diff options
Diffstat (limited to 'arch/powerpc/kernel/irq.c')
| -rw-r--r-- | arch/powerpc/kernel/irq.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 77be3d058a65..fa6f38525801 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -159,8 +159,17 @@ notrace void raw_local_irq_restore(unsigned long en) * use local_paca instead of get_paca() to avoid preemption checking. */ local_paca->hard_enabled = en; + +#ifndef CONFIG_BOOKE + /* On server, re-trigger the decrementer if it went negative since + * some processors only trigger on edge transitions of the sign bit. + * + * BookE has a level sensitive decrementer (latches in TSR) so we + * don't need that + */ if ((int)mfspr(SPRN_DEC) < 0) mtspr(SPRN_DEC, 1); +#endif /* CONFIG_BOOKE */ /* * Force the delivery of pending soft-disabled interrupts on PS3. |
