linux-kernel - [PATCH] gpio: Add missing spin_lock

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Message-ID: <1326784710.16397.1.camel@phoenix>
Date:	Tue, 17 Jan 2012 15:18:30 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Tomoya MORINAGA <tomoya-linux@....lapis-semi.com>,
	Feng Tang <feng.tang@...el.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Linus Walleij <linus.walleij@...ricsson.com>
Subject: [PATCH] gpio: Add missing spin_lock_init in gpio-ml-ioh driver

I think 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@...il.com>
---
 drivers/gpio/gpio-ml-ioh.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/gpio/gpio-ml-ioh.c b/drivers/gpio/gpio-ml-ioh.c
index 461958f..271fd49 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) {
-- 
1.7.5.4



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