[PATCH 05/10] drm: panel-simple: use of_get_i2c_adapter_by_node interface

[Vladimir Zapolskiy]

This change is needed to properly lock I2C bus driver, which serves DDC.

On release of_get_i2c_adapter_by_node() requires i2c_put_adapter() call,
which replaces put_device().

Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy at mentor.com>
---
 drivers/gpu/drm/panel/panel-simple.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-simple.c 
b/drivers/gpu/drm/panel/panel-simple.c
index f94201b..b8a8b23 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -313,7 +313,7 @@ static int panel_simple_probe(struct device *dev, const 
struct panel_desc *desc)

        ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0);
        if (ddc) {
-               panel->ddc = of_find_i2c_adapter_by_node(ddc);
+               panel->ddc = of_get_i2c_adapter_by_node(ddc);
                of_node_put(ddc);

                if (!panel->ddc) {
@@ -335,8 +335,8 @@ static int panel_simple_probe(struct device *dev, const 
struct panel_desc *desc)
        return 0;

 free_ddc:
-       if (panel->ddc)
-               put_device(&panel->ddc->dev);
+       i2c_put_adapter(panel->ddc);
+
 free_backlight:
        if (panel->backlight)
                put_device(&panel->backlight->dev);
@@ -353,8 +353,7 @@ static int panel_simple_remove(struct device *dev)

        panel_simple_disable(&panel->base);

-       if (panel->ddc)
-               put_device(&panel->ddc->dev);
+       i2c_put_adapter(panel->ddc);

        if (panel->backlight)
                put_device(&panel->backlight->dev);
-- 
2.1.4