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drm/tegra: hdmi: Silence deferred-probe error

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Driver fails to probe with -EPROBE_DEFER, which produces a bit noisy error
message in KMSG during kernel's boot up. This happens because voltage
regulators tend to be probed later than the DRM driver.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Dmitry Osipenko 2020-03-12 18:04:32 +03:00 committed by Thierry Reding
parent 8f839fb6b3
commit e32c8c2a5f
1 changed files with 25 additions and 9 deletions
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34
drivers/gpu/drm/tegra/hdmi.c
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@ -1648,6 +1648,7 @@ static irqreturn_t tegra_hdmi_irq(int irq, void *data)
static int tegra_hdmi_probe(struct platform_device *pdev)
{
const char *level = KERN_ERR;
struct tegra_hdmi *hdmi;
struct resource *regs;
int err;
@ -1686,21 +1687,36 @@ static int tegra_hdmi_probe(struct platform_device *pdev)
}
hdmi->hdmi = devm_regulator_get(&pdev->dev, "hdmi");
if (IS_ERR(hdmi->hdmi)) {
dev_err(&pdev->dev, "failed to get HDMI regulator\n");
return PTR_ERR(hdmi->hdmi);
err = PTR_ERR_OR_ZERO(hdmi->hdmi);
if (err) {
if (err == -EPROBE_DEFER)
level = KERN_DEBUG;
dev_printk(level, &pdev->dev,
"failed to get HDMI regulator: %d\n", err);
return err;
}
hdmi->pll = devm_regulator_get(&pdev->dev, "pll");
if (IS_ERR(hdmi->pll)) {
dev_err(&pdev->dev, "failed to get PLL regulator\n");
return PTR_ERR(hdmi->pll);
err = PTR_ERR_OR_ZERO(hdmi->pll);
if (err) {
if (err == -EPROBE_DEFER)
level = KERN_DEBUG;
dev_printk(level, &pdev->dev,
"failed to get PLL regulator: %d\n", err);
return err;
}
hdmi->vdd = devm_regulator_get(&pdev->dev, "vdd");
if (IS_ERR(hdmi->vdd)) {
dev_err(&pdev->dev, "failed to get VDD regulator\n");
return PTR_ERR(hdmi->vdd);
err = PTR_ERR_OR_ZERO(hdmi->vdd);
if (err) {
if (err == -EPROBE_DEFER)
level = KERN_DEBUG;
dev_printk(level, &pdev->dev,
"failed to get VDD regulator: %d\n", err);
return err;
}
hdmi->output.dev = &pdev->dev;