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@tkos.co.il>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/gpio/pl061.c b/drivers/gpio/pl061.c
index aa8e7cb020d93bf2e3d9b24a1a75bb1e0d8850aa..80e4839866991be1972c3c9ebd2a14d67c937ea0 100644 (file)
--- 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;
                }