ARM: OMAP: hsmmc: Add support 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@corscience.de>
[tony@atomide.com: updated comments]
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/arch/arm/mach-omap2/hsmmc.c b/arch/arm/mach-omap2/hsmmc.c
index 59830d0eeb55..997b33d76418 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()) {