From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Thu, 18 Jun 2009 11:30:16 +0000 (+0200)
Subject: [ARM] S3C: Fix gpio-config off-by-one bug
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=49fb88af23f3344ba53d6dbe34ac0b1426d81006;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[ARM] S3C: Fix gpio-config off-by-one bug

Fix gpio-config off-by-one bug. Without this patch, touching GPA0 pin on
S3C64XX platform causes kernel oops.

Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
---

diff --git a/arch/arm/plat-s3c/gpio-config.c b/arch/arm/plat-s3c/gpio-config.c
index 08044dec9731..456969b6fa0d 100644
--- a/arch/arm/plat-s3c/gpio-config.c
+++ b/arch/arm/plat-s3c/gpio-config.c
@@ -119,7 +119,7 @@ int s3c_gpio_setcfg_s3c64xx_4bit(struct s3c_gpio_chip *chip,
 	unsigned int shift = (off & 7) * 4;
 	u32 con;
 
-	if (off < 8 && chip->chip.ngpio >= 8)
+	if (off < 8 && chip->chip.ngpio > 8)
 		reg -= 4;
 
 	if (s3c_gpio_is_cfg_special(cfg)) {