regulator: stw481x: Remove unused fields from struct stw481x

The mutex lock is not used at all, remove it.
The *vmmc_regulator is not necessary, use a local variable in
stw481x_vmmc_regulator_probe() instead.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

2 files changed, 4 insertions, 8 deletions

diff --git a/drivers/regulator/stw481x-vmmc.c b/drivers/regulator/stw481x-vmmc.c
index 89025f560259..7d2ae3e9e942 100644
--- a/drivers/regulator/stw481x-vmmc.c
+++ b/drivers/regulator/stw481x-vmmc.c
@@ -56,6 +56,7 @@ static int stw481x_vmmc_regulator_probe(struct platform_device *pdev)
 {
         struct stw481x *stw481x = dev_get_platdata(&pdev->dev);
         struct regulator_config config = { };
+        struct regulator_dev *rdev;
         int ret;
 
         /* First disable the external VMMC if it's active */
@@ -75,12 +76,11 @@ static int stw481x_vmmc_regulator_probe(struct platform_device *pdev)
                                                       pdev->dev.of_node,
                                                       &vmmc_regulator);
 
-        stw481x->vmmc_regulator = devm_regulator_register(&pdev->dev,
-                                                &vmmc_regulator, &config);
-        if (IS_ERR(stw481x->vmmc_regulator)) {
+        rdev = devm_regulator_register(&pdev->dev, &vmmc_regulator, &config);
+        if (IS_ERR(rdev)) {
                 dev_err(&pdev->dev,
                         "error initializing STw481x VMMC regulator\n");
-                return PTR_ERR(stw481x->vmmc_regulator);
+                return PTR_ERR(rdev);
         }
 
         dev_info(&pdev->dev, "initialized STw481x VMMC regulator\n");
diff --git a/include/linux/mfd/stw481x.h b/include/linux/mfd/stw481x.h
index eda121556e5d..833074b766bd 100644
--- a/include/linux/mfd/stw481x.h
+++ b/include/linux/mfd/stw481x.h
@@ -41,15 +41,11 @@
 
 /**
  * struct stw481x - state holder for the Stw481x drivers
- * @mutex: mutex to serialize I2C accesses
  * @i2c_client: corresponding I2C client
- * @regulator: regulator device for regulator children
  * @map: regmap handle to access device registers
  */
 struct stw481x {
-        struct mutex            lock;
         struct i2c_client       *client;
-        struct regulator_dev    *vmmc_regulator;
         struct regmap           *map;
 };