linux-kernel - [PATCH AUTOSEL 4.9 02/21] power: supply: bq27xxx

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20200415114748.15713-2-sashal@kernel.org>
Date:   Wed, 15 Apr 2020 07:47:29 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Dmitry Osipenko <digetx@...il.com>,
        "Andrew F . Davis" <afd@...com>,
        Pali Rohár <pali@...nel.org>,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        Sasha Levin <sashal@...nel.org>, linux-pm@...r.kernel.org
Subject: [PATCH AUTOSEL 4.9 02/21] power: supply: bq27xxx_battery: Silence deferred-probe error

From: Dmitry Osipenko <digetx@...il.com>

[ Upstream commit 583b53ece0b0268c542a1eafadb62e3d4b0aab8c ]

The driver fails to probe with -EPROBE_DEFER if battery's power supply
(charger driver) isn't ready yet and this results in a bit noisy error
message in KMSG during kernel's boot up. Let's silence the harmless
error message.

Signed-off-by: Dmitry Osipenko <digetx@...il.com>
Reviewed-by: Andrew F. Davis <afd@...com>
Reviewed-by: Pali Rohár <pali@...nel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/power/supply/bq27xxx_battery.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c
index bccb3f595ff3d..247be9155694f 100644
--- a/drivers/power/supply/bq27xxx_battery.c
+++ b/drivers/power/supply/bq27xxx_battery.c
@@ -1031,7 +1031,10 @@ int bq27xxx_battery_setup(struct bq27xxx_device_info *di)
 
 	di->bat = power_supply_register_no_ws(di->dev, psy_desc, &psy_cfg);
 	if (IS_ERR(di->bat)) {
-		dev_err(di->dev, "failed to register battery\n");
+		if (PTR_ERR(di->bat) == -EPROBE_DEFER)
+			dev_dbg(di->dev, "failed to register battery, deferring probe\n");
+		else
+			dev_err(di->dev, "failed to register battery\n");
 		return PTR_ERR(di->bat);
 	}
 
-- 
2.20.1