linux-kernel - [PATCH v1] power: supply: bq27xxx_battery: Silence deferred-probe error

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Message-Id: <20200308215143.27823-1-digetx@gmail.com>
Date:   Mon,  9 Mar 2020 00:51:43 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     "Andrew F. Davis" <afd@...com>,
        Pali Rohár <pali.rohar@...il.com>,
        Sebastian Reichel <sre@...nel.org>,
        David Heidelberg <david@...t.cz>
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1] power: supply: bq27xxx_battery: Silence deferred-probe error

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>
---
 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 195c18c2f426..664e50103eaa 100644
--- a/drivers/power/supply/bq27xxx_battery.c
+++ b/drivers/power/supply/bq27xxx_battery.c
@@ -1885,7 +1885,10 @@ 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);
 	}
 
-- 
2.25.1