From 1b99732932e1e398ec84baf6024afa23f5388716 Mon Sep 17 00:00:00 2001 From: Tushar Behera Date: Mon, 17 Dec 2012 16:02:48 -0800 Subject: drivers/rtc/rtc-s3c.c: convert to use devm_* API rtc-s3c driver is modified to use devm_request_and_ioremap() (combining request_mem_region and ioremap), devm_clk_get() and devm_request_irq() APIs. Since this removes the necessity of freeing the related resources the return path is also simplified. Signed-off-by: Tushar Behera Cc: Alessandro Zummo Cc: Grant Likely Cc: Rob Herring Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-s3c.c | 45 ++++++++------------------------------------- 1 file changed, 8 insertions(+), 37 deletions(-) (limited to 'drivers/rtc/rtc-s3c.c') diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c index d9da51193bc3..e33df1bfe27e 100644 --- a/drivers/rtc/rtc-s3c.c +++ b/drivers/rtc/rtc-s3c.c @@ -47,8 +47,6 @@ struct s3c_rtc_drv_data { /* I have yet to find an S3C implementation with more than one * of these rtc blocks in */ -static struct resource *s3c_rtc_mem; - static struct clk *rtc_clk; static void __iomem *s3c_rtc_base; static int s3c_rtc_alarmno = NO_IRQ; @@ -427,21 +425,13 @@ static int __devexit s3c_rtc_remove(struct platform_device *dev) { struct rtc_device *rtc = platform_get_drvdata(dev); - free_irq(s3c_rtc_alarmno, rtc); - free_irq(s3c_rtc_tickno, rtc); - platform_set_drvdata(dev, NULL); rtc_device_unregister(rtc); s3c_rtc_setaie(&dev->dev, 0); - clk_put(rtc_clk); rtc_clk = NULL; - iounmap(s3c_rtc_base); - release_resource(s3c_rtc_mem); - kfree(s3c_rtc_mem); - return 0; } @@ -496,27 +486,18 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev) return -ENOENT; } - s3c_rtc_mem = request_mem_region(res->start, resource_size(res), - pdev->name); - - if (s3c_rtc_mem == NULL) { - dev_err(&pdev->dev, "failed to reserve memory region\n"); - return -ENOENT; - } - - s3c_rtc_base = ioremap(res->start, resource_size(res)); + s3c_rtc_base = devm_request_and_ioremap(&pdev->dev, res); if (s3c_rtc_base == NULL) { - dev_err(&pdev->dev, "failed ioremap()\n"); - ret = -EINVAL; - goto err_nomap; + dev_err(&pdev->dev, "failed to ioremap memory region\n"); + return -EINVAL; } - rtc_clk = clk_get(&pdev->dev, "rtc"); + rtc_clk = devm_clk_get(&pdev->dev, "rtc"); if (IS_ERR(rtc_clk)) { dev_err(&pdev->dev, "failed to find rtc clock source\n"); ret = PTR_ERR(rtc_clk); rtc_clk = NULL; - goto err_clk; + return ret; } clk_enable(rtc_clk); @@ -575,28 +556,24 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev) s3c_rtc_setfreq(&pdev->dev, 1); - ret = request_irq(s3c_rtc_alarmno, s3c_rtc_alarmirq, + ret = devm_request_irq(&pdev->dev, s3c_rtc_alarmno, s3c_rtc_alarmirq, 0, "s3c2410-rtc alarm", rtc); if (ret) { dev_err(&pdev->dev, "IRQ%d error %d\n", s3c_rtc_alarmno, ret); goto err_alarm_irq; } - ret = request_irq(s3c_rtc_tickno, s3c_rtc_tickirq, + ret = devm_request_irq(&pdev->dev, s3c_rtc_tickno, s3c_rtc_tickirq, 0, "s3c2410-rtc tick", rtc); if (ret) { dev_err(&pdev->dev, "IRQ%d error %d\n", s3c_rtc_tickno, ret); - free_irq(s3c_rtc_alarmno, rtc); - goto err_tick_irq; + goto err_alarm_irq; } clk_disable(rtc_clk); return 0; - err_tick_irq: - free_irq(s3c_rtc_alarmno, rtc); - err_alarm_irq: platform_set_drvdata(pdev, NULL); rtc_device_unregister(rtc); @@ -604,13 +581,7 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev) err_nortc: s3c_rtc_enable(pdev, 0); clk_disable(rtc_clk); - clk_put(rtc_clk); - - err_clk: - iounmap(s3c_rtc_base); - err_nomap: - release_resource(s3c_rtc_mem); return ret; } -- cgit v1.2.2