rtc: at91sam9: Fix missing spin_lock_init()

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 <weiyj.lk@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index 99732e6f8c3b295a9647c5d61caf4779b31d6adf..7418a763ce5202b37f96b0cf26863400aa953982 100644 (file)
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -375,6 +375,7 @@ static int at91_rtc_probe(struct platform_device *pdev)
        if (!rtc)
                return -ENOMEM;
 
+       spin_lock_init(&rtc->lock);
        rtc->irq = irq;
 
        /* platform setup code should have handled this; sigh */