linux-kernel - [PATCHv3 13/14] power: supply: generic-adc-battery: improve error message

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Date:   Fri, 17 Mar 2023 23:57:06 +0100
From:   Sebastian Reichel <sre@...nel.org>
To:     Sebastian Reichel <sre@...nel.org>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Matti Vaittinen <mazziesaccount@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: [PATCHv3 13/14] power: supply: generic-adc-battery: improve error message

Add device context and error code to the error messages to make it
useful.

Signed-off-by: Sebastian Reichel <sre@...nel.org>
---
 drivers/power/supply/generic-adc-battery.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/power/supply/generic-adc-battery.c b/drivers/power/supply/generic-adc-battery.c
index df1c0a1c6b52..2fa946c93fb4 100644
--- a/drivers/power/supply/generic-adc-battery.c
+++ b/drivers/power/supply/generic-adc-battery.c
@@ -92,7 +92,7 @@ static int read_channel(struct gab *adc_bat, enum gab_chan_type channel,
 
 	ret = iio_read_channel_processed(adc_bat->channel[channel], result);
 	if (ret < 0)
-		pr_err("read channel error\n");
+		dev_err(&adc_bat->psy->dev, "read channel error: %d\n", ret);
 	else
 		*result *= 1000;
 
-- 
2.39.2