gpio: GPIO_GET_CHIPINFO_IOCTL: Fix line offset validation

[cascardo/linux.git] / drivers / gpio / gpiolib.c

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index f0fc3a0..dac9753 100644 (file)
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -839,7 +839,7 @@ static long gpio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 
                if (copy_from_user(&lineinfo, ip, sizeof(lineinfo)))
                        return -EFAULT;
-               if (lineinfo.line_offset > gdev->ngpio)
+               if (lineinfo.line_offset >= gdev->ngpio)
                        return -EINVAL;
 
                desc = &gdev->descs[lineinfo.line_offset];