From: Fabio Estevam <fabio.estevam@xxxxxxx>
When enable_gpio is provided via an I2C or SPI expander, it may not be
available when panel-simple probes leading to the following error:
panel-simple panel: failed to request GPIO: -517
As this error message is not very useful to the end user, skip printing
it in the case of deferred probe.
Signed-off-by: Fabio Estevam <fabio.estevam@xxxxxxx>
---
drivers/gpu/drm/panel/panel-simple.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 474fa75..9469c4d 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -315,7 +315,8 @@ static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
GPIOD_OUT_LOW);
if (IS_ERR(panel->enable_gpio)) {
err = PTR_ERR(panel->enable_gpio);
- dev_err(dev, "failed to request GPIO: %d\n", err);
+ if (err != -EPROBE_DEFER)
+ dev_err(dev, "failed to request GPIO: %d\n", err);
return err;
}
--
2.7.4
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