rtc: use the IRQ callback interface in (old) RTC driver
the previous patch in the old RTC driver. It also removes the direct
rtc_interrupt() call from arch/x86/kernel/hpetc.c so that there's finally no
(code) dependency to CONFIG_RTC in arch/x86/kernel/hpet.c.
Because of this, it's possible to compile the drivers/char/rtc.ko driver as
module and still use the HPET emulation functionality. This is also expressed
in Kconfig.
Signed-off-by: Bernhard Walle <bwalle@suse.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Cc: Andi Kleen <ak@suse.de>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Robert Picco <Robert.Picco@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 81af31e..4e911d0 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -390,7 +390,7 @@
config HPET_EMULATE_RTC
def_bool y
- depends on HPET_TIMER && RTC=y
+ depends on HPET_TIMER && (RTC=y || RTC=m)
# Mark as embedded because too many people got it wrong.
# The code disables itself when not needed.