linux-kernel - [PATCH] pinctrl: nsp-gpio: fix type of iterator

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Date:	Wed, 23 Dec 2015 11:37:19 +0100
From:	Andrzej Hajda <a.hajda@...sung.com>
To:	Linus Walleij <linus.walleij@...aro.org>,
	Ray Jui <rjui@...adcom.com>,
	Scott Branden <sbranden@...adcom.com>,
	Jon Mason <jonmason@...adcom.com>
Cc:	Andrzej Hajda <a.hajda@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	linux-gpio@...r.kernel.org (open list:PIN CONTROL SUBSYSTEM),
	linux-arm-kernel@...ts.infradead.org (moderated list:BROADCOM IPROC ARM
	ARCHITECTURE),
	bcm-kernel-feedback-list@...adcom.com (open list:BROADCOM IPROC ARM
	ARCHITECTURE), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] pinctrl: nsp-gpio: fix type of iterator

Iterator i declared as unsigned is always non-negative so the
loop will never end.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2038576

Signed-off-by: Andrzej Hajda <a.hajda@...sung.com>
---
 drivers/pinctrl/bcm/pinctrl-nsp-gpio.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/bcm/pinctrl-nsp-gpio.c b/drivers/pinctrl/bcm/pinctrl-nsp-gpio.c
index 34648f6..ad5b04c 100644
--- a/drivers/pinctrl/bcm/pinctrl-nsp-gpio.c
+++ b/drivers/pinctrl/bcm/pinctrl-nsp-gpio.c
@@ -439,7 +439,8 @@ static int nsp_gpio_set_strength(struct nsp_gpio *chip, unsigned gpio,
 static int nsp_gpio_get_strength(struct nsp_gpio *chip, unsigned gpio,
 				 u16 *strength)
 {
-	unsigned int i, offset, shift;
+	unsigned int offset, shift;
+	int i;
 	u32 val;
 	unsigned long flags;
 
-- 
1.9.1

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