linux-kernel - [PATCH] soc: imx: gpcv2: print errno for regulator errors

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Message-Id: <20220609094453.2120099-1-martin.kepplinger@puri.sm>
Date:   Thu,  9 Jun 2022 11:44:53 +0200
From:   Martin Kepplinger <martin.kepplinger@...i.sm>
To:     shawnguo@...nel.org, s.hauer@...gutronix.de, festevam@...il.com
Cc:     kernel@...gutronix.de, kernel@...i.sm, linux-imx@....com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Martin Kepplinger <martin.kepplinger@...i.sm>
Subject: [PATCH] soc: imx: gpcv2: print errno for regulator errors

Make debugging of power management issues easier by printing the reason
why a regulator fails to be enabled or disabled.

Signed-off-by: Martin Kepplinger <martin.kepplinger@...i.sm>
---
 drivers/soc/imx/gpcv2.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/imx/gpcv2.c b/drivers/soc/imx/gpcv2.c
index 3cb123016b3e..311507a815c5 100644
--- a/drivers/soc/imx/gpcv2.c
+++ b/drivers/soc/imx/gpcv2.c
@@ -233,7 +233,8 @@ static int imx_pgc_power_up(struct generic_pm_domain *genpd)
 	if (!IS_ERR(domain->regulator)) {
 		ret = regulator_enable(domain->regulator);
 		if (ret) {
-			dev_err(domain->dev, "failed to enable regulator\n");
+			dev_err(domain->dev, "failed to enable regulator: %d\n",
+				ret);
 			goto out_put_pm;
 		}
 	}
@@ -372,7 +373,8 @@ static int imx_pgc_power_down(struct generic_pm_domain *genpd)
 	if (!IS_ERR(domain->regulator)) {
 		ret = regulator_disable(domain->regulator);
 		if (ret) {
-			dev_err(domain->dev, "failed to disable regulator\n");
+			dev_err(domain->dev,
+				"failed to disable regulator: %d\n", ret);
 			return ret;
 		}
 	}
-- 
2.30.2