From 7c2fa3e56d95f6dba9cc705c8c815b530e2835a9 Mon Sep 17 00:00:00 2001
From: Sen Chu <sen.chu@mediatek.com>
Date: Thu, 18 May 2023 12:06:46 +0800
Subject: [PATCH] regulator: mt6359: add read check for PMIC MT6359
commit a511637502b1caa135046d0f8fdabd55a31af8ef upstream.
Add hardware version read check for PMIC MT6359
Signed-off-by: Sen Chu <sen.chu@mediatek.com
Fixes: 4cfc96547512 ("regulator: mt6359: Add support for MT6359P regulator")
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com
Link: https://lore.kernel.org/r/20230518040646.8730-1-sen.chu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/regulator/mt6359-regulator.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/regulator/mt6359-regulator.c b/drivers/regulator/mt6359-regulator.c
index de3b0462832cd..f94f87c5407ae 100644
--- a/drivers/regulator/mt6359-regulator.c
+++ b/drivers/regulator/mt6359-regulator.c
@@ -951,9 +951,12 @@ static int mt6359_regulator_probe(struct platform_device *pdev)
struct regulator_config config = {};
struct regulator_dev *rdev;
struct mt6359_regulator_info *mt6359_info;
- int i, hw_ver;
+ int i, hw_ver, ret;
+
+ ret = regmap_read(mt6397->regmap, MT6359P_HWCID, &hw_ver);
+ if (ret)
+ return ret;
- regmap_read(mt6397->regmap, MT6359P_HWCID, &hw_ver);
if (hw_ver >= MT6359P_CHIP_VER)
mt6359_info = mt6359p_regulators;
else