diff options
Diffstat (limited to 'arch/powerpc/kernel/idle_power7.S')
| -rw-r--r-- | arch/powerpc/kernel/idle_power7.S | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/idle_power7.S b/arch/powerpc/kernel/idle_power7.S index fcdff198da4b..0cdc9a392839 100644 --- a/arch/powerpc/kernel/idle_power7.S +++ b/arch/powerpc/kernel/idle_power7.S @@ -1,5 +1,5 @@ /* - * This file contains the power_save function for 970-family CPUs. + * This file contains the power_save function for Power7 CPUs. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -15,6 +15,7 @@ #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> #include <asm/ppc-opcode.h> +#include <asm/hw_irq.h> #undef DEBUG @@ -51,9 +52,25 @@ _GLOBAL(power7_idle) rldicl r9,r9,48,1 rotldi r9,r9,16 mtmsrd r9,1 /* hard-disable interrupts */ + + /* Check if something happened while soft-disabled */ + lbz r0,PACAIRQHAPPENED(r13) + cmpwi cr0,r0,0 + beq 1f + addi r1,r1,INT_FRAME_SIZE + ld r0,16(r1) + mtlr r0 + blr + +1: /* We mark irqs hard disabled as this is the state we'll + * be in when returning and we need to tell arch_local_irq_restore() + * about it + */ + li r0,PACA_IRQ_HARD_DIS + stb r0,PACAIRQHAPPENED(r13) + + /* We haven't lost state ... yet */ li r0,0 - stb r0,PACASOFTIRQEN(r13) /* we'll hard-enable shortly */ - stb r0,PACAHARDIRQEN(r13) stb r0,PACA_NAPSTATELOST(r13) /* Continue saving state */ |