[MIPS] Clocksource: Only install r4k counter as clocksource if present.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
git-mirror · Mar 12, 2008 · 69e634f · 69e634f
1 parent 127f166
commit 69e634f
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Showing 2 changed files with 9 additions and 3 deletions.
diff --git a/arch/mips/kernel/csrc-r4k.c b/arch/mips/kernel/csrc-r4k.c
@@ -22,12 +22,17 @@ static struct clocksource clocksource_mips = {
 	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
-void __init init_mips_clocksource(void)
+int __init init_mips_clocksource(void)
 {
+	if (!cpu_has_counter || !mips_hpt_frequency)
+		return -ENXIO;
+
 	/* Calclate a somewhat reasonable rating value */
 	clocksource_mips.rating = 200 + mips_hpt_frequency / 10000000;
 
 	clocksource_set_clock(&clocksource_mips, mips_hpt_frequency);
 
 	clocksource_register(&clocksource_mips);
+
+	return 0;
 }
diff --git a/include/asm-mips/time.h b/include/asm-mips/time.h
@@ -64,10 +64,11 @@ static inline int mips_clockevent_init(void)
  * Initialize the count register as a clocksource
  */
 #ifdef CONFIG_CEVT_R4K
-extern void init_mips_clocksource(void);
+extern int init_mips_clocksource(void);
 #else
-static inline void init_mips_clocksource(void)
+static inline int init_mips_clocksource(void)
 {
+	return 0;
 }
 #endif