rtc: rtc-vt8500: use devm_*() functions

Use devm_*() functions to make cleanup paths more simple.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/rtc/rtc-vt8500.c b/drivers/rtc/rtc-vt8500.c
index 2730533e2d2df2da9417882fb6891b5a65a17a1f..a000bc0a8bffdbf3bc8e61a05ebd2ec44c340eaa 100644 (file)
--- a/drivers/rtc/rtc-vt8500.c
+++ b/drivers/rtc/rtc-vt8500.c
@@ -231,20 +231,21 @@ static int vt8500_rtc_probe(struct platform_device *pdev)
                return -ENXIO;
        }
 
-       vt8500_rtc->res = request_mem_region(vt8500_rtc->res->start,
-                                            resource_size(vt8500_rtc->res),
-                                            "vt8500-rtc");
+       vt8500_rtc->res = devm_request_mem_region(&pdev->dev,
+                                       vt8500_rtc->res->start,
+                                       resource_size(vt8500_rtc->res),
+                                       "vt8500-rtc");
        if (vt8500_rtc->res == NULL) {
                dev_err(&pdev->dev, "failed to request I/O memory\n");
                return -EBUSY;
        }
 
-       vt8500_rtc->regbase = ioremap(vt8500_rtc->res->start,
+       vt8500_rtc->regbase = devm_ioremap(&pdev->dev, vt8500_rtc->res->start,
                                      resource_size(vt8500_rtc->res));
        if (!vt8500_rtc->regbase) {
                dev_err(&pdev->dev, "Unable to map RTC I/O memory\n");
                ret = -EBUSY;
-               goto err_release;
+               goto err_return;
        }
 
        /* Enable RTC and set it to 24-hour mode */
@@ -257,11 +258,11 @@ static int vt8500_rtc_probe(struct platform_device *pdev)
                ret = PTR_ERR(vt8500_rtc->rtc);
                dev_err(&pdev->dev,
                        "Failed to register RTC device -> %d\n", ret);
-               goto err_unmap;
+               goto err_return;
        }
 
-       ret = request_irq(vt8500_rtc->irq_alarm, vt8500_rtc_irq, 0,
-                         "rtc alarm", vt8500_rtc);
+       ret = devm_request_irq(&pdev->dev, vt8500_rtc->irq_alarm,
+                               vt8500_rtc_irq, 0, "rtc alarm", vt8500_rtc);
        if (ret < 0) {
                dev_err(&pdev->dev, "can't get irq %i, err %d\n",
                        vt8500_rtc->irq_alarm, ret);
@@ -272,11 +273,7 @@ static int vt8500_rtc_probe(struct platform_device *pdev)
 
 err_unreg:
        rtc_device_unregister(vt8500_rtc->rtc);
-err_unmap:
-       iounmap(vt8500_rtc->regbase);
-err_release:
-       release_mem_region(vt8500_rtc->res->start,
-                          resource_size(vt8500_rtc->res));
+err_return:
        return ret;
 }
 
@@ -284,15 +281,10 @@ static int vt8500_rtc_remove(struct platform_device *pdev)
 {
        struct vt8500_rtc *vt8500_rtc = platform_get_drvdata(pdev);
 
-       free_irq(vt8500_rtc->irq_alarm, vt8500_rtc);
-
        rtc_device_unregister(vt8500_rtc->rtc);
 
        /* Disable alarm matching */
        writel(0, vt8500_rtc->regbase + VT8500_RTC_IS);
-       iounmap(vt8500_rtc->regbase);
-       release_mem_region(vt8500_rtc->res->start,
-                          resource_size(vt8500_rtc->res));
 
        platform_set_drvdata(pdev, NULL);