jz4740-battery: Use devm_request_and_ioremap

No functional changes. Just a cleanup.

Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>

1 files changed, 6 insertions, 27 deletions

diff --git a/drivers/power/jz4740-battery.c b/drivers/power/jz4740-battery.c
index 529d22abe0e..fc7550d4d56 100644
--- a/drivers/power/jz4740-battery.c
+++ b/drivers/power/jz4740-battery.c
@@ -33,7 +33,6 @@ struct jz_battery {
         struct jz_battery_platform_data *pdata;
         struct platform_device *pdev;
 
-        struct resource *mem;
         void __iomem *base;
 
         int irq;
@@ -244,6 +243,7 @@ static int __devinit jz_battery_probe(struct platform_device *pdev)
         struct jz_battery_platform_data *pdata = pdev->dev.parent->platform_data;
         struct jz_battery *jz_battery;
         struct power_supply *battery;
+        struct resource *mem;
 
         if (!pdata) {
                 dev_err(&pdev->dev, "No platform_data supplied\n");
@@ -264,26 +264,11 @@ static int __devinit jz_battery_probe(struct platform_device *pdev)
                 return jz_battery->irq;
         }
 
-        jz_battery->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        if (!jz_battery->mem) {
-                dev_err(&pdev->dev, "Failed to get platform mmio resource\n");
-                return -ENOENT;
-        }
+        mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
-        jz_battery->mem = request_mem_region(jz_battery->mem->start,
-                                resource_size(jz_battery->mem), pdev->name);
-        if (!jz_battery->mem) {
-                dev_err(&pdev->dev, "Failed to request mmio memory region\n");
+        jz_battery->base = devm_request_and_ioremap(&pdev->dev, mem);
+        if (!jz_battery->base)
                 return -EBUSY;
-        }
-
-        jz_battery->base = ioremap_nocache(jz_battery->mem->start,
-                                resource_size(jz_battery->mem));
-        if (!jz_battery->base) {
-                ret = -EBUSY;
-                dev_err(&pdev->dev, "Failed to ioremap mmio memory\n");
-                goto err_release_mem_region;
-        }
 
         battery = &jz_battery->battery;
         battery->name = pdata->info.name;
@@ -306,7 +291,7 @@ static int __devinit jz_battery_probe(struct platform_device *pdev)
                         jz_battery);
         if (ret) {
                 dev_err(&pdev->dev, "Failed to request irq %d\n", ret);
-                goto err_iounmap;
+                goto err;
         }
         disable_irq(jz_battery->irq);
 
@@ -363,11 +348,8 @@ err_free_gpio:
                 gpio_free(jz_battery->pdata->gpio_charge);
 err_free_irq:
         free_irq(jz_battery->irq, jz_battery);
-err_iounmap:
+err:
         platform_set_drvdata(pdev, NULL);
-        iounmap(jz_battery->base);
-err_release_mem_region:
-        release_mem_region(jz_battery->mem->start, resource_size(jz_battery->mem));
         return ret;
 }
 
@@ -387,9 +369,6 @@ static int __devexit jz_battery_remove(struct platform_device *pdev)
 
         free_irq(jz_battery->irq, jz_battery);
 
-        iounmap(jz_battery->base);
-        release_mem_region(jz_battery->mem->start, resource_size(jz_battery->mem));
-
         return 0;
 }