diff options
Diffstat (limited to 'drivers/rtc/rtc-at91sam9.c')
| -rw-r--r-- | drivers/rtc/rtc-at91sam9.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c index a3ad957507d..ee3c122c059 100644 --- a/drivers/rtc/rtc-at91sam9.c +++ b/drivers/rtc/rtc-at91sam9.c @@ -307,8 +307,12 @@ static int __init at91_rtc_probe(struct platform_device *pdev) device_init_wakeup(&pdev->dev, 1); platform_set_drvdata(pdev, rtc); - rtc->rtt = (void __force __iomem *) (AT91_VA_BASE_SYS - AT91_BASE_SYS); - rtc->rtt += r->start; + rtc->rtt = ioremap(r->start, resource_size(r)); + if (!rtc->rtt) { + dev_err(&pdev->dev, "failed to map registers, aborting.\n"); + ret = -ENOMEM; + goto fail; + } mr = rtt_readl(rtc, MR); @@ -326,7 +330,7 @@ static int __init at91_rtc_probe(struct platform_device *pdev) &at91_rtc_ops, THIS_MODULE); if (IS_ERR(rtc->rtcdev)) { ret = PTR_ERR(rtc->rtcdev); - goto fail; + goto fail_register; } /* register irq handler after we know what name we'll use */ @@ -351,6 +355,8 @@ static int __init at91_rtc_probe(struct platform_device *pdev) return 0; +fail_register: + iounmap(rtc->rtt); fail: platform_set_drvdata(pdev, NULL); kfree(rtc); @@ -371,6 +377,7 @@ static int __exit at91_rtc_remove(struct platform_device *pdev) rtc_device_unregister(rtc->rtcdev); + iounmap(rtc->rtt); platform_set_drvdata(pdev, NULL); kfree(rtc); return 0; |