regulator: ti-abb: Use devm_regulator_register

devm_* simplifies the code.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/drivers/regulator/ti-abb-regulator.c b/drivers/regulator/ti-abb-regulator.c
index d8e3e1262bc2960b4eebf89b5c552ef6e04df305..8c2a8195d8a7218441e0617183914d01696a380d 100644 (file)
--- a/drivers/regulator/ti-abb-regulator.c
+++ b/drivers/regulator/ti-abb-regulator.c
@@ -696,39 +696,31 @@ static int ti_abb_probe(struct platform_device *pdev)
        match = of_match_device(ti_abb_of_match, dev);
        if (!match) {
                /* We do not expect this to happen */
-               ret = -ENODEV;
                dev_err(dev, "%s: Unable to match device\n", __func__);
-               goto err;
+               return -ENODEV;
        }
        if (!match->data) {
-               ret = -EINVAL;
                dev_err(dev, "%s: Bad data in match\n", __func__);
-               goto err;
+               return -EINVAL;
        }
 
        abb = devm_kzalloc(dev, sizeof(struct ti_abb), GFP_KERNEL);
-       if (!abb) {
-               dev_err(dev, "%s: Unable to allocate ABB struct\n", __func__);
-               ret = -ENOMEM;
-               goto err;
-       }
+       if (!abb)
+               return -ENOMEM;
        abb->regs = match->data;
 
        /* Map ABB resources */
        pname = "base-address";
        res = platform_get_resource_byname(pdev, IORESOURCE_MEM, pname);
        abb->base = devm_ioremap_resource(dev, res);
-       if (IS_ERR(abb->base)) {
-               ret = PTR_ERR(abb->base);
-               goto err;
-       }
+       if (IS_ERR(abb->base))
+               return PTR_ERR(abb->base);
 
        pname = "int-address";
        res = platform_get_resource_byname(pdev, IORESOURCE_MEM, pname);
        if (!res) {
                dev_err(dev, "Missing '%s' IO resource\n", pname);
-               ret = -ENODEV;
-               goto err;
+               return -ENODEV;
        }
        /*
         * We may have shared interrupt register offsets which are
@@ -738,8 +730,7 @@ static int ti_abb_probe(struct platform_device *pdev)
                                             resource_size(res));
        if (!abb->int_base) {
                dev_err(dev, "Unable to map '%s'\n", pname);
-               ret = -ENOMEM;
-               goto err;
+               return -ENOMEM;
        }
 
        /* Map Optional resources */
@@ -759,17 +750,14 @@ static int ti_abb_probe(struct platform_device *pdev)
                                               resource_size(res));
        if (!abb->efuse_base) {
                dev_err(dev, "Unable to map '%s'\n", pname);
-               ret = -ENOMEM;
-               goto err;
+               return -ENOMEM;
        }
 
        pname = "ldo-address";
        res = platform_get_resource_byname(pdev, IORESOURCE_MEM, pname);
        abb->ldo_base = devm_ioremap_resource(dev, res);
-       if (IS_ERR(abb->ldo_base)) {
-               ret = PTR_ERR(abb->ldo_base);
-               goto err;
-       }
+       if (IS_ERR(abb->ldo_base))
+               return PTR_ERR(abb->ldo_base);
 
        /* IF ldo_base is set, the following are mandatory */
        pname = "ti,ldovbb-override-mask";
@@ -778,12 +766,11 @@ static int ti_abb_probe(struct platform_device *pdev)
                                 &abb->ldovbb_override_mask);
        if (ret) {
                dev_err(dev, "Missing '%s' (%d)\n", pname, ret);
-               goto err;
+               return ret;
        }
        if (!abb->ldovbb_override_mask) {
                dev_err(dev, "Invalid property:'%s' set as 0!\n", pname);
-               ret = -EINVAL;
-               goto err;
+               return -EINVAL;
        }
 
        pname = "ti,ldovbb-vset-mask";
@@ -792,12 +779,11 @@ static int ti_abb_probe(struct platform_device *pdev)
                                 &abb->ldovbb_vset_mask);
        if (ret) {
                dev_err(dev, "Missing '%s' (%d)\n", pname, ret);
-               goto err;
+               return ret;
        }
        if (!abb->ldovbb_vset_mask) {
                dev_err(dev, "Invalid property:'%s' set as 0!\n", pname);
-               ret = -EINVAL;
-               goto err;
+               return -EINVAL;
        }
 
 skip_opt:
@@ -807,31 +793,29 @@ skip_opt:
                                 &abb->txdone_mask);
        if (ret) {
                dev_err(dev, "Missing '%s' (%d)\n", pname, ret);
-               goto err;
+               return ret;
        }
        if (!abb->txdone_mask) {
                dev_err(dev, "Invalid property:'%s' set as 0!\n", pname);
-               ret = -EINVAL;
-               goto err;
+               return -EINVAL;
        }
 
        initdata = of_get_regulator_init_data(dev, pdev->dev.of_node);
        if (!initdata) {
-               ret = -ENOMEM;
                dev_err(dev, "%s: Unable to alloc regulator init data\n",
                        __func__);
-               goto err;
+               return -ENOMEM;
        }
 
        /* init ABB opp_sel table */
        ret = ti_abb_init_table(dev, abb, initdata);
        if (ret)
-               goto err;
+               return ret;
 
        /* init ABB timing */
        ret = ti_abb_init_timings(dev, abb);
        if (ret)
-               goto err;
+               return ret;
 
        desc = &abb->rdesc;
        desc->name = dev_name(dev);
@@ -849,12 +833,12 @@ skip_opt:
        config.driver_data = abb;
        config.of_node = pdev->dev.of_node;
 
-       rdev = regulator_register(desc, &config);
+       rdev = devm_regulator_register(dev, desc, &config);
        if (IS_ERR(rdev)) {
                ret = PTR_ERR(rdev);
                dev_err(dev, "%s: failed to register regulator(%d)\n",
                        __func__, ret);
-               goto err;
+               return ret;
        }
        platform_set_drvdata(pdev, rdev);
 
@@ -862,31 +846,12 @@ skip_opt:
        ti_abb_rmw(abb->regs->sr2_en_mask, 1, abb->regs->setup_reg, abb->base);
 
        return 0;
-
-err:
-       dev_err(dev, "%s: Failed to initialize(%d)\n", __func__, ret);
-       return ret;
-}
-
-/**
- * ti_abb_remove() - cleanups
- * @pdev: ABB platform device
- *
- * Return: 0
- */
-static int ti_abb_remove(struct platform_device *pdev)
-{
-       struct regulator_dev *rdev = platform_get_drvdata(pdev);
-
-       regulator_unregister(rdev);
-       return 0;
 }
 
 MODULE_ALIAS("platform:ti_abb");
 
 static struct platform_driver ti_abb_driver = {
        .probe = ti_abb_probe,
-       .remove = ti_abb_remove,
        .driver = {
                   .name = "ti_abb",
                   .owner = THIS_MODULE,