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From: Sean Paul <seanpaul@chromium.org>
To: grant.likely@secretlab.ca, linus.walleij@stericsson.com,
	linux-kernel@vger.kernel.org
Cc: olofj@chromium.org, dianders@chromium.org, seanpaul@chromium.org
Subject: [PATCH] gpio: samsung: Fix off-by-one bug in gpio addresses
Date: Fri, 20 Jul 2012 13:58:59 -0700	[thread overview]
Message-ID: <1342817939-7118-1-git-send-email-seanpaul@chromium.org> (raw)

Move gpc4 to the end of the automatically processed gpio controllers so
we don't taint the automatic offset calculation.

This bug caused all controllers coming after gpc4 to map to the
incorrect address. The result is <&gpd1 0 0 0 0> would actually map to
GPIO 0 in gpd0.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
---
 drivers/gpio/gpio-samsung.c |   14 +++++++-------
 1 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c
index b6453d0..e4599b4 100644
--- a/drivers/gpio/gpio-samsung.c
+++ b/drivers/gpio/gpio-samsung.c
@@ -2454,12 +2454,6 @@ static struct samsung_gpio_chip exynos5_gpios_1[] = {
 		},
 	}, {
 		.chip	= {
-			.base	= EXYNOS5_GPC4(0),
-			.ngpio	= EXYNOS5_GPIO_C4_NR,
-			.label	= "GPC4",
-		},
-	}, {
-		.chip	= {
 			.base	= EXYNOS5_GPD0(0),
 			.ngpio	= EXYNOS5_GPIO_D0_NR,
 			.label	= "GPD0",
@@ -2513,6 +2507,12 @@ static struct samsung_gpio_chip exynos5_gpios_1[] = {
 			.label	= "GPY6",
 		},
 	}, {
+		.chip	= {
+			.base	= EXYNOS5_GPC4(0),
+			.ngpio	= EXYNOS5_GPIO_C4_NR,
+			.label	= "GPC4",
+		},
+	}, {
 		.config	= &samsung_gpio_cfgs[9],
 		.irq_base = IRQ_EINT(0),
 		.chip	= {
@@ -2833,7 +2833,7 @@ static __init void exynos5_gpiolib_init(void)
 	}
 
 	/* need to set base address for gpc4 */
-	exynos5_gpios_1[11].base = gpio_base1 + 0x2E0;
+	exynos5_gpios_1[20].base = gpio_base1 + 0x2E0;
 
 	/* need to set base address for gpx */
 	chip = &exynos5_gpios_1[21];
-- 
1.7.7.3


             reply	other threads:[~2012-07-20 20:59 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-20 20:58 Sean Paul [this message]
2012-07-20 21:06 ` Doug Anderson
2012-07-30  8:04   ` 박상수
2012-07-30  8:37     ` Thomas Abraham
2012-07-27 23:09 ` Linus Walleij
2012-07-31 23:27   ` Kukjin Kim
2012-08-05  9:59 ` Linus Walleij

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