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drm/panel: simple: Skip error message on deferred probe

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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@nxp.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1498857286-10820-1-git-send-email-festevam@gmail.com
This commit is contained in:
Fabio Estevam 2017-06-30 18:14:46 -03:00 committed by Thierry Reding
parent 2a05177dac
commit b8e9380791
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/panel/panel-simple.c
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@ -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;
}