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authorJingoo Han <jg1.han@samsung.com>2014-04-03 14:49:49 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-03 16:21:19 -0700
commitcaa3af259d5439e28c6ed1fc0efbed994146e403 (patch)
tree4f3733ce0800fa339d4bd28b8f166223a9c39503 /drivers
parent1e6789f6e2e2b1645527d08832bfb95982da17ff (diff)
rtc: rtc-vt8500: use devm_ioremap_resource()
Use devm_ioremap_resource() in order to make the code simpler, and move 'struct resource *res' from 'struct vt8500_rtc' to vt8500_rtc_probe() because the 'res' variable is used only in vt8500_rtc_probe(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Tony Prisk <linux@prisktech.co.nz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/rtc/rtc-vt8500.c28
1 files changed, 5 insertions, 23 deletions
diff --git a/drivers/rtc/rtc-vt8500.c b/drivers/rtc/rtc-vt8500.c
index df2ef3eba7cd..051da968da6d 100644
--- a/drivers/rtc/rtc-vt8500.c
+++ b/drivers/rtc/rtc-vt8500.c
@@ -79,7 +79,6 @@
struct vt8500_rtc {
void __iomem *regbase;
- struct resource *res;
int irq_alarm;
struct rtc_device *rtc;
spinlock_t lock; /* Protects this structure */
@@ -209,6 +208,7 @@ static const struct rtc_class_ops vt8500_rtc_ops = {
static int vt8500_rtc_probe(struct platform_device *pdev)
{
struct vt8500_rtc *vt8500_rtc;
+ struct resource *res;
int ret;
vt8500_rtc = devm_kzalloc(&pdev->dev,
@@ -219,34 +219,16 @@ static int vt8500_rtc_probe(struct platform_device *pdev)
spin_lock_init(&vt8500_rtc->lock);
platform_set_drvdata(pdev, vt8500_rtc);
- vt8500_rtc->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!vt8500_rtc->res) {
- dev_err(&pdev->dev, "No I/O memory resource defined\n");
- return -ENXIO;
- }
-
vt8500_rtc->irq_alarm = platform_get_irq(pdev, 0);
if (vt8500_rtc->irq_alarm < 0) {
dev_err(&pdev->dev, "No alarm IRQ resource defined\n");
return vt8500_rtc->irq_alarm;
}
- 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 = 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_return;
- }
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ vt8500_rtc->regbase = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(vt8500_rtc->regbase))
+ return PTR_ERR(vt8500_rtc->regbase);
/* Enable RTC and set it to 24-hour mode */
writel(VT8500_RTC_CR_ENABLE,