misc_register() overrides misc devices with the same minor that have been
registered earlier, so if you enable both softdog and a hardware watchdog
the current initialization order will leave you with softdog only.
Should be fixed by (untested, 2.2):
diff -ur linux/drivers/char/misc.c linux-prumpf/drivers/char/misc.c
--- linux/drivers/char/misc.c Mon Dec 11 01:49:42 2000
+++ linux-prumpf/drivers/char/misc.c Tue Feb 20 17:49:30 2001
@@ -216,11 +216,15 @@
pc110pad_init();
#endif
/*
- * Only one watchdog can succeed. We probe the pcwatchdog first,
- * then the wdt cards and finally the software watchdog which always
- * works. This means if your hardware watchdog dies or is 'borrowed'
- * for some reason the software watchdog still gives you some cover.
+ * Only one watchdog can succeed. We probe the software watchdog first,
+ * then the hardware watchdogs which can override softdog if you have
+ * both configured. This means if your hardware watchdog dies or is
+ * 'borrowed' for some reason the software watchdog still gives you
+ * some cover.
*/
+#ifdef CONFIG_SOFT_WATCHDOG
+ watchdog_init();
+#endif
#ifdef CONFIG_PCWATCHDOG
pcwatchdog_init();
#endif
@@ -232,9 +236,6 @@
#endif
#ifdef CONFIG_60XX_WDT
sbc60xxwdt_init();
-#endif
-#ifdef CONFIG_SOFT_WATCHDOG
- watchdog_init();
#endif
#ifdef CONFIG_DTLK
dtlk_init();
and (untested, 2.4):
diff -ur linux/drivers/char/Makefile linux-prumpf/drivers/char/Makefile
--- linux/drivers/char/Makefile Thu Jan 4 22:00:55 2001
+++ linux-prumpf/drivers/char/Makefile Tue Feb 20 17:51:39 2001
@@ -170,11 +170,13 @@
obj-$(CONFIG_NWBUTTON) += nwbutton.o
obj-$(CONFIG_NWFLASH) += nwflash.o
-# Only one watchdog can succeed. We probe the hardware watchdog
-# drivers first, then the softdog driver. This means if your hardware
-# watchdog dies or is 'borrowed' for some reason the software watchdog
-# still gives you some cover.
+# Only one watchdog can succeed. We probe the software watchdog first,
+# then the hardware watchdogs which can override softdog if you have
+# both configured. This means if your hardware watchdog dies or is
+# 'borrowed' for some reason the software watchdog still gives you
+# some cover.
+obj-$(CONFIG_SOFT_WATCHDOG) += softdog.o
obj-$(CONFIG_PCWATCHDOG) += pcwd.o
obj-$(CONFIG_ACQUIRE_WDT) += acquirewdt.o
obj-$(CONFIG_MIXCOMWD) += mixcomwd.o
@@ -184,7 +186,6 @@
obj-$(CONFIG_21285_WATCHDOG) += wdt285.o
obj-$(CONFIG_977_WATCHDOG) += wdt977.o
obj-$(CONFIG_I810_TCO) += i810-tco.o
-obj-$(CONFIG_SOFT_WATCHDOG) += softdog.o
include $(TOPDIR)/Rules.make
-
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