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Wed, 29 Apr 2026 00:41:40 -0700 (PDT) Received: from wenstp920.tpe.corp.google.com ([2a00:79e0:201d:8:e49b:67f9:cdcb:8366]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-364a439248fsm1341528a91.9.2026.04.29.00.41.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2026 00:41:39 -0700 (PDT) From: Chen-Yu Tsai To: Mark Brown , Liam Girdwood , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno Cc: Chen-Yu Tsai , linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH v2 4/6] regulator: mt6359: const-ify regulator descriptions Date: Wed, 29 Apr 2026 15:41:10 +0800 Message-ID: <20260429074113.3720271-5-wenst@chromium.org> X-Mailer: git-send-email 2.54.0.545.g6539524ca2-goog In-Reply-To: <20260429074113.3720271-1-wenst@chromium.org> References: <20260429074113.3720271-1-wenst@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260429_004141_520750_0E42B204 X-CRM114-Status: GOOD ( 18.10 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The regulator descriptions and extended descriptions don't change at runtime. The only reason they are not const is that the regulator driver data is non-const. Const-ify the descriptions and all references to them. For the driver data, explicitly cast it to non-const void *. Signed-off-by: Chen-Yu Tsai --- Changes since v1: - New patch This is included in the series as it touches the same context. drivers/regulator/mt6359-regulator.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/regulator/mt6359-regulator.c b/drivers/regulator/mt6359-regulator.c index c8a788858824..bcf9a476a34e 100644 --- a/drivers/regulator/mt6359-regulator.c +++ b/drivers/regulator/mt6359-regulator.c @@ -251,7 +251,7 @@ static int mt6359_get_status(struct regulator_dev *rdev) { int ret; u32 regval; - struct mt6359_regulator_info *info = rdev_get_drvdata(rdev); + const struct mt6359_regulator_info *info = rdev_get_drvdata(rdev); ret = regmap_read(rdev->regmap, info->status_reg, ®val); if (ret != 0) { @@ -267,7 +267,7 @@ static int mt6359_get_status(struct regulator_dev *rdev) static unsigned int mt6359_regulator_get_mode(struct regulator_dev *rdev) { - struct mt6359_regulator_info *info = rdev_get_drvdata(rdev); + const struct mt6359_regulator_info *info = rdev_get_drvdata(rdev); int ret, regval; ret = regmap_read(rdev->regmap, info->modeset_reg, ®val); @@ -299,7 +299,7 @@ static unsigned int mt6359_regulator_get_mode(struct regulator_dev *rdev) static int mt6359_regulator_set_mode(struct regulator_dev *rdev, unsigned int mode) { - struct mt6359_regulator_info *info = rdev_get_drvdata(rdev); + const struct mt6359_regulator_info *info = rdev_get_drvdata(rdev); int ret = 0, val; int curr_mode; @@ -354,7 +354,7 @@ static int mt6359_regulator_set_mode(struct regulator_dev *rdev, static int mt6359p_vemc_set_voltage_sel(struct regulator_dev *rdev, u32 sel) { - struct mt6359_regulator_info *info = rdev_get_drvdata(rdev); + const struct mt6359_regulator_info *info = rdev_get_drvdata(rdev); int ret; u32 val = 0; @@ -393,7 +393,7 @@ static int mt6359p_vemc_set_voltage_sel(struct regulator_dev *rdev, static int mt6359p_vemc_get_voltage_sel(struct regulator_dev *rdev) { - struct mt6359_regulator_info *info = rdev_get_drvdata(rdev); + const struct mt6359_regulator_info *info = rdev_get_drvdata(rdev); int ret; u32 val = 0; @@ -469,7 +469,7 @@ static const struct regulator_ops mt6359p_vemc_ops = { }; /* The array is indexed by id(MT6359_ID_XXX) */ -static struct mt6359_regulator_info mt6359_regulators[] = { +static const struct mt6359_regulator_info mt6359_regulators[] = { MT6359_BUCK("buck_vs1", VS1, 800000, 2200000, 12500, MT6359_RG_BUCK_VS1_EN_ADDR, MT6359_DA_VS1_EN_ADDR, MT6359_RG_BUCK_VS1_VOSEL_ADDR, @@ -705,7 +705,7 @@ static struct mt6359_regulator_info mt6359_regulators[] = { MT6359_RG_LDO_VSRAM_OTHERS_SSHUB_VOSEL_SHIFT), }; -static struct mt6359_regulator_info mt6359p_regulators[] = { +static const struct mt6359_regulator_info mt6359p_regulators[] = { MT6359_BUCK("buck_vs1", VS1, 800000, 2200000, 12500, MT6359_RG_BUCK_VS1_EN_ADDR, MT6359_DA_VS1_EN_ADDR, MT6359_RG_BUCK_VS1_VOSEL_ADDR, @@ -950,7 +950,7 @@ static int mt6359_regulator_probe(struct platform_device *pdev) struct mt6397_chip *mt6397 = dev_get_drvdata(pdev->dev.parent); struct regulator_config config = {}; struct regulator_dev *rdev; - struct mt6359_regulator_info *mt6359_info; + const struct mt6359_regulator_info *mt6359_info; int i, hw_ver, ret; ret = regmap_read(mt6397->regmap, MT6359P_HWCID, &hw_ver); @@ -965,7 +965,8 @@ static int mt6359_regulator_probe(struct platform_device *pdev) config.dev = mt6397->dev; config.regmap = mt6397->regmap; for (i = 0; i < MT6359_MAX_REGULATOR; i++, mt6359_info++) { - config.driver_data = mt6359_info; + /* drop const here, but all uses in the driver are const */ + config.driver_data = (void *)mt6359_info; rdev = devm_regulator_register(&pdev->dev, &mt6359_info->desc, &config); if (IS_ERR(rdev)) { dev_err(&pdev->dev, "failed to register %s\n", mt6359_info->desc.name); -- 2.54.0.545.g6539524ca2-goog