---

yaml --- r: 137447 b: refs/heads/master c: 9d1d4f9 h: refs/heads/master i: 137445: 425d5b3 137443: 3ff0543 137439: 2e61559 v: v3
git-mirror · Mar 24, 2009 · fd79403 · fd79403
1 parent 0e18037
commit fd79403
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Showing 2 changed files with 12 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0c1355e36fdc304b102851312d80a1e69c01f5a2
+refs/heads/master: 9d1d4f9eabbca276a2a618a94ed3149d5971063e
diff --git a/trunk/drivers/rtc/rtc-mv.c b/trunk/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);