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From: Alex Williamson <>
Subject: [PATCH v3 0/3] PCI: NVMe reset quirks
Date: Tue, 24 Jul 2018 10:14:19 -0600
Message-ID: <20180724160440.2729.75178.stgit@gimli.home> (raw)

v3: Separate quirks, only for the afflicted devices

v2: Add bug link, use Samsung vendor ID, add spec references

Fix two different NVMe device reset issues with device specific
quirks.  The Samsung controller in patch 2 sometimes doesn't like
being reset while enabled, so disable the NVMe controller prior to
FLR.  This quirk is generic to all NVMe class devices, though I've
dropped the additional delay some devices require between disabling
and checking ready status.  This can be added later should any of
those devices need this quirk.  The Intel controller quirk is now
just a simple delay after FLR, which clearly any device needing
similar behavior can also use.  Thanks,



Alex Williamson (3):
      PCI: Export pcie_has_flr()
      PCI: Samsung SM961/PM961 NVMe disable before FLR quirk
      PCI: Intel DC P3700 NVMe delay after FLR quirk

 drivers/pci/pci.c    |    3 +
 drivers/pci/quirks.c |  105 ++++++++++++++++++++++++++++++++++++++++++++++++++
 include/linux/pci.h  |    1 
 3 files changed, 108 insertions(+), 1 deletion(-)

             reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-24 16:14 Alex Williamson [this message]
2018-07-24 16:14 ` [PATCH v3 1/3] PCI: Export pcie_has_flr() Alex Williamson
2018-07-24 16:14 ` [PATCH v3 2/3] PCI: Samsung SM961/PM961 NVMe disable before FLR quirk Alex Williamson
2018-07-24 19:53   ` Minwoo Im
2018-07-24 20:09     ` Alex Williamson
2018-07-24 16:14 ` [PATCH v3 3/3] PCI: Intel DC P3700 NVMe delay after " Alex Williamson
2018-07-24 16:18   ` Alex Williamson
2018-08-09 19:35     ` Bjorn Helgaas

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