platform-drivers-x86: intel_pmic_gpio: Fix off-by-one valid offset range check

Only pin 0-7 support input, so the valid offset range should be 0 ~ 7.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>

diff --git a/drivers/platform/x86/intel_pmic_gpio.c b/drivers/platform/x86/intel_pmic_gpio.c
index 2805988..40929e4 100644 (file)
--- a/drivers/platform/x86/intel_pmic_gpio.c
+++ b/drivers/platform/x86/intel_pmic_gpio.c
@@ -91,7 +91,7 @@ static void pmic_program_irqtype(int gpio, int type)
 
 static int pmic_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
-       if (offset > 8) {
+       if (offset >= 8) {
                pr_err("only pin 0-7 support input\n");
                return -1;/* we only have 8 GPIO can use as input */
        }
@@ -130,7 +130,7 @@ static int pmic_gpio_get(struct gpio_chip *chip, unsigned offset)
        int ret;
 
        /* we only have 8 GPIO pins we can use as input */
-       if (offset > 8)
+       if (offset >= 8)
                return -EOPNOTSUPP;
        ret = intel_scu_ipc_ioread8(GPIO0 + offset, &r);
        if (ret < 0)