1 files changed, 10 insertions, 57 deletions

diff --git a/drivers/watchdog/ts72xx_wdt.c b/drivers/watchdog/ts72xx_wdt.c
index b8a92459f10f..4da59b4d73f0 100644
--- a/drivers/watchdog/ts72xx_wdt.c
+++ b/drivers/watchdog/ts72xx_wdt.c
@@ -396,7 +396,7 @@ static int ts72xx_wdt_probe(struct platform_device *pdev)
         struct resource *r1, *r2;
         int error = 0;
 
-        wdt = kzalloc(sizeof(struct ts72xx_wdt), GFP_KERNEL);
+        wdt = devm_kzalloc(&pdev->dev, sizeof(struct ts72xx_wdt), GFP_KERNEL);
         if (!wdt) {
                 dev_err(&pdev->dev, "failed to allocate memory\n");
                 return -ENOMEM;
@@ -405,44 +405,22 @@ static int ts72xx_wdt_probe(struct platform_device *pdev)
         r1 = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         if (!r1) {
                 dev_err(&pdev->dev, "failed to get memory resource\n");
-                error = -ENODEV;
-                goto fail;
+                return -ENODEV;
         }
 
-        r1 = request_mem_region(r1->start, resource_size(r1), pdev->name);
-        if (!r1) {
-                dev_err(&pdev->dev, "cannot request memory region\n");
-                error = -EBUSY;
-                goto fail;
-        }
-
-        wdt->control_reg = ioremap(r1->start, resource_size(r1));
-        if (!wdt->control_reg) {
-                dev_err(&pdev->dev, "failed to map memory\n");
-                error = -ENODEV;
-                goto fail_free_control;
-        }
+        wdt->control_reg = devm_ioremap_resource(&pdev->dev, r1);
+        if (IS_ERR(wdt->control_reg))
+                return PTR_ERR(wdt->control_reg);
 
         r2 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
         if (!r2) {
                 dev_err(&pdev->dev, "failed to get memory resource\n");
-                error = -ENODEV;
-                goto fail_unmap_control;
-        }
-
-        r2 = request_mem_region(r2->start, resource_size(r2), pdev->name);
-        if (!r2) {
-                dev_err(&pdev->dev, "cannot request memory region\n");
-                error = -EBUSY;
-                goto fail_unmap_control;
+                return -ENODEV;
         }
 
-        wdt->feed_reg = ioremap(r2->start, resource_size(r2));
-        if (!wdt->feed_reg) {
-                dev_err(&pdev->dev, "failed to map memory\n");
-                error = -ENODEV;
-                goto fail_free_feed;
-        }
+        wdt->feed_reg = devm_ioremap_resource(&pdev->dev, r2);
+        if (IS_ERR(wdt->feed_reg))
+                return PTR_ERR(wdt->feed_reg);
 
         platform_set_drvdata(pdev, wdt);
         ts72xx_wdt_pdev = pdev;
@@ -455,45 +433,20 @@ static int ts72xx_wdt_probe(struct platform_device *pdev)
         error = misc_register(&ts72xx_wdt_miscdev);
         if (error) {
                 dev_err(&pdev->dev, "failed to register miscdev\n");
-                goto fail_unmap_feed;
+                return error;
         }
 
         dev_info(&pdev->dev, "TS-72xx Watchdog driver\n");
 
         return 0;
-
-fail_unmap_feed:
-        platform_set_drvdata(pdev, NULL);
-        iounmap(wdt->feed_reg);
-fail_free_feed:
-        release_mem_region(r2->start, resource_size(r2));
-fail_unmap_control:
-        iounmap(wdt->control_reg);
-fail_free_control:
-        release_mem_region(r1->start, resource_size(r1));
-fail:
-        kfree(wdt);
-        return error;
 }
 
 static int ts72xx_wdt_remove(struct platform_device *pdev)
 {
-        struct ts72xx_wdt *wdt = platform_get_drvdata(pdev);
-        struct resource *res;
         int error;
 
         error = misc_deregister(&ts72xx_wdt_miscdev);
-        platform_set_drvdata(pdev, NULL);
-
-        iounmap(wdt->feed_reg);
-        res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-        release_mem_region(res->start, resource_size(res));
-
-        iounmap(wdt->control_reg);
-        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        release_mem_region(res->start, resource_size(res));
 
-        kfree(wdt);
         return error;
 }