| Message ID | 1402466368-22583-5-git-send-email-mikey@neuling.org (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c index 719f6fb..74f5788 100644 --- a/drivers/cpuidle/cpuidle-powernv.c +++ b/drivers/cpuidle/cpuidle-powernv.c @@ -73,12 +73,10 @@ static int fastsleep_loop(struct cpuidle_device *dev, return index; new_lpcr = old_lpcr; - new_lpcr &= ~(LPCR_MER | LPCR_PECE); /* lpcr[mer] must be 0 */ - - /* exit powersave upon external interrupt, but not decrementer - * interrupt. + /* Do not exit powersave upon decrementer as we've setup the timer + * offload. */ - new_lpcr |= LPCR_PECE0; + new_lpcr &= ~LPCR_PECE1; mtspr(SPRN_LPCR, new_lpcr); power7_sleep();
Currently when entering fastsleep we clear all LPCR PECE bits. This patch changes it to only clear the decrementer bit (ie. PECE1), which is the only bit we really need to clear here. This is needed if we want to set other wakeup causes like the PECEDH bit so we can use hypervisor doorbells on powernv. Also we no longer clear the MER bit as it should never be set in the host anyway. Signed-off-by: Michael Neuling <mikey@neuling.org> --- drivers/cpuidle/cpuidle-powernv.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)