backlight: ams369fg06: replace EFAULT with EINVAL

Replace EFAULT with EINVAL, because EFAULT tends to be for the invalid
memory addresses.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/backlight/ams369fg06.c

@@ -328,7 +328,7 @@ static int ams369fg06_power_on(struct ams369fg06 *lcd)
 
 	if (!pd->power_on) {
 		dev_err(lcd->dev, "power_on is NULL.\n");
-		return -EFAULT;
+		return -EINVAL;
 	} else {
 		pd->power_on(lcd->ld, 1);
 		msleep(pd->power_on_delay);
@@ -336,7 +336,7 @@ static int ams369fg06_power_on(struct ams369fg06 *lcd)
 
 	if (!pd->reset) {
 		dev_err(lcd->dev, "reset is NULL.\n");
-		return -EFAULT;
+		return -EINVAL;
 	} else {
 		pd->reset(lcd->ld);
 		msleep(pd->reset_delay);
@@ -485,7 +485,7 @@ static int ams369fg06_probe(struct spi_device *spi)
 	lcd->lcd_pd = spi->dev.platform_data;
 	if (!lcd->lcd_pd) {
 		dev_err(&spi->dev, "platform data is NULL\n");
-		return -EFAULT;
+		return -EINVAL;
 	}
 
 	ld = lcd_device_register("ams369fg06", &spi->dev, lcd,