David Miller pointed out that the first version was poorly written.
Have rewritten the patch with his suggestions in mind, and the code
became a lot cleaner.
diff --git a/arch/sparc/kernel/time_32.c b/arch/sparc/kernel/time_32.c
index 614ac7b..a70da0a 100644
--- a/arch/sparc/kernel/time_32.c
+++ b/arch/sparc/kernel/time_32.c
@@ -156,6 +156,10 @@ static int __devinit clock_probe(struct of_device *op, const struct of_device_id
if (!model)
return -ENODEV;
+ /* Only the primary RTC has an address property */
+ if (!of_find_property(dp, "address", NULL))
+ return -ENODEV;
+
m48t59_rtc.resource = &op->resource[0];
if (!strcmp(model, "mk48t02")) {
/* Map the clock register io area read-only */
--
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