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authorWu Zhangjin <wuzhangjin@gmail.com>2010-02-01 17:10:55 +0800
committerRalf Baechle <ralf@linux-mips.org>2010-02-10 22:15:42 +0100
commitf4fc580bec5fb76560329c8c537b9b71d8d032b6 (patch)
tree65c8ab255b57c1163f026d7e6716de5164acec62 /arch
parente28cab42f384745c8a947a9ccd51e4aae52f5d51 (diff)
downloadlinux-linaro-stable-f4fc580bec5fb76560329c8c537b9b71d8d032b6.tar.gz
MIPS: Fixup of the r4k timer
As reported by Maxime Bizon, the commit "MIPS: PowerTV: Fix support for timer interrupts with > 64 external IRQs" have broken the r4k timer since it didn't initialize the cp0_compare_irq_shift variable used in c0_compare_int_pending() on the architectures whose cpu_has_mips_r2 is false. This patch fixes it via initializing the cp0_compare_irq_shift as the cp0_compare_irq used in the old c0_compare_int_pending(). Reported-by: Maxime Bizon <mbizon@freebox.fr> Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Cc: David VomLehn <dvomlehn@cisco.com> Cc: mbizon@freebox.fr Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/922/ Tested-by: Shane McDonald <mcdonald.shane@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/kernel/traps.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 338dfe8ed002..31b204b26ba0 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -1501,6 +1501,7 @@ void __cpuinit per_cpu_trap_init(void)
cp0_perfcount_irq = -1;
} else {
cp0_compare_irq = CP0_LEGACY_COMPARE_IRQ;
+ cp0_compare_irq_shift = cp0_compare_irq;
cp0_perfcount_irq = -1;
}