openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/panel: simple: Use devm_gpiod_get_optional() 

Use the new devm_gpiod_get_optional() to simplify the probe code.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Alexandre Courbot 2014-07-25 23:47:25 +09:00 committed by Thierry Reding
parent 77df01dcd3
commit 9746c61960
1 changed files with 5 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/gpu/drm/panel/panel-simple.c
View File

@ -247,16 +247,14 @@ static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
if (IS_ERR(panel->supply))
return PTR_ERR(panel->supply);
panel->enable_gpio = devm_gpiod_get(dev, "enable");
panel->enable_gpio = devm_gpiod_get_optional(dev, "enable");
if (IS_ERR(panel->enable_gpio)) {
err = PTR_ERR(panel->enable_gpio);
if (err != -ENOENT) {
dev_err(dev, "failed to request GPIO: %d\n", err);
return err;
}
dev_err(dev, "failed to request GPIO: %d\n", err);
return err;
}
panel->enable_gpio = NULL;
} else {
if (panel->enable_gpio) {
err = gpiod_direction_output(panel->enable_gpio, 0);
if (err < 0) {
dev_err(dev, "failed to setup GPIO: %d\n", err);