diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/alchemy/common/time.c | 15 | ||||
| -rw-r--r-- | arch/mips/kernel/cpu-probe.c | 13 |
2 files changed, 14 insertions, 14 deletions
diff --git a/arch/mips/alchemy/common/time.c b/arch/mips/alchemy/common/time.c index 33fbae79af5e..f34ff8601942 100644 --- a/arch/mips/alchemy/common/time.c +++ b/arch/mips/alchemy/common/time.c @@ -36,14 +36,13 @@ #include <linux/interrupt.h> #include <linux/spinlock.h> +#include <asm/processor.h> #include <asm/time.h> #include <asm/mach-au1x00/au1000.h> /* 32kHz clock enabled and detected */ #define CNTR_OK (SYS_CNTRL_E0 | SYS_CNTRL_32S) -extern int allow_au1k_wait; /* default off for CP0 Counter */ - static cycle_t au1x_counter1_read(struct clocksource *cs) { return au_readl(SYS_RTCREAD); @@ -153,13 +152,17 @@ void __init plat_time_init(void) printk(KERN_INFO "Alchemy clocksource installed\n"); - /* can now use 'wait' */ - allow_au1k_wait = 1; return; cntr_err: - /* counters unusable, use C0 counter */ + /* + * MIPS kernel assigns 'au1k_wait' to 'cpu_wait' before this + * function is called. Because the Alchemy counters are unusable + * the C0 timekeeping code is installed and use of the 'wait' + * instruction must be prohibited, which is done most easily by + * assigning NULL to cpu_wait. + */ + cpu_wait = NULL; r4k_clockevent_init(); init_r4k_clocksource(); - allow_au1k_wait = 0; } diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 1abe9905c9c1..6e4807a19c00 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -91,16 +91,13 @@ static void rm7k_wait_irqoff(void) local_irq_enable(); } -/* The Au1xxx wait is available only if using 32khz counter or - * external timer source, but specifically not CP0 Counter. */ -int allow_au1k_wait; - +/* + * The Au1xxx wait is available only if using 32khz counter or + * external timer source, but specifically not CP0 Counter. + * alchemy/common/time.c may override cpu_wait! + */ static void au1k_wait(void) { - if (!allow_au1k_wait) - return; - - /* using the wait instruction makes CP0 counter unusable */ __asm__(" .set mips3 \n" " cache 0x14, 0(%0) \n" " cache 0x14, 32(%0) \n" |