We should call gpio_request() prior to reading the GPIO value.

Signed-off-by: Fabio Estevam <fabio.este...@nxp.com>
---
Applied on top of:

https://patchwork.ozlabs.org/patch/820477/

and

https://patchwork.ozlabs.org/patch/820298/

 board/freescale/mx6slevk/mx6slevk.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/board/freescale/mx6slevk/mx6slevk.c 
b/board/freescale/mx6slevk/mx6slevk.c
index e9a9bbf..ab72765 100644
--- a/board/freescale/mx6slevk/mx6slevk.c
+++ b/board/freescale/mx6slevk/mx6slevk.c
@@ -309,12 +309,15 @@ int board_mmc_getcd(struct mmc *mmc)
 
        switch (cfg->esdhc_base) {
        case USDHC1_BASE_ADDR:
+               gpio_request(USDHC1_CD_GPIO, "cd1_gpio");
                ret = !gpio_get_value(USDHC1_CD_GPIO);
                break;
        case USDHC2_BASE_ADDR:
+               gpio_request(USDHC2_CD_GPIO, "cd2_gpio");
                ret = !gpio_get_value(USDHC2_CD_GPIO);
                break;
        case USDHC3_BASE_ADDR:
+               gpio_request(USDHC3_CD_GPIO, "cd3_gpio");
                ret = !gpio_get_value(USDHC3_CD_GPIO);
                break;
        }
-- 
2.7.4

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