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rtc: remove and clarify unneeded externs
When CONFIG_HPET_EMULATE_RTC is defined the external declaration of hpet_rtc_interrupt is redundant due to the inclusion of hpet.h. When !CONFIG_HPET_EMULATE_RTC we make it clear that hpet_rtc_interrupt is not used by defining it to return zero. Signed-off-by: Carlos R. Mafra <crmafra@ift.unesp.br> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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2 changed files with 4 additions and 3 deletions
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@ -121,8 +121,6 @@ static irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id)
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return 0;
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}
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#endif
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#else
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extern irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id);
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#endif
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/*
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@ -52,7 +52,10 @@
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#define hpet_rtc_timer_init() do { } while (0)
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#define hpet_register_irq_handler(h) 0
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#define hpet_unregister_irq_handler(h) do { } while (0)
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extern irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id);
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static irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id)
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{
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return 0;
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}
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#endif
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struct cmos_rtc {
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