Thread (2 messages) 2 messages, 2 authors, 2016-09-29

Re: powerpc/powernv: Call opal_pci_poll() if needed

From: Michael Ellerman <hidden>
Date: 2016-09-29 13:13:14

On Fri, 2016-24-06 at 06:44:19 UTC, Gavin Shan wrote:
When issuing PHB reset, OPAL API opal_pci_poll() is called to drive
the state machine in OPAL forward. However, we needn't always call
the function under some circumstances like reset deassert.

This avoids calling opal_pci_poll() when OPAL_SUCCESS is returned
from opal_pci_reset(). Except the overhead introduced by additional
one unnecessary OPAL call, I didn't run into real issue because of
this.

Reported-by: Pridhiviraj Paidipeddi <redacted>
Signed-off-by: Gavin Shan <redacted>
Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/fbce44d0ed42e4653172376f4dfeaa

cheers
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