From: poza@codeaurora.org
To: Sinan Kaya <okaya@codeaurora.org>
Cc: Keith Busch <keith.busch@intel.com>,
Linux PCI <linux-pci@vger.kernel.org>,
Bjorn Helgaas <bhelgaas@google.com>
Subject: Re: [PATCH] PCI/AER: Prevent runtime power management during recovery
Date: Tue, 12 Jun 2018 13:21:53 +0530 [thread overview]
Message-ID: <76f700a5484d82529272d94b4531e434@codeaurora.org> (raw)
In-Reply-To: <08e0ba9f-69cd-ea18-ae1b-d0795cceb306@codeaurora.org>
On 2018-06-12 10:10, Sinan Kaya wrote:
> On 6/11/2018 6:29 PM, Keith Busch wrote:
>> A bridge that supports D3 but not hotplug will be subject to runtime
>> power management placing it in a non-operation power state if it
>> doesn't
>> have any devices attached. This patch will prevent this power
>> management
>> during error recovery so that the rescan at the end may be successful.
>
> If there is no card connected, why would the bridge observe a fatal
> error?
fatal error could be coming from anywhere let us say below RootPort..
and RP observes it and decides to take the tree down....
Is that the case Keith is talking about ?
Why will re-enumeration be a problem even if runtime PM is active ?
I assume that enumeration will get bridge out of D3.
next prev parent reply other threads:[~2018-06-12 7:51 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-11 22:29 [PATCH] PCI/AER: Prevent runtime power management during recovery Keith Busch
2018-06-12 4:40 ` Sinan Kaya
2018-06-12 7:51 ` poza [this message]
2018-06-12 14:44 ` Keith Busch
2018-06-12 15:16 ` poza
2018-06-30 19:58 ` Bjorn Helgaas
2018-07-01 11:51 ` Lukas Wunner
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