In the probe path, dev_err() can be replaced with dev_err_probe()
which will check if error code is -EPROBE_DEFER and prints the
error name. It also sets the defer probe reason which can be
checked later through debugfs.
Signed-off-by: Yuan Can <yuan...@huawei.com>
Reviewed-by: Douglas Anderson <diand...@chromium.org>
---
drivers/gpu/drm/panel/panel-simple.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-simple.c
b/drivers/gpu/drm/panel/panel-simple.c
index 0cb3be26e2e6..1607824dc2b3 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -575,12 +575,9 @@ static int panel_simple_probe(struct device *dev, const
struct panel_desc *desc)
panel->enable_gpio = devm_gpiod_get_optional(dev, "enable",
GPIOD_OUT_LOW);
- if (IS_ERR(panel->enable_gpio)) {
- err = PTR_ERR(panel->enable_gpio);
- if (err != -EPROBE_DEFER)
- dev_err(dev, "failed to request GPIO: %d\n", err);
- return err;
- }
+ if (IS_ERR(panel->enable_gpio))
+ return dev_err_probe(dev, PTR_ERR(panel->enable_gpio),
+ "failed to request GPIO\n");
err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation);
if (err) {
--
2.17.1
