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| author | Ingo Molnar <mingo@elte.hu> | 2009-03-30 23:53:32 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-30 23:53:32 +0200 |
| commit | 65fb0d23fcddd8697c871047b700c78817bdaa43 (patch) | |
| tree | 119e6e5f276622c4c862f6c9b6d795264ba1603a /drivers/rtc/rtc-mv.c | |
| parent | 8c083f081d0014057901c68a0a3e0f8ca7ac8d23 (diff) | |
| parent | dfbbe89e197a77f2c8046a51c74e33e35f878080 (diff) | |
| download | linux-65fb0d23fcddd8697c871047b700c78817bdaa43.tar.gz linux-65fb0d23fcddd8697c871047b700c78817bdaa43.tar.bz2 linux-65fb0d23fcddd8697c871047b700c78817bdaa43.zip | |
Merge branch 'linus' into cpumask-for-linus
Conflicts:
arch/x86/kernel/cpu/common.c
Diffstat (limited to 'drivers/rtc/rtc-mv.c')
| -rw-r--r-- | drivers/rtc/rtc-mv.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-mv.c b/drivers/rtc/rtc-mv.c index 45f12dcd3716..e0263d2005ee 100644 --- a/drivers/rtc/rtc-mv.c +++ b/drivers/rtc/rtc-mv.c @@ -12,6 +12,7 @@ #include <linux/bcd.h> #include <linux/io.h> #include <linux/platform_device.h> +#include <linux/delay.h> #define RTC_TIME_REG_OFFS 0 @@ -119,6 +120,16 @@ static int __init mv_rtc_probe(struct platform_device *pdev) return -EINVAL; } + /* make sure it is actually functional */ + if (rtc_time == 0x01000000) { + ssleep(1); + rtc_time = readl(pdata->ioaddr + RTC_TIME_REG_OFFS); + if (rtc_time == 0x01000000) { + dev_err(&pdev->dev, "internal RTC not ticking\n"); + return -ENODEV; + } + } + platform_set_drvdata(pdev, pdata); pdata->rtc = rtc_device_register(pdev->name, &pdev->dev, &mv_rtc_ops, THIS_MODULE); |