linux-kernel - Re: [PATCH V2 3/7] PCI: make pci_flr_wait() generic and rename to pci_dev

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Message-ID: <20171129173801.GD27742@infradead.org>
Date:   Wed, 29 Nov 2017 09:38:01 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Sinan Kaya <okaya@...eaurora.org>
Cc:     linux-pci@...r.kernel.org, timur@...eaurora.org,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2 3/7] PCI: make pci_flr_wait() generic and rename to
 pci_dev_wait()

On Mon, Nov 27, 2017 at 01:20:24AM -0500, Sinan Kaya wrote:
> Rev 3.1 Sec 2.3.1 Request Handling Rules:
> Valid reset conditions after which a device is permitted to return CRS
> are:
> * Cold, Warm, and Hot Resets,
> * FLR
> * A reset initiated in response to a D3hot to D0 uninitialized
> 
> Try to reuse FLR implementation towards other reset types.

Should we keep a helper for the FLR wait?  If not I guess the reference
for AF_FLR should be the PCI spec, not the PCIE spec.