From: Axel Lin <axel.lin@gmail.com>
Date: Wed, 1 Feb 2012 02:50:05 +0000 (+0800)
Subject: gpio: Add missing spin_lock_init in gpio-ml-ioh driver
X-Git-Tag: v3.2.18~25
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=347e3c6d3ed876bb5c36189265be02e952679e09;p=thirdparty%2Fkernel%2Fstable.git

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

commit 7e3a70fb7bccada029c188c89bfbf3c0a63c1500 upstream.

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>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

diff --git a/drivers/gpio/gpio-ml-ioh.c b/drivers/gpio/gpio-ml-ioh.c
index 461958fc2264e..271fd4959e4a5 100644
--- 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) {