From: Bartosz Golaszewski <brgl@bgdev.pl>
Date: Fri, 9 Jun 2017 11:41:27 +0000 (+0200)
Subject: gpio: mockup: refuse to accept an odd number of GPIO ranges
X-Git-Tag: v4.13-rc1~116^2~21
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b6c2e77d34ff775e4cf4ca803877dafd74737551;p=karo-tx-linux.git

gpio: mockup: refuse to accept an odd number of GPIO ranges

Currently we ignore the last odd range value, since each chip is
described by two values. Be more strict and require the user to
pass an even number of ranges.

Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---

diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c
index d78e8e081f5a..d95d37aeb91f 100644
--- a/drivers/gpio/gpio-mockup.c
+++ b/drivers/gpio/gpio-mockup.c
@@ -334,7 +334,7 @@ static int gpio_mockup_probe(struct platform_device *pdev)
 	int ret, i, base, ngpio;
 	char *chip_name;
 
-	if (gpio_mockup_params_nr < 2)
+	if (gpio_mockup_params_nr < 2 || (gpio_mockup_params_nr % 2))
 		return -EINVAL;
 
 	chips = devm_kzalloc(dev,