linux-kernel - [PATCH] regulator: fixed: use dev_err

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Date:   Wed, 16 Jun 2021 14:53:31 +0200
From:   Rouven Czerwinski <r.czerwinski@...gutronix.de>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>
Cc:     kernel@...gutronix.de,
        Rouven Czerwinski <r.czerwinski@...gutronix.de>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] regulator: fixed: use dev_err_probe for gpio

Instead of returning the the PTR_ERR directly, use dev_err_probe which
will also correctly set the deferred probe reason in
/sys/kernel/debug/deferred_devices, making it easier to debug missing
devices on the system.

Signed-off-by: Rouven Czerwinski <r.czerwinski@...gutronix.de>
---
 drivers/regulator/fixed.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index 02ad83153e19..78f3a938b39b 100644
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -271,7 +271,8 @@ static int reg_fixed_voltage_probe(struct platform_device *pdev)
 	 */
 	cfg.ena_gpiod = gpiod_get_optional(&pdev->dev, NULL, gflags);
 	if (IS_ERR(cfg.ena_gpiod))
-		return PTR_ERR(cfg.ena_gpiod);
+		return dev_err_probe(&pdev->dev, PTR_ERR(cfg.ena_gpiod),
+				     "can't get GPIO\n");
 
 	cfg.dev = &pdev->dev;
 	cfg.init_data = config->init_data;
-- 
2.31.1