This patch makes power_on() call optional. The voltage source can
be provided to some boards using ams369fg06 panel, thus in this
case, power on/off sequence is not necessary.

Signed-off-by: Jingoo Han <jg1....@samsung.com>
---
 drivers/video/backlight/ams369fg06.c |    8 +++-----
 1 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/video/backlight/ams369fg06.c 
b/drivers/video/backlight/ams369fg06.c
index d29e494..c02aa2c 100644
--- a/drivers/video/backlight/ams369fg06.c
+++ b/drivers/video/backlight/ams369fg06.c
@@ -317,10 +317,7 @@ static int ams369fg06_power_on(struct ams369fg06 *lcd)
        pd = lcd->lcd_pd;
        bd = lcd->bd;
 
-       if (!pd->power_on) {
-               dev_err(lcd->dev, "power_on is NULL.\n");
-               return -EINVAL;
-       } else {
+       if (pd->power_on) {
                pd->power_on(lcd->ld, 1);
                msleep(pd->power_on_delay);
        }
@@ -370,7 +367,8 @@ static int ams369fg06_power_off(struct ams369fg06 *lcd)
 
        msleep(pd->power_off_delay);
 
-       pd->power_on(lcd->ld, 0);
+       if (pd->power_on)
+               pd->power_on(lcd->ld, 0);
 
        return 0;
 }
-- 
1.7.2.5


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