gpio: Add missing spin_lock_init in gpio-ml-ioh driver

This bug was introduced by commit 54be5663
"gpio-ml-ioh: Support interrupt function" which adds a spinlock to struct
ioh_gpio but never init the spinlock.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

diff --git a/drivers/gpio/gpio-ml-ioh.c b/drivers/gpio/gpio-ml-ioh.c
index 03d6dd5..f0febe5 100644 (file)
--- a/drivers/gpio/gpio-ml-ioh.c
+++ b/drivers/gpio/gpio-ml-ioh.c
@@ -448,6 +448,7 @@ static int __devinit ioh_gpio_probe(struct pci_dev *pdev,
                chip->reg = chip->base;
                chip->ch = i;
                mutex_init(&chip->lock);
+               spin_lock_init(&chip->spinlock);
                ioh_gpio_setup(chip, num_ports[i]);
                ret = gpiochip_add(&chip->gpio);
                if (ret) {