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kernel: make 'no port node found' output a debug message

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There are cases where an unavailable port is not an error, making
this error message a false-positive. The kernel log is flooded with
the messages like:
  OF: graph: no port node found in /soc@0/bus@42000000/i2c@42530000/usb-typec@50

Silence this message by making it a debug message.

Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit 17ea41eabb)
This commit is contained in:
Tianling Shen 2024-09-27 15:54:04 +08:00
parent 5637dd20a4
commit e1d143ce7e
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1 changed files with 33 additions and 0 deletions
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target/linux/generic/backport-5.15/829-v6.9-of-property-Make-no-port-node-found-output-a-debug.patch Normal file
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@ -0,0 +1,33 @@
From e20cd62b1f1708a4dec7ff4beb9e748a0bdb5716 Mon Sep 17 00:00:00 2001
From: Alexander Stein <alexander.stein@ew.tq-group.com>
Date: Wed, 17 Jan 2024 09:32:06 +0100
Subject: [PATCH] of: property: Make 'no port node found' output a debug
message
There are cases where an unavailable port is not an error, making this
error message a false-positive. Since commit d56de8c9a17d8 ("usb: typec:
tcpm: try to get role switch from tcpc fwnode") the role switch is tried
on the port dev first and tcpc fwnode afterwards. If using the latter
bindings getting from port dev fails every time. The kernel log is flooded
with the messages like:
OF: graph: no port node found in /soc@0/bus@42000000/i2c@42530000/usb-typec@50
Silence this message by making it a debug message.
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/r/20240117083206.2901534-1-alexander.stein@ew.tq-group.com
Signed-off-by: Rob Herring <robh@kernel.org>
---
drivers/of/property.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -660,7 +660,7 @@ struct device_node *of_graph_get_next_en
of_node_put(node);
if (!port) {
- pr_err("graph: no port node found in %pOF\n", parent);
+ pr_debug("graph: no port node found in %pOF\n", parent);
return NULL;
}
} else {