[MIPS] Clocksource: Only install r4k counter as clocksource if present.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/csrc-r4k.c b/arch/mips/kernel/csrc-r4k.c
index 0e2b5cd..86e026f 100644
--- a/arch/mips/kernel/csrc-r4k.c
+++ b/arch/mips/kernel/csrc-r4k.c
@@ -22,12 +22,17 @@
.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
index a8fd16e..d3bd5c5 100644
--- a/include/asm-mips/time.h
+++ b/include/asm-mips/time.h
@@ -64,10 +64,11 @@
* 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