linux-kernel - [PATCH 1/2] gpio: pl061: fix probe error handling code

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Message-Id: <1245684055-9185-1-git-send-email-baruch@tkos.co.il>
Date:	Mon, 22 Jun 2009 18:20:54 +0300
From:	Baruch Siach <baruch@...s.co.il>
To:	linux-kernel@...r.kernel.org
Cc:	David Brownell <dbrownell@...rs.sourceforge.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-arm-kernel@...ts.arm.linux.org.uk,
	Baruch Siach <baruch@...s.co.il>
Subject: [PATCH 1/2] gpio: pl061: fix probe error handling code

Note that IRQ has not been initialized when kmalloc() fails.

Also, use DECLARE_BITMAP() to make the code clearer.

Signed-off-by: Baruch Siach <baruch@...s.co.il>
---
 drivers/gpio/pl061.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/gpio/pl061.c b/drivers/gpio/pl061.c
index aa8e7cb..80e4839 100644
--- a/drivers/gpio/pl061.c
+++ b/drivers/gpio/pl061.c
@@ -221,7 +221,7 @@ static int __init pl061_probe(struct amba_device *dev, struct amba_id *id)
 	struct pl061_gpio *chip;
 	struct list_head *chip_list;
 	int ret, irq, i;
-	static unsigned long init_irq[BITS_TO_LONGS(NR_IRQS)];
+	static DECLARE_BITMAP(init_irq, NR_IRQS);
 
 	pdata = dev->dev.platform_data;
 	if (pdata == NULL)
@@ -280,6 +280,7 @@ static int __init pl061_probe(struct amba_device *dev, struct amba_id *id)
 	if (!test_and_set_bit(irq, init_irq)) { /* list initialized? */
 		chip_list = kmalloc(sizeof(*chip_list), GFP_KERNEL);
 		if (chip_list == NULL) {
+			clear_bit(irq, init_irq);
 			ret = -ENOMEM;
 			goto iounmap;
 		}
-- 
1.6.3.1

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