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@gmail.com>
Reviewed-by: Andrew F. Davis <afd@ti.com>
Reviewed-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c
index 195c18c..664e501 100644 (file)
--- 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);
        }