rtc: lpc32xx: convert to devm_rtc_allocate_device

This allows further improvement of the driver.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/rtc/rtc-lpc32xx.c b/drivers/rtc/rtc-lpc32xx.c
index 910e600..295dc6d 100644 (file)
--- a/drivers/rtc/rtc-lpc32xx.c
+++ b/drivers/rtc/rtc-lpc32xx.c
@@ -47,8 +47,6 @@
 
 #define LPC32XX_RTC_KEY_ONSW_LOADVAL   0xB5C13F27
 
-#define RTC_NAME "rtc-lpc32xx"
-
 #define rtc_readl(dev, reg) \
        __raw_readl((dev)->rtc_base + (reg))
 #define rtc_writel(dev, reg, val) \
@@ -201,7 +199,7 @@ static int lpc32xx_rtc_probe(struct platform_device *pdev)
 {
        struct resource *res;
        struct lpc32xx_rtc *rtc;
-       int rtcirq;
+       int rtcirq, err;
        u32 tmp;
 
        rtcirq = platform_get_irq(pdev, 0);
@@ -256,12 +254,15 @@ static int lpc32xx_rtc_probe(struct platform_device *pdev)
 
        platform_set_drvdata(pdev, rtc);
 
-       rtc->rtc = devm_rtc_device_register(&pdev->dev, RTC_NAME,
-                                       &lpc32xx_rtc_ops, THIS_MODULE);
-       if (IS_ERR(rtc->rtc)) {
-               dev_err(&pdev->dev, "Can't get RTC\n");
+       rtc->rtc = devm_rtc_allocate_device(&pdev->dev);
+       if (IS_ERR(rtc->rtc))
                return PTR_ERR(rtc->rtc);
-       }
+
+       rtc->rtc->ops = &lpc32xx_rtc_ops;
+
+       err = rtc_register_device(rtc->rtc);
+       if (err)
+               return err;
 
        /*
         * IRQ is enabled after device registration in case alarm IRQ
@@ -374,7 +375,7 @@ static struct platform_driver lpc32xx_rtc_driver = {
        .probe          = lpc32xx_rtc_probe,
        .remove         = lpc32xx_rtc_remove,
        .driver = {
-               .name   = RTC_NAME,
+               .name   = "rtc-lpc32xx",
                .pm     = LPC32XX_RTC_PM_OPS,
                .of_match_table = of_match_ptr(lpc32xx_rtc_match),
        },