linux-kernel - [PATCH] driver core: silence device link messages unless debugging

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Date:   Fri, 21 Dec 2018 17:23:41 +0100
From:   Jerome Brunet <jbrunet@...libre.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Jerome Brunet <jbrunet@...libre.com>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        linux-kernel@...r.kernel.org, linux-amlogic@...ts.infradead.org
Subject: [PATCH] driver core: silence device link messages unless debugging

On platforms making a fair use of regulators, the dev_info() messages
coming from the device link function are a bit too verbose. The amount
of message will increase further with the clock framework joining the
device link party.

These messages looks valuable for people debugging device link related
issues, so dev_dbg() looks more appropriate than dev_info().

Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
---
 drivers/base/core.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 04bbcd779e11..8d330f921ad7 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -301,7 +301,7 @@ struct device_link *device_link_add(struct device *consumer,
 	list_add_tail_rcu(&link->s_node, &supplier->links.consumers);
 	list_add_tail_rcu(&link->c_node, &consumer->links.suppliers);
 
-	dev_info(consumer, "Linked as a consumer to %s\n", dev_name(supplier));
+	dev_dbg(consumer, "Linked as a consumer to %s\n", dev_name(supplier));
 
  out:
 	device_pm_unlock();
@@ -327,8 +327,8 @@ static void __device_link_del(struct kref *kref)
 {
 	struct device_link *link = container_of(kref, struct device_link, kref);
 
-	dev_info(link->consumer, "Dropping the link to %s\n",
-		 dev_name(link->supplier));
+	dev_dbg(link->consumer, "Dropping the link to %s\n",
+		dev_name(link->supplier));
 
 	if (link->flags & DL_FLAG_PM_RUNTIME)
 		pm_runtime_drop_link(link->consumer);
-- 
2.19.2