[U-Boot] [PATCH v3 1/2] omap_hsmmc: Check wp and cd GPIO for valid GPIO first

[Tom Rini]

When we cannot check write protect or card change via GPIO (and have
been passed -1 in omap_mmc_init), only try if gpio_is_valid is
true.  This prevents invalid GPIO messages from being seen on the
console when doing MMC operations

Signed-off-by: Tom Rini <trini at ti.com>

---
Changes in v3:
- Style comments from Nikita Kiryanov

Changes in v2:
- Use gpio_is_valid not just a check for >= 0 (Fabio Estevam)
---
 drivers/mmc/omap_hsmmc.c |   12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c
index 67cfcc2..d599482 100644
--- a/drivers/mmc/omap_hsmmc.c
+++ b/drivers/mmc/omap_hsmmc.c
@@ -73,13 +73,21 @@ static int omap_mmc_setup_gpio_in(int gpio, const char *label)
 static int omap_mmc_getcd(struct mmc *mmc)
 {
 	int cd_gpio = ((struct omap_hsmmc_data *)mmc->priv)->cd_gpio;
-	return gpio_get_value(cd_gpio);
+
+	if (gpio_is_valid(cd_gpio))
+		return gpio_get_value(cd_gpio);
+
+	return -1;
 }
 
 static int omap_mmc_getwp(struct mmc *mmc)
 {
 	int wp_gpio = ((struct omap_hsmmc_data *)mmc->priv)->wp_gpio;
-	return gpio_get_value(wp_gpio);
+
+	if (gpio_is_valid(wp_gpio))
+		return gpio_get_value(wp_gpio);
+
+	return -1;
 }
 #else
 static inline int omap_mmc_setup_gpio_in(int gpio, const char *label)
-- 
1.7.9.5