linux-kernel - [PATCH] OMAP: hsmmc: Fix mux for non-OMAP pins

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Message-Id: <1315296483-8442-1-git-send-email-weber@corscience.de>
Date:	Tue,  6 Sep 2011 10:08:03 +0200
From:	Thomas Weber <weber@...science.de>
To:	silesh@...com
Cc:	Thomas Weber <weber@...science.de>,
	Tony Lindgren <tony@...mide.com> (maintainer:OMAP SUPPORT),
	Russell King <linux@....linux.org.uk> (maintainer:ARM PORT),
	linux-omap@...r.kernel.org (open list:OMAP SUPPORT),
	linux-arm-kernel@...ts.infradead.org (open list:ARM PORT),
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] OMAP: hsmmc: Fix mux for non-OMAP pins

The Devkit8000 uses a TWL4030 pin for card detection.
Thats why the error:
_omap_mux_init_gpio: Could not set gpio192
occurs.

This patch checks that the pin is on OMAP before
calling omap_mux_init_gpio.

Signed-off-by: Thomas Weber <weber@...science.de>
---
 arch/arm/mach-omap2/hsmmc.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-omap2/hsmmc.c b/arch/arm/mach-omap2/hsmmc.c
index a9b45c7..783d0f1 100644
--- a/arch/arm/mach-omap2/hsmmc.c
+++ b/arch/arm/mach-omap2/hsmmc.c
@@ -214,10 +214,12 @@ static int nop_mmc_set_power(struct device *dev, int slot, int power_on,
 static inline void omap_hsmmc_mux(struct omap_mmc_platform_data *mmc_controller,
 			int controller_nr)
 {
-	if (gpio_is_valid(mmc_controller->slots[0].switch_pin))
+	if (gpio_is_valid(mmc_controller->slots[0].switch_pin) && \
+		(mmc_controller->slots[0].switch_pin < OMAP_MAX_GPIO_LINES))
 		omap_mux_init_gpio(mmc_controller->slots[0].switch_pin,
 					OMAP_PIN_INPUT_PULLUP);
-	if (gpio_is_valid(mmc_controller->slots[0].gpio_wp))
+	if (gpio_is_valid(mmc_controller->slots[0].gpio_wp) && \
+		(mmc_controller->slots[0].gpio_wp < OMAP_MAX_GPIO_LINES))
 		omap_mux_init_gpio(mmc_controller->slots[0].gpio_wp,
 					OMAP_PIN_INPUT_PULLUP);
 	if (cpu_is_omap34xx()) {
-- 
1.7.6.1

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