Re: [PATCH v3 3/3] PCI: Intel DC P3700 NVMe delay after FLR quirk

From: Bjorn Helgaas
Date: Thu Aug 09 2018 - 15:36:00 EST


On Tue, Jul 24, 2018 at 10:18:48AM -0600, Alex Williamson wrote:
> On Tue, 24 Jul 2018 10:14:46 -0600
> Alex Williamson <alex.williamson@xxxxxxxxxx> wrote:
>
> > Add a device specific reset for Intel DC P3700 NVMe device which
> > exhibits a timeout failure in drivers waiting for the ready status to
> > update after NVMe enable if the driver interacts with the device too
> > quickly after FLR. As this has been observed in device assignment
> > scenarios, resolve this with a device specific reset quirk to add an
> > additional, heuristically determined, delay after the FLR completes.
> >
> > Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
> > ---
> > drivers/pci/quirks.c | 22 ++++++++++++++++++++++
> > 1 file changed, 22 insertions(+)
>
> I forgot to link the bz in this one, if this somehow becomes the final
> version, please add:
>
> Link: https://bugzilla.redhat.com/show_bug.cgi?id=159265

Corrected link to: https://bugzilla.redhat.com/show_bug.cgi?id=1592654