OMAP2/3: mmc-twl4030: use correct controller in twl_mmc23_set_power

twl_mmc23_set_power() has MMC2 twl_mmc_controller hardcoded in it, which
breaks MMC3. Find the right controller to use instead.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/mmc-twl4030.c

@@ -263,8 +263,19 @@ static int twl_mmc1_set_power(struct device *dev, int slot, int power_on,
 static int twl_mmc23_set_power(struct device *dev, int slot, int power_on, int vdd)
 {
 	int ret = 0;
-	struct twl_mmc_controller *c = &hsmmc[1];
+	struct twl_mmc_controller *c = NULL;
 	struct omap_mmc_platform_data *mmc = dev->platform_data;
+	int i;
+
+	for (i = 1; i < ARRAY_SIZE(hsmmc); i++) {
+		if (mmc == hsmmc[i].mmc) {
+			c = &hsmmc[i];
+			break;
+		}
+	}
+
+	if (c == NULL)
+		return -ENODEV;
 
 	/* If we don't see a Vcc regulator, assume it's a fixed
 	 * voltage always-on regulator.