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ARM: at91:rtc/rtc-at91sam9: ioremap register bank 

Instead of computing virtual address with AT91_VA_BASE_SYS, use the
appropriate ioremap() call on the driver "memory" resource.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD 2011-09-18 10:17:54 +08:00 committed by Nicolas Ferre
parent e8c9dc93e2
commit 2dcc90e6ac
1 changed files with 10 additions and 3 deletions
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13
drivers/rtc/rtc-at91sam9.c
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@ -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;