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| author | Ralf Baechle <ralf@linux-mips.org> | 2008-03-12 13:58:10 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2008-03-12 14:14:42 +0000 |
| commit | 69e634f1e27c8e5b954ea4be2d05dd744cabc0bc (patch) | |
| tree | 0736d911ddd810ab36470f6121b9a73343307ee4 | |
| parent | 127f1668617ae638f90f113a32f956887acbb94a (diff) | |
| download | linux-69e634f1e27c8e5b954ea4be2d05dd744cabc0bc.tar.bz2 | |
[MIPS] Clocksource: Only install r4k counter as clocksource if present.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/kernel/csrc-r4k.c | 7 | ||||
| -rw-r--r-- | include/asm-mips/time.h | 5 |
2 files changed, 9 insertions, 3 deletions
diff --git a/arch/mips/kernel/csrc-r4k.c b/arch/mips/kernel/csrc-r4k.c index 0e2b5cd81f67..86e026f067bc 100644 --- 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 index a8fd16e1981f..d3bd5c5aa2ec 100644 --- 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 |