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author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-07-10 09:16:43 (GMT) |
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committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-07-10 09:16:43 (GMT) |
commit | 50bba07d6a16ce4a3b4f6abb44bfd3645c046ef6 (patch) | |
tree | c76f080377dd611857fa33f38a2b8a2af4576f8b /arch/powerpc/platforms | |
parent | a8b91e43afd736fcebb0836359e5ddaeae45b2ab (diff) | |
parent | 50fb31cfed9218b439360caf7c0399b00042da15 (diff) | |
download | linux-fsl-qoriq-50bba07d6a16ce4a3b4f6abb44bfd3645c046ef6.tar.xz |
Merge branch 'merge' into next
We want to bring in the latest IRQ fixes
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r-- | arch/powerpc/platforms/cell/pervasive.c | 11 | ||||
-rw-r--r-- | arch/powerpc/platforms/pseries/processor_idle.c | 17 |
2 files changed, 16 insertions, 12 deletions
diff --git a/arch/powerpc/platforms/cell/pervasive.c b/arch/powerpc/platforms/cell/pervasive.c index efdacc8..d17e98b 100644 --- a/arch/powerpc/platforms/cell/pervasive.c +++ b/arch/powerpc/platforms/cell/pervasive.c @@ -42,11 +42,9 @@ static void cbe_power_save(void) { unsigned long ctrl, thread_switch_control; - /* - * We need to hard disable interrupts, the local_irq_enable() done by - * our caller upon return will hard re-enable. - */ - hard_irq_disable(); + /* Ensure our interrupt state is properly tracked */ + if (!prep_irq_for_idle()) + return; ctrl = mfspr(SPRN_CTRLF); @@ -81,6 +79,9 @@ static void cbe_power_save(void) */ ctrl &= ~(CTRL_RUNLATCH | CTRL_TE); mtspr(SPRN_CTRLT, ctrl); + + /* Re-enable interrupts in MSR */ + __hard_irq_enable(); } static int cbe_system_reset_exception(struct pt_regs *regs) diff --git a/arch/powerpc/platforms/pseries/processor_idle.c b/arch/powerpc/platforms/pseries/processor_idle.c index a97ef66..7f5668b 100644 --- a/arch/powerpc/platforms/pseries/processor_idle.c +++ b/arch/powerpc/platforms/pseries/processor_idle.c @@ -100,15 +100,18 @@ out: static void check_and_cede_processor(void) { /* - * Interrupts are soft-disabled at this point, - * but not hard disabled. So an interrupt might have - * occurred before entering NAP, and would be potentially - * lost (edge events, decrementer events, etc...) unless - * we first hard disable then check. + * Ensure our interrupt state is properly tracked, + * also checks if no interrupt has occurred while we + * were soft-disabled */ - hard_irq_disable(); - if (!lazy_irq_pending()) + if (prep_irq_for_idle()) { cede_processor(); +#ifdef CONFIG_TRACE_IRQFLAGS + /* Ensure that H_CEDE returns with IRQs on */ + if (WARN_ON(!(mfmsr() & MSR_EE))) + __hard_irq_enable(); +#endif + } } static int dedicated_cede_loop(struct cpuidle_device *dev, |