linux/arch
Bernhard Walle 1bdbdaacf7 x86, rtc: make CONFIG_HPET_EMULATE_RTC usable from modules
enabled, then interrupts don't work for the rtc-cmos driver which results in
RTC_AIE*, RTC_PIE* and RTC_ALM being unusable.  This affects hwclock from
util-linux-ng at least on i386 since that uses RTC_PIE_ON.  (For x86-64, a
polling method is used for unknown reasons.)

This patch series now

  1. export the functions from arch/x86/kernel/hpet.c that the old char/rtc
     driver uses to work around that problem,

  2. makes it possible to compile the old rtc driver as module, while still
     having CONFIG_HPET_EMULATE_RTC enabled and

  3. makes use of the exported functions in (1) in the new rtc-cmos driver.

This patch:

This patch makes the RTC emulation functions in arch/x86/kernel/hpet.c usable
for kernel modules. It

  - exports the functions (EXPORT_SYMBOL_GPL()),
  - adds an interface to register the interrupt callback function
    instead of using only a fixed callback function and
  - replaces the rtc_get_rtc_time() function which depends on
    CONFIG_RTC with a call to get_rtc_time() which is defined in
    include/asm-generic/rtc.h.

The only dependency to CONFIG_RTC is the call to rtc_interrupt() which is
removed by the next patch. After this, there's no (code) dependency of
this functions to CONFIG_RTC=y any more.

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>
2008-01-30 13:33:28 +01:00
..
alpha remove __attribute_used__ 2008-01-28 23:21:18 +01:00
arm spinlock: lockbreak cleanup 2008-01-30 13:31:20 +01:00
avr32 all archs: consolidate init and exit sections in vmlinux.lds.h 2008-01-28 23:21:17 +01:00
blackfin all archs: consolidate init and exit sections in vmlinux.lds.h 2008-01-28 23:21:17 +01:00
cris all archs: consolidate init and exit sections in vmlinux.lds.h 2008-01-28 23:21:17 +01:00
frv Remove references to "make dep" 2008-01-28 23:22:13 +01:00
h8300 all archs: consolidate init and exit sections in vmlinux.lds.h 2008-01-28 23:21:17 +01:00
ia64 percpu: make the asm-generic/percpu.h more "generic" 2008-01-30 13:32:52 +01:00
m32r spinlock: lockbreak cleanup 2008-01-30 13:31:20 +01:00
m68k all archs: consolidate init and exit sections in vmlinux.lds.h 2008-01-28 23:21:17 +01:00
m68knommu all archs: consolidate init and exit sections in vmlinux.lds.h 2008-01-28 23:21:17 +01:00
mips spinlock: lockbreak cleanup 2008-01-30 13:31:20 +01:00
parisc spinlock: lockbreak cleanup 2008-01-30 13:31:20 +01:00
powerpc percpu: use a kconfig variable to signal arch specific percpu setup 2008-01-30 13:32:51 +01:00
ppc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.25 2008-01-29 22:54:01 +11:00
s390 all archs: consolidate init and exit sections in vmlinux.lds.h 2008-01-28 23:21:17 +01:00
sh all archs: consolidate init and exit sections in vmlinux.lds.h 2008-01-28 23:21:17 +01:00
sparc all archs: consolidate init and exit sections in vmlinux.lds.h 2008-01-28 23:21:17 +01:00
sparc64 percpu: use a kconfig variable to signal arch specific percpu setup 2008-01-30 13:32:51 +01:00
um UML: remove remaining FASTCALL uses 2008-01-30 13:31:14 +01:00
v850 all archs: consolidate init and exit sections in vmlinux.lds.h 2008-01-28 23:21:17 +01:00
x86 x86, rtc: make CONFIG_HPET_EMULATE_RTC usable from modules 2008-01-30 13:33:28 +01:00
xtensa Remove references to "make dep" 2008-01-28 23:22:13 +01:00
.gitignore arch: Ignore arch/i386 and arch/x86_64 2008-01-19 21:29:39 -08:00