android_kernel_motorola_sm6225/arch
Paul Mackerras d968014b72 [POWERPC] Prevent decrementer clockevents from firing early
On old powermacs, we sometimes set the decrementer to 1 in order to
trigger a decrementer interrupt, which we use to handle an interrupt
that was pending at the time when it was re-enabled.  This was causing
the decrementer clock event device to call the event function for the
next event early, which was causing problems when high-res timers were
not enabled.

This fixes the problem by recording the timebase value at which the
next event should occur, and checking the current timebase against the
recorded value in timer_interrupt.  If it isn't time for the next
event, it just reprograms the decrementer and returns.

This also subtracts 1 from the value stored into the decrementer,
which is appropriate because the decrementer interrupts on the
transition from 0 to -1, not when the decrementer reaches 0.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-11 21:39:31 +10:00
..
alpha alpha: -Werror fixes for sys_titan.c 2007-08-11 15:47:42 -07:00
arm [ARM] Resolve PCI section warnings 2007-09-30 17:36:22 +01:00
avr32 [AVR32] Wire up i2c-gpio on the ATNGW100 board 2007-08-15 16:36:55 +02:00
blackfin Blackfin arch: Update/Fix PM support add new pm_ops valid 2007-08-27 17:29:10 +08:00
cris ide: fix hidden dependencies on CONFIG_IDE_GENERIC 2007-08-20 22:42:54 +02:00
frv FRV: connect up fallocate 2007-08-11 15:47:40 -07:00
h8300 H8/300: Fix misnamed "CONFIG_BLKDEV_RESERVE_ADDRESS" Kconfig variable 2007-09-11 17:21:20 -07:00
i386 [x86 setup] Correct the SMAP check for INT 0x15, AX=0xe820 2007-09-28 10:12:44 -07:00
ia64 Fix spurious syscall tracing after PTRACE_DETACH + PTRACE_ATTACH 2007-09-10 18:57:47 -07:00
m32r m32r: Rename STI/CLI macros 2007-09-06 11:10:56 +09:00
m68k m68k(nommu): add missing syscalls 2007-09-11 17:21:20 -07:00
m68knommu m68k(nommu): add missing syscalls 2007-09-11 17:21:20 -07:00
mips [MIPS] vmlinux.lds.S: Handle note sections 2007-10-01 14:17:50 +01:00
parisc [PARISC] Add NOTES section 2007-08-27 00:29:25 -04:00
powerpc [POWERPC] Prevent decrementer clockevents from firing early 2007-10-11 21:39:31 +10:00
ppc [POWERPC] Remove redundant reference to non-existent CONFIG_BOOTIMG 2007-10-09 21:02:00 +10:00
s390 [S390] kprobes: fix instruction length calculation 2007-08-22 13:51:49 +02:00
sh sh: missing symbol fix for sh4-202 2007-08-22 13:32:07 +09:00
sh64 sh64: arch/sh64/kernel/setup.c: duplicate include removal. 2007-08-12 12:18:54 +09:00
sparc [SPARC]: Fix EBUS use of uninitialized variable. 2007-09-27 13:09:28 -07:00
sparc64 [SPARC64]: Fix missing load-twin usage in Niagara-1 memcpy. 2007-10-02 01:03:09 -07:00
um uml: fix irqstack crash 2007-09-19 11:24:18 -07:00
v850 PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
x86_64 x86_64: increase VDSO_TEXT_OFFSET for ancient binutils 2007-10-01 19:21:30 -07:00
xtensa xtensa process.c must #include <linux/fs.h> 2007-08-30 09:58:22 -07:00