[PATCH v2 13/19] ARM: at91:rtc/rtc-at91sam9: ioremap register bank
From: Nicolas Ferre <hidden>
Date: 2012-02-22 09:40:18
Also in:
lkml
Subsystem:
real time clock (rtc) subsystem, the rest · Maintainers:
Alexandre Belloni, Linus Torvalds
From: Jean-Christophe PLAGNIOL-VILLARD <redacted> 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 <redacted> Acked-by: Nicolas Ferre <redacted> --- 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 65896a3..08b69fd 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c@@ -307,8 +307,12 @@ static int __devinit 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 __devinit 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 __devinit 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 __devexit at91_rtc_remove(struct platform_device *pdev) rtc_device_unregister(rtc->rtcdev); + iounmap(rtc->rtt); platform_set_drvdata(pdev, NULL); kfree(rtc); return 0;
--
1.7.9