[ 49/68] gpio: Add missing spin_lock_init in gpio-pch driver

[Greg KH]

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Axel Lin <axel.lin@xxxxxxxxx>

commit d166370ad86b33b1111af3a0cdd7de94e03789a6 upstream.

This bug was introduced by commit d568a681
"gpio-pch: add spinlock in suspend/resume processing"
which adds a spinlock to struct pch_gpio but never init the spinlock.

Reported-by: Tomoya MORINAGA <tomoya.rohm@xxxxxxxxx>
Signed-off-by: Axel Lin <axel.lin@xxxxxxxxx>
Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Grant Likely <grant.likely@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/gpio/gpio-pch.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpio/gpio-pch.c
+++ b/drivers/gpio/gpio-pch.c
@@ -392,6 +392,7 @@ static int __devinit pch_gpio_probe(stru
 	chip->reg = chip->base;
 	pci_set_drvdata(pdev, chip);
 	mutex_init(&chip->lock);
+	spin_lock_init(&chip->spinlock);
 	pch_gpio_setup(chip);
 	ret = gpiochip_add(&chip->gpio);
 	if (ret) {


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