[PATCH -next] pwm: meson: Fix missing spin_lock_init()

[Wei Yongjun]

From: Wei Yongjun <weiyongjun1 at huawei.com>

The driver allocates the spinlock but not initialize it.
Use spin_lock_init() on it to initialize it correctly.

This is detected by Coccinelle semantic patch.

Signed-off-by: Wei Yongjun <weiyongjun1 at huawei.com>
---
 drivers/pwm/pwm-meson.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
index bfbbe7f..778d088 100644
--- a/drivers/pwm/pwm-meson.c
+++ b/drivers/pwm/pwm-meson.c
@@ -465,6 +465,7 @@ static int meson_pwm_probe(struct platform_device *pdev)
 	if (IS_ERR(meson->base))
 		return PTR_ERR(meson->base);
 
+	spin_lock_init(&meson->lock);
 	meson->chip.dev = &pdev->dev;
 	meson->chip.ops = &meson_pwm_ops;
 	meson->chip.base = -1;