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From:   Mateusz Majewski <m.majewski2@samsung.com>
To:     linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Cc:     Mateusz Majewski <m.majewski2@samsung.com>,
        Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Daniel Lezcano <daniel.lezcano@linaro.org>,
        Amit Kucheria <amitk@kernel.org>,
        Zhang Rui <rui.zhang@intel.com>,
        Alim Akhtar <alim.akhtar@samsung.com>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Marek Szyprowski <m.szyprowski@samsung.com>
Subject: [PATCH v3 4/8] thermal: exynos: handle devm_regulator_get_optional
 return value correctly
Date:   Tue,  3 Oct 2023 13:16:30 +0200
Message-ID: <20231003111638.241542-5-m.majewski2@samsung.com>
In-Reply-To: <20231003111638.241542-1-m.majewski2@samsung.com>
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References: <20231003111638.241542-1-m.majewski2@samsung.com>
        <CGME20231003111709eucas1p21f2d28615faab2f4aa4d9a264cf7f54f@eucas1p2.samsung.com>
Precedence: bulk

Currently, if regulator is required in the SoC, but
devm_regulator_get_optional fails for whatever reason, the execution
will proceed without propagating the error.

Signed-off-by: Mateusz Majewski <m.majewski2@samsung.com>
---
 drivers/thermal/samsung/exynos_tmu.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 0e970638193d..6070b03cff9d 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -1002,9 +1002,17 @@ static int exynos_tmu_probe(struct platform_device *pdev)
 			return ret;
 		}
 	} else {
-		if (PTR_ERR(data->regulator) == -EPROBE_DEFER)
+		ret = PTR_ERR(data->regulator);
+		switch (ret) {
+		case -ENODEV:
+			break;
+		case -EPROBE_DEFER:
 			return -EPROBE_DEFER;
-		dev_info(&pdev->dev, "Regulator node (vtmu) not found\n");
+		default:
+			dev_err(&pdev->dev, "Failed to get regulator: %d\n",
+				ret);
+			return ret;
+		}
 	}
 
 	ret = exynos_map_dt_data(pdev);
-- 
2.42.0