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

Use devm_*() functions to make cleanup paths simpler.

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>

1 files changed, 12 insertions, 31 deletions

diff --git a/drivers/rtc/rtc-pxa.c b/drivers/rtc/rtc-pxa.c
index ed037ae91c5f..a355f2b82bb8 100644
--- a/drivers/rtc/rtc-pxa.c
+++ b/drivers/rtc/rtc-pxa.c
@@ -324,37 +324,35 @@ static int __init pxa_rtc_probe(struct platform_device *pdev)
         int ret;
         u32 rttr;
 
-        pxa_rtc = kzalloc(sizeof(struct pxa_rtc), GFP_KERNEL);
+        pxa_rtc = devm_kzalloc(dev, sizeof(*pxa_rtc), GFP_KERNEL);
         if (!pxa_rtc)
                 return -ENOMEM;
 
         spin_lock_init(&pxa_rtc->lock);
         platform_set_drvdata(pdev, pxa_rtc);
 
-        ret = -ENXIO;
         pxa_rtc->ress = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         if (!pxa_rtc->ress) {
                 dev_err(dev, "No I/O memory resource defined\n");
-                goto err_ress;
+                return -ENXIO;
         }
 
         pxa_rtc->irq_1Hz = platform_get_irq(pdev, 0);
         if (pxa_rtc->irq_1Hz < 0) {
                 dev_err(dev, "No 1Hz IRQ resource defined\n");
-                goto err_ress;
+                return -ENXIO;
         }
         pxa_rtc->irq_Alrm = platform_get_irq(pdev, 1);
         if (pxa_rtc->irq_Alrm < 0) {
                 dev_err(dev, "No alarm IRQ resource defined\n");
-                goto err_ress;
+                return -ENXIO;
         }
         pxa_rtc_open(dev);
-        ret = -ENOMEM;
-        pxa_rtc->base = ioremap(pxa_rtc->ress->start,
+        pxa_rtc->base = devm_ioremap(dev, pxa_rtc->ress->start,
                                 resource_size(pxa_rtc->ress));
         if (!pxa_rtc->base) {
-                dev_err(&pdev->dev, "Unable to map pxa RTC I/O memory\n");
-                goto err_map;
+                dev_err(dev, "Unable to map pxa RTC I/O memory\n");
+                return -ENOMEM;
         }
 
         /*
@@ -370,41 +368,24 @@ static int __init pxa_rtc_probe(struct platform_device *pdev)
 
         rtsr_clear_bits(pxa_rtc, RTSR_PIALE | RTSR_RDALE1 | RTSR_HZE);
 
-        pxa_rtc->rtc = rtc_device_register("pxa-rtc", &pdev->dev, &pxa_rtc_ops,
-                                           THIS_MODULE);
-        ret = PTR_ERR(pxa_rtc->rtc);
+        pxa_rtc->rtc = devm_rtc_device_register(&pdev->dev, "pxa-rtc",
+                                                &pxa_rtc_ops, THIS_MODULE);
         if (IS_ERR(pxa_rtc->rtc)) {
+                ret = PTR_ERR(pxa_rtc->rtc);
                 dev_err(dev, "Failed to register RTC device -> %d\n", ret);
-                goto err_rtc_reg;
+                return ret;
         }
 
         device_init_wakeup(dev, 1);
 
         return 0;
-
-err_rtc_reg:
-         iounmap(pxa_rtc->base);
-err_ress:
-err_map:
-        kfree(pxa_rtc);
-        return ret;
 }
 
 static int __exit pxa_rtc_remove(struct platform_device *pdev)
 {
-        struct pxa_rtc *pxa_rtc = platform_get_drvdata(pdev);
-
         struct device *dev = &pdev->dev;
-        pxa_rtc_release(dev);
-
-        rtc_device_unregister(pxa_rtc->rtc);
-
-        spin_lock_irq(&pxa_rtc->lock);
-        iounmap(pxa_rtc->base);
-        spin_unlock_irq(&pxa_rtc->lock);
-
-        kfree(pxa_rtc);
 
+        pxa_rtc_release(dev);
         return 0;
 }