linux-kernel - [PATCH] pinctrl: rockchip: Simplify pin_to

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Message-ID: <1377244140.24387.1.camel@phoenix>
Date:	Fri, 23 Aug 2013 15:49:00 +0800
From:	Axel Lin <axel.lin@...ics.com>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	Heiko Stübner <heiko@...ech.de>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] pinctrl: rockchip: Simplify pin_to_bank equation

If (b->pin_base + b->nr_pins - 1) < pin is true, pin >= b->pin_base is always
true because b->nr_pins is never less than 0.
Thus this patch simplify the equation.

Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
 drivers/pinctrl/pinctrl-rockchip.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 319a64a..ea27806 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -186,8 +186,7 @@ static struct rockchip_pin_bank *pin_to_bank(struct rockchip_pinctrl *info,
 {
 	struct rockchip_pin_bank *b = info->ctrl->pin_banks;
 
-	while ((pin >= b->pin_base) &&
-			((b->pin_base + b->nr_pins - 1) < pin))
+	while (pin >= (b->pin_base + b->nr_pins))
 		b++;
 
 	return b;
-- 
1.8.1.2



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