linux-kernel - [PATCH 2/2] RFT: pinctrl: sirf: move sgpio lock into state container

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1398287792-19831-3-git-send-email-linus.walleij@linaro.org>
Date:	Wed, 23 Apr 2014 23:16:32 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	linux-kernel@...r.kernel.org, Barry Song <Baohua.Song@....com>,
	Barry Song <baohua@...nel.org>
Cc:	linux-gpio@...r.kernel.org,
	Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH 2/2] RFT: pinctrl: sirf: move sgpio lock into state container

Instead of referring to a global static variable for the sgpio
locking, use the state container to contain the lock.

Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
 drivers/pinctrl/sirf/pinctrl-sirf.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/pinctrl/sirf/pinctrl-sirf.c b/drivers/pinctrl/sirf/pinctrl-sirf.c
index 0613e0c77e8a..2ca5424b2bca 100644
--- a/drivers/pinctrl/sirf/pinctrl-sirf.c
+++ b/drivers/pinctrl/sirf/pinctrl-sirf.c
@@ -40,10 +40,9 @@ struct sirfsoc_gpio_chip {
 	struct of_mm_gpio_chip chip;
 	bool is_marco; /* for marco, some registers are different with prima2 */
 	struct sirfsoc_gpio_bank sgpio_bank[SIRFSOC_GPIO_NO_OF_BANKS];
+	spinlock_t lock;
 };
 
-static DEFINE_SPINLOCK(sgpio_lock);
-
 static struct sirfsoc_pin_group *sirfsoc_pin_groups;
 static int sirfsoc_pingrp_cnt;
 
@@ -450,13 +449,13 @@ static void sirfsoc_gpio_irq_ack(struct irq_data *d)
 
 	offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
 
-	spin_lock_irqsave(&sgpio_lock, flags);
+	spin_lock_irqsave(&sgpio->lock, flags);
 
 	val = readl(sgpio->chip.regs + offset);
 
 	writel(val, sgpio->chip.regs + offset);
 
-	spin_unlock_irqrestore(&sgpio_lock, flags);
+	spin_unlock_irqrestore(&sgpio->lock, flags);
 }
 
 static void __sirfsoc_gpio_irq_mask(struct sirfsoc_gpio_chip *sgpio,
@@ -468,14 +467,14 @@ static void __sirfsoc_gpio_irq_mask(struct sirfsoc_gpio_chip *sgpio,
 
 	offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
 
-	spin_lock_irqsave(&sgpio_lock, flags);
+	spin_lock_irqsave(&sgpio->lock, flags);
 
 	val = readl(sgpio->chip.regs + offset);
 	val &= ~SIRFSOC_GPIO_CTL_INTR_EN_MASK;
 	val &= ~SIRFSOC_GPIO_CTL_INTR_STS_MASK;
 	writel(val, sgpio->chip.regs + offset);
 
-	spin_unlock_irqrestore(&sgpio_lock, flags);
+	spin_unlock_irqrestore(&sgpio->lock, flags);
 }
 
 static void sirfsoc_gpio_irq_mask(struct irq_data *d)
@@ -498,14 +497,14 @@ static void sirfsoc_gpio_irq_unmask(struct irq_data *d)
 
 	offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
 
-	spin_lock_irqsave(&sgpio_lock, flags);
+	spin_lock_irqsave(&sgpio->lock, flags);
 
 	val = readl(sgpio->chip.regs + offset);
 	val &= ~SIRFSOC_GPIO_CTL_INTR_STS_MASK;
 	val |= SIRFSOC_GPIO_CTL_INTR_EN_MASK;
 	writel(val, sgpio->chip.regs + offset);
 
-	spin_unlock_irqrestore(&sgpio_lock, flags);
+	spin_unlock_irqrestore(&sgpio->lock, flags);
 }
 
 static int sirfsoc_gpio_irq_type(struct irq_data *d, unsigned type)
@@ -519,7 +518,7 @@ static int sirfsoc_gpio_irq_type(struct irq_data *d, unsigned type)
 
 	offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
 
-	spin_lock_irqsave(&sgpio_lock, flags);
+	spin_lock_irqsave(&sgpio->lock, flags);
 
 	val = readl(sgpio->chip.regs + offset);
 	val &= ~(SIRFSOC_GPIO_CTL_INTR_STS_MASK | SIRFSOC_GPIO_CTL_OUT_EN_MASK);
@@ -551,7 +550,7 @@ static int sirfsoc_gpio_irq_type(struct irq_data *d, unsigned type)
 
 	writel(val, sgpio->chip.regs + offset);
 
-	spin_unlock_irqrestore(&sgpio_lock, flags);
+	spin_unlock_irqrestore(&sgpio->lock, flags);
 
 	return 0;
 }
@@ -714,11 +713,11 @@ static int sirfsoc_gpio_direction_output(struct gpio_chip *chip, unsigned gpio,
 
 	offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
 
-	spin_lock_irqsave(&sgpio_lock, flags);
+	spin_lock_irqsave(&sgpio->lock, flags);
 
 	sirfsoc_gpio_set_output(sgpio, bank, offset, value);
 
-	spin_unlock_irqrestore(&sgpio_lock, flags);
+	spin_unlock_irqrestore(&sgpio->lock, flags);
 
 	return 0;
 }
@@ -811,6 +810,7 @@ static int sirfsoc_gpio_probe(struct device_node *np)
 	sgpio = devm_kzalloc(&pdev->dev, sizeof(*sgpio), GFP_KERNEL);
 	if (!sgpio)
 		return -ENOMEM;
+	spin_lock_init(&sgpio->lock);
 
 	regs = of_iomap(np, 0);
 	if (!regs)
-- 
1.9.0

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/