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gpio: fix test on unsigned in lnw_irq_type()

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The wrong test was used, gpio is unsigned and it had an off-by-one.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Alek Du <alek.du@intel.com>
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>
This commit is contained in:
Roel Kluin 2009-12-15 16:46:18 -08:00 committed by Linus Torvalds
parent afd49a7e92
commit 4efec6272e
1 changed files with 1 additions and 1 deletions
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2
drivers/gpio/langwell_gpio.c
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@ -123,7 +123,7 @@ static int lnw_irq_type(unsigned irq, unsigned type)
void __iomem *grer = (void __iomem *)(&lnw->reg_base->GRER[reg]); void __iomem *grer = (void __iomem *)(&lnw->reg_base->GRER[reg]);
void __iomem *gfer = (void __iomem *)(&lnw->reg_base->GFER[reg]); void __iomem *gfer = (void __iomem *)(&lnw->reg_base->GFER[reg]);
if (gpio < 0 || gpio > lnw->chip.ngpio) if (gpio >= lnw->chip.ngpio)
return -EINVAL; return -EINVAL;
spin_lock_irqsave(&lnw->lock, flags); spin_lock_irqsave(&lnw->lock, flags);
if (type & IRQ_TYPE_EDGE_RISING) if (type & IRQ_TYPE_EDGE_RISING)