diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-04-06 01:41:22 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-06 01:41:22 +0200 |
| commit | 9efe21cb82b5dbe3b0b2ae4de4eccc64ecb94e95 (patch) | |
| tree | 7ff8833745d2f268f897f6fa4a27263b4a572245 /drivers/rtc/rtc-mv.c | |
| parent | de18836e447c2dc30120c0919b8db8ddc0401cc4 (diff) | |
| parent | 0221c81b1b8eb0cbb6b30a0ced52ead32d2b4e4c (diff) | |
Merge branch 'linus' into irq/threaded
Conflicts:
include/linux/irq.h
kernel/irq/handle.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 45f12dcd371..e0263d2005e 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); |