From 4119617919c243755946699808ffd0f4befa62c7 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Fri, 8 Oct 2010 17:54:31 +0800 Subject: [PATCH] intel_pmic_gpio: fix off-by-one value range checking In pmic_irq_type(), we use gpio as array index for trigger, thus the valid value range for gpio should be 0 .. NUM_GPIO - 1. Signed-off-by: Axel Lin Signed-off-by: Matthew Garrett --- drivers/platform/x86/intel_pmic_gpio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/platform/x86/intel_pmic_gpio.c b/drivers/platform/x86/intel_pmic_gpio.c index c6e2a1d4fadc..f540ff96c53f 100644 --- a/drivers/platform/x86/intel_pmic_gpio.c +++ b/drivers/platform/x86/intel_pmic_gpio.c @@ -197,7 +197,7 @@ static int pmic_irq_type(unsigned irq, unsigned type) u32 gpio = irq - pg->irq_base; unsigned long flags; - if (gpio > pg->chip.ngpio) + if (gpio >= pg->chip.ngpio) return -EINVAL; spin_lock_irqsave(&pg->irqtypes.lock, flags);