[PATCH] reset: sunxi: fix spinlock initialization

[Tyler Baker]

Call spin_lock_init() before the spinlocks are used, 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>
---
This patch was tested on 3.19.0-rc3 

 drivers/reset/reset-sunxi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/reset/reset-sunxi.c b/drivers/reset/reset-sunxi.c
index eebc52c..e37250c 100644
--- a/drivers/reset/reset-sunxi.c
+++ b/drivers/reset/reset-sunxi.c
@@ -157,6 +157,8 @@ 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;
-- 
2.1.3