[PATCH] cpuidle/powernv: Re-enable fastsleep at boot time

Commit dcb18694 "Fix ipi on palmeto" disabled fastsleep at boot time.
Revert this commit since we no longer need this fix. However we can
continue to use powersave_nap parameter to control entry into deep
idle states beyond snooze.

Signed-off-by: Preeti U. Murthy <redacted>
---

 drivers/cpuidle/cpuidle-powernv.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c
index b57681d..b430e76 100644
--- a/drivers/cpuidle/cpuidle-powernv.c
+++ b/drivers/cpuidle/cpuidle-powernv.c

@@ -69,8 +69,9 @@ static int fastsleep_loop(struct cpuidle_device *dev,
 	unsigned long old_lpcr = mfspr(SPRN_LPCR);
 	unsigned long new_lpcr;
 
-	if (powersave_nap < 2)
-		return;
+	if (!(powersave_nap > 0))
+		return index;
+
 	if (unlikely(system_state < SYSTEM_RUNNING))
 		return index;
 

Hey Preeti,

On Tue, Nov 18, 2014 at 5:26 PM, Preeti U Murthy
[off-list ref] wrote:

Commit dcb18694 "Fix ipi on palmeto" disabled fastsleep at boot time.

I couldn't find this commit in any tree; upstream, mpe's next, nor powerkvm.

I remember testing this as a workaround for the palmetto, but I don't
recall sending it upstream.

Cheers,

Joel

Hi Joel,

On 11/19/2014 08:04 AM, Joel Stanley wrote:

Hey Preeti,

On Tue, Nov 18, 2014 at 5:26 PM, Preeti U Murthy
[off-list ref] wrote:

quoted

Commit dcb18694 "Fix ipi on palmeto" disabled fastsleep at boot time.

I couldn't find this commit in any tree; upstream, mpe's next, nor powerkvm.

Oh yes you are right. I must have been looking at the wrong git branch.
I verified upstream now. The commit dcb18694 is not present.So we are
good. Thanks for pointing this out :)

Sorry for the noise!

I remember testing this as a workaround for the palmetto, but I don't
recall sending it upstream.

Cheers,

Joel

Regards
Preeti U Murthy