mfd: da9052: Fix broken regulator probe

Fix broken probe of da9052 regulators, which since commit b3f6c73db732
("mfd: da9052-core: Fix platform-device id collision") use a
non-deterministic platform-device id to retrieve static regulator
information. Fortunately, adequate error handling was in place so probe
would simply fail with an error message.

Update the mfd-cell ids to be zero-based and use those to identify the
cells when probing the regulator devices.

Fixes: b3f6c73db732 ("mfd: da9052-core: Fix platform-device id collision")
Cc: stable <stable@vger.kernel.org>	# v3.19
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/mfd/da9052-core.c b/drivers/mfd/da9052-core.c
index ae498b5..46e3840 100644 (file)
--- a/drivers/mfd/da9052-core.c
+++ b/drivers/mfd/da9052-core.c
@@ -431,6 +431,10 @@ int da9052_adc_read_temp(struct da9052 *da9052)
 EXPORT_SYMBOL_GPL(da9052_adc_read_temp);
 
 static const struct mfd_cell da9052_subdev_info[] = {
+       {
+               .name = "da9052-regulator",
+               .id = 0,
+       },
        {
                .name = "da9052-regulator",
                .id = 1,
@@ -483,10 +487,6 @@ static const struct mfd_cell da9052_subdev_info[] = {
                .name = "da9052-regulator",
                .id = 13,
        },
-       {
-               .name = "da9052-regulator",
-               .id = 14,
-       },
        {
                .name = "da9052-onkey",
        },

diff --git a/drivers/regulator/da9052-regulator.c b/drivers/regulator/da9052-regulator.c
index 8a4df7a..e628d4c 100644 (file)
--- a/drivers/regulator/da9052-regulator.c
+++ b/drivers/regulator/da9052-regulator.c
@@ -394,6 +394,7 @@ static inline struct da9052_regulator_info *find_regulator_info(u8 chip_id,
 
 static int da9052_regulator_probe(struct platform_device *pdev)
 {
+       const struct mfd_cell *cell = mfd_get_cell(pdev);
        struct regulator_config config = { };
        struct da9052_regulator *regulator;
        struct da9052 *da9052;
@@ -409,7 +410,7 @@ static int da9052_regulator_probe(struct platform_device *pdev)
        regulator->da9052 = da9052;
 
        regulator->info = find_regulator_info(regulator->da9052->chip_id,
-                                             pdev->id);
+                                             cell->id);
        if (regulator->info == NULL) {
                dev_err(&pdev->dev, "invalid regulator ID specified\n");
                return -EINVAL;
@@ -419,7 +420,7 @@ static int da9052_regulator_probe(struct platform_device *pdev)
        config.driver_data = regulator;
        config.regmap = da9052->regmap;
        if (pdata && pdata->regulators) {
-               config.init_data = pdata->regulators[pdev->id];
+               config.init_data = pdata->regulators[cell->id];
        } else {
 #ifdef CONFIG_OF
                struct device_node *nproot = da9052->dev->of_node;