From 3eabeebe835c63c9197b19fd723d684649b3dbbc Mon Sep 17 00:00:00 2001
From: Dmitry Osipenko <digetx@gmail.com>
Date: Mon, 9 Mar 2020 01:38:09 +0300
Subject: drm/tegra: dc: Silence RGB output deferred-probe error
Git-commit: 8f839fb6b39e74e60f772f60909be526f5835237
Patch-mainline: v5.7-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
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>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/tegra/dc.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 56d933e81797..1a7b08f35776 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -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;
}
--
2.28.0