi_reset_probe(struct platform_device *pdev)
if (IS_ERR(data->membase))
return PTR_ERR(data->membase);
+ spin_lock_init(&data->lock);
+
data->rcdev.owner = THIS_MODULE;
data->rcdev.nr_resets = resource_size(res) * 32;
data->rcdev.ops = &sunxi_reset_ops;
This is a note to let you know that I have just added a patch titled reset: sunxi: fix spinlock initialization to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue This patch is scheduled to be released in version 3.16.7-ckt5. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.16.y-ckt tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From e3c75d412b520318c62a348150f9f8965b128fc0 Mon Sep 17 00:00:00 2001 From: Tyler Baker <tyler.baker@linaro.org> Date: Mon, 12 Jan 2015 07:54:46 -0800 Subject: reset: sunxi: fix spinlock initialization commit 41544f9f38f19cb46dc9a8fa37c58677a0300899 upstream. 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@linaro.org> Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- drivers/reset/reset-sunxi.c | 4 ++++ 1 file changed, 4 insertions(+) -- 2.1.4