linux-kernel - [PATCH 5/9] gpio: pl061: convert to use 0 for no irq

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Date:	Wed, 14 Dec 2011 09:28:54 -0600
From:	Rob Herring <robherring2@...il.com>
To:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	devicetree-discuss@...ts.ozlabs.org
Cc:	Grant Likely <grant.likely@...retlab.ca>, shawn.guo@...escale.com,
	Kukjin Kim <kgene.kim@...sung.com>,
	Kevin Hilman <khilman@...com>,
	Tony Lindgren <tony@...mide.com>,
	Barry Song <baohua.song@....com>,
	Linus Walleij <linus.ml.walleij@...il.com>,
	Rob Herring <rob.herring@...xeda.com>
Subject: [PATCH 5/9] gpio: pl061: convert to use 0 for no irq

From: Rob Herring <rob.herring@...xeda.com>

We don't want drivers using NO_IRQ, so remove its use. For now, 0 or
-1 means no irq until platforms are converted to use 0.

Signed-off-by: Rob Herring <rob.herring@...xeda.com>
Cc: Grant Likely <grant.likely@...retlab.ca>
Cc: Linus Walleij <linus.ml.walleij@...il.com>
---
 drivers/gpio/gpio-pl061.c  |    8 ++++----
 include/linux/amba/pl061.h |    2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c
index 0f718f9..fe19dec 100644
--- a/drivers/gpio/gpio-pl061.c
+++ b/drivers/gpio/gpio-pl061.c
@@ -53,7 +53,7 @@ struct pl061_gpio {
 	spinlock_t		irq_lock;	/* IRQ registers */
 
 	void __iomem		*base;
-	unsigned		irq_base;
+	int			irq_base;
 	struct gpio_chip	gc;
 };
 
@@ -119,7 +119,7 @@ static int pl061_to_irq(struct gpio_chip *gc, unsigned offset)
 {
 	struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc);
 
-	if (chip->irq_base == NO_IRQ)
+	if (chip->irq_base <= 0)
 		return -EINVAL;
 
 	return chip->irq_base + offset;
@@ -250,7 +250,7 @@ static int pl061_probe(struct amba_device *dev, const struct amba_id *id)
 		chip->irq_base = pdata->irq_base;
 	} else if (dev->dev.of_node) {
 		chip->gc.base = -1;
-		chip->irq_base = NO_IRQ;
+		chip->irq_base = 0;
 	} else {
 		ret = -ENODEV;
 		goto free_mem;
@@ -290,7 +290,7 @@ static int pl061_probe(struct amba_device *dev, const struct amba_id *id)
 	 * irq_chip support
 	 */
 
-	if (chip->irq_base == NO_IRQ)
+	if (chip->irq_base <= 0)
 		return 0;
 
 	writeb(0, chip->base + GPIOIE); /* disable irqs */
diff --git a/include/linux/amba/pl061.h b/include/linux/amba/pl061.h
index 2412af9..fb83c04 100644
--- a/include/linux/amba/pl061.h
+++ b/include/linux/amba/pl061.h
@@ -7,7 +7,7 @@ struct pl061_platform_data {
 	unsigned	gpio_base;
 
 	/* number of the first IRQ.
-	 * If the IRQ functionality in not desired this must be set to NO_IRQ.
+	 * If the IRQ functionality in not desired this must be set to 0.
 	 */
 	unsigned	irq_base;
 
-- 
1.7.5.4

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