linux-kernel - [PATCH v2 3/7] gpio: mockup: refuse to accept an odd number of GPIO ranges

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Message-Id: <1496134720-5363-4-git-send-email-brgl@bgdev.pl>
Date:   Tue, 30 May 2017 10:58:36 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Alexandre Courbot <gnurou@...il.com>,
        Bamvor Jian Zhang <bamvor.zhangjian@...aro.org>
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Bartosz Golaszewski <brgl@...ev.pl>
Subject: [PATCH v2 3/7] 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@...ev.pl>
---
 drivers/gpio/gpio-mockup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c
index d78e8e0..d95d37a 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,
-- 
2.9.3