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

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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>
This commit is contained in:
Jingoo Han 2013-07-03 15:07:11 -07:00 committed by Linus Torvalds
parent fac42b414a
commit 0209affa6e
1 changed files with 21 additions and 51 deletions
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72
drivers/rtc/rtc-sh.c
View file

@ -593,7 +593,7 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
char clk_name[6];
int clk_id, ret;
rtc = kzalloc(sizeof(struct sh_rtc), GFP_KERNEL);
rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
if (unlikely(!rtc))
return -ENOMEM;
@ -602,9 +602,8 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
/* get periodic/carry/alarm irqs */
ret = platform_get_irq(pdev, 0);
if (unlikely(ret <= 0)) {
ret = -ENOENT;
dev_err(&pdev->dev, "No IRQ resource\n");
goto err_badres;
return -ENOENT;
}
rtc->periodic_irq = ret;
@ -613,24 +612,21 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
if (unlikely(res == NULL)) {
ret = -ENOENT;
dev_err(&pdev->dev, "No IO resource\n");
goto err_badres;
return -ENOENT;
}
rtc->regsize = resource_size(res);
rtc->res = request_mem_region(res->start, rtc->regsize, pdev->name);
if (unlikely(!rtc->res)) {
ret = -EBUSY;
goto err_badres;
}
rtc->res = devm_request_mem_region(&pdev->dev, res->start,
rtc->regsize, pdev->name);
if (unlikely(!rtc->res))
return -EBUSY;
rtc->regbase = ioremap_nocache(rtc->res->start, rtc->regsize);
if (unlikely(!rtc->regbase)) {
ret = -EINVAL;
goto err_badmap;
}
rtc->regbase = devm_ioremap_nocache(&pdev->dev, rtc->res->start,
rtc->regsize);
if (unlikely(!rtc->regbase))
return -EINVAL;
clk_id = pdev->id;
/* With a single device, the clock id is still "rtc0" */
@ -639,7 +635,7 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
snprintf(clk_name, sizeof(clk_name), "rtc%d", clk_id);
rtc->clk = clk_get(&pdev->dev, clk_name);
rtc->clk = devm_clk_get(&pdev->dev, clk_name);
if (IS_ERR(rtc->clk)) {
/*
* No error handling for rtc->clk intentionally, not all
@ -665,8 +661,8 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
if (rtc->carry_irq <= 0) {
/* register shared periodic/carry/alarm irq */
ret = request_irq(rtc->periodic_irq, sh_rtc_shared,
0, "sh-rtc", rtc);
ret = devm_request_irq(&pdev->dev, rtc->periodic_irq,
sh_rtc_shared, 0, "sh-rtc", rtc);
if (unlikely(ret)) {
dev_err(&pdev->dev,
"request IRQ failed with %d, IRQ %d\n", ret,
@ -675,8 +671,8 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
}
} else {
/* register periodic/carry/alarm irqs */
ret = request_irq(rtc->periodic_irq, sh_rtc_periodic,
0, "sh-rtc period", rtc);
ret = devm_request_irq(&pdev->dev, rtc->periodic_irq,
sh_rtc_periodic, 0, "sh-rtc period", rtc);
if (unlikely(ret)) {
dev_err(&pdev->dev,
"request period IRQ failed with %d, IRQ %d\n",
@ -684,24 +680,21 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
goto err_unmap;
}
ret = request_irq(rtc->carry_irq, sh_rtc_interrupt,
0, "sh-rtc carry", rtc);
ret = devm_request_irq(&pdev->dev, rtc->carry_irq,
sh_rtc_interrupt, 0, "sh-rtc carry", rtc);
if (unlikely(ret)) {
dev_err(&pdev->dev,
"request carry IRQ failed with %d, IRQ %d\n",
ret, rtc->carry_irq);
free_irq(rtc->periodic_irq, rtc);
goto err_unmap;
}
ret = request_irq(rtc->alarm_irq, sh_rtc_alarm,
0, "sh-rtc alarm", rtc);
ret = devm_request_irq(&pdev->dev, rtc->alarm_irq,
sh_rtc_alarm, 0, "sh-rtc alarm", rtc);
if (unlikely(ret)) {
dev_err(&pdev->dev,
"request alarm IRQ failed with %d, IRQ %d\n",
ret, rtc->alarm_irq);
free_irq(rtc->carry_irq, rtc);
free_irq(rtc->periodic_irq, rtc);
goto err_unmap;
}
}
@ -714,13 +707,10 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
sh_rtc_setaie(&pdev->dev, 0);
sh_rtc_setcie(&pdev->dev, 0);
rtc->rtc_dev = rtc_device_register("sh", &pdev->dev,
rtc->rtc_dev = devm_rtc_device_register(&pdev->dev, "sh",
&sh_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc->rtc_dev)) {
ret = PTR_ERR(rtc->rtc_dev);
free_irq(rtc->periodic_irq, rtc);
free_irq(rtc->carry_irq, rtc);
free_irq(rtc->alarm_irq, rtc);
goto err_unmap;
}
@ -737,12 +727,6 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
err_unmap:
clk_disable(rtc->clk);
clk_put(rtc->clk);
iounmap(rtc->regbase);
err_badmap:
release_mem_region(rtc->res->start, rtc->regsize);
err_badres:
kfree(rtc);
return ret;
}
@ -751,26 +735,12 @@ static int __exit sh_rtc_remove(struct platform_device *pdev)
{
struct sh_rtc *rtc = platform_get_drvdata(pdev);
rtc_device_unregister(rtc->rtc_dev);
sh_rtc_irq_set_state(&pdev->dev, 0);
sh_rtc_setaie(&pdev->dev, 0);
sh_rtc_setcie(&pdev->dev, 0);
free_irq(rtc->periodic_irq, rtc);
if (rtc->carry_irq > 0) {
free_irq(rtc->carry_irq, rtc);
free_irq(rtc->alarm_irq, rtc);
}
iounmap(rtc->regbase);
release_mem_region(rtc->res->start, rtc->regsize);
clk_disable(rtc->clk);
clk_put(rtc->clk);
kfree(rtc);
return 0;
}