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drm/tegra: dc: Silence RGB output deferred-probe error

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Driver fails to probe with -EPROBE_DEFER if display output isn't ready
yet. This produces a bit noisy error message in KMSG during kernel's boot
up on Tegra20 and Tegra30 because RGB output tends to be probed earlier
than a corresponding voltage regulator driver.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Dmitry Osipenko 2020-03-09 01:38:09 +03:00 • committed by Thierry Reding
parent 0411ea89a6
commit 8f839fb6b3
1 changed files with 7 additions and 1 deletions
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8
drivers/gpu/drm/tegra/dc.c
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@ -2571,7 +2571,13 @@ static int tegra_dc_probe(struct platform_device *pdev)
err = tegra_dc_rgb_probe(dc);
if (err < 0 && err != -ENODEV) {
dev_err(&pdev->dev, "failed to probe RGB output: %d\n", err);
const char *level = KERN_ERR;
if (err == -EPROBE_DEFER)
level = KERN_DEBUG;
dev_printk(level, dc->dev, "failed to probe RGB output: %d\n",
err);
return err;
}