linux-kernel - Re: [PATCH 2/4] PCI: Verify functions currently in D3cold have entered D0

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Message-ID: <cc2c3589-6121-4ea9-9778-945be006086e@amd.com>
Date: Wed, 19 Jun 2024 13:46:43 -0500
From: Mario Limonciello <mario.limonciello@....com>
To: Markus Elfring <Markus.Elfring@....de>, linux-pci@...r.kernel.org,
 linux-usb@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Mathias Nyman <mathias.nyman@...el.com>
Cc: LKML <linux-kernel@...r.kernel.org>, Daniel Drake <drake@...lessos.org>,
 Gary Li <Gary.Li@....com>, Mika Westerberg <mika.westerberg@...ux.intel.com>
Subject: Re: [PATCH 2/4] PCI: Verify functions currently in D3cold have
 entered D0

On 6/19/2024 13:45, Markus Elfring wrote:
> …
>> As PCIe r6.0 sec 5.8 specifies that the device will have gone
>> through a conventional reset it may take some time for the
>> device to be ready.
>>
>> Wait up to 1 sec as specified in PCIe r6.0 sec 6.6.1 for a device
>> in D3cold to return to D0.
> 
> Would you like to add the tag “Fixes” accordingly?
> 
> Regards,
> Markus

The first patch is a strong dependency for this to work, and if we don't
bring the first patch back automatically we shouldn't do this one.