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From: Alex Williamson <alex.williamson@redhat.com>
To: linux-pci@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org
Subject: [PATCH 0/2] PCI: NVMe reset quirk
Date: Mon, 23 Jul 2018 16:24:14 -0600	[thread overview]
Message-ID: <20180723221533.4371.90064.stgit@gimli.home> (raw)

As discussed in the 2nd patch, at least one NVMe controller sometimes
doesn't like being reset while enabled and another will timeout during
a subsequent re-enable if it happens too quickly after reset.
Introduce a device specific reset quirk for all NVMe class devices so
that we can try to get reliable behavior from them for device
assignment and any other users of the PCI subsystem reset interface.

Patches against current PCI next branch.  Thanks,

Alex

---

Alex Williamson (2):
      PCI: Export pcie_has_flr()
      PCI: NVMe device specific reset quirk


 drivers/pci/pci.c    |    3 +
 drivers/pci/quirks.c |  112 ++++++++++++++++++++++++++++++++++++++++++++++++++
 include/linux/pci.h  |    1 
 3 files changed, 115 insertions(+), 1 deletion(-)

WARNING: multiple messages have this Message-ID (diff)
From: alex.williamson@redhat.com (Alex Williamson)
Subject: [PATCH 0/2] PCI: NVMe reset quirk
Date: Mon, 23 Jul 2018 16:24:14 -0600	[thread overview]
Message-ID: <20180723221533.4371.90064.stgit@gimli.home> (raw)

As discussed in the 2nd patch, at least one NVMe controller sometimes
doesn't like being reset while enabled and another will timeout during
a subsequent re-enable if it happens too quickly after reset.
Introduce a device specific reset quirk for all NVMe class devices so
that we can try to get reliable behavior from them for device
assignment and any other users of the PCI subsystem reset interface.

Patches against current PCI next branch.  Thanks,

Alex

---

Alex Williamson (2):
      PCI: Export pcie_has_flr()
      PCI: NVMe device specific reset quirk


 drivers/pci/pci.c    |    3 +
 drivers/pci/quirks.c |  112 ++++++++++++++++++++++++++++++++++++++++++++++++++
 include/linux/pci.h  |    1 
 3 files changed, 115 insertions(+), 1 deletion(-)

             reply	other threads:[~2018-07-23 22:24 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-23 22:24 Alex Williamson [this message]
2018-07-23 22:24 ` [PATCH 0/2] PCI: NVMe reset quirk Alex Williamson
2018-07-23 22:24 ` [PATCH 1/2] PCI: Export pcie_has_flr() Alex Williamson
2018-07-23 22:24   ` Alex Williamson
2018-07-23 22:24   ` Alex Williamson
2018-07-23 22:24 ` [PATCH 2/2] PCI: NVMe device specific reset quirk Alex Williamson
2018-07-23 22:24   ` Alex Williamson
2018-07-23 22:24   ` Alex Williamson
2018-07-23 22:45   ` Keith Busch
2018-07-23 22:45     ` Keith Busch
2018-07-23 22:45     ` Keith Busch
2018-07-23 23:08     ` Alex Williamson
2018-07-23 23:08       ` Alex Williamson
2018-07-23 23:08       ` Alex Williamson
2018-07-23 22:45   ` Bjorn Helgaas
2018-07-23 22:45     ` Bjorn Helgaas
2018-07-23 22:45     ` Bjorn Helgaas
2018-07-24  0:11     ` Alex Williamson
2018-07-24  0:11       ` Alex Williamson

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