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| author | Alex Williamson <alex.williamson@redhat.com> | 2015-01-15 18:16:04 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-29 17:40:48 -0800 |
| commit | 408f4508ec06f940450603a6782f370df1a048a2 (patch) | |
| tree | 8809c157d06f01f99b316f7fd606a1a0f514b4ca /include | |
| parent | fdb1698eadff17e6b2f48281084955ec08b25e1c (diff) | |
| download | lwn-408f4508ec06f940450603a6782f370df1a048a2.tar.gz lwn-408f4508ec06f940450603a6782f370df1a048a2.zip | |
PCI: Add flag for devices where we can't use bus reset
commit f331a859e0ee5a898c1f47596eddad4c4f02d657 upstream.
Enable a mechanism for devices to quirk that they do not behave when
doing a PCI bus reset. We require a modest level of spec compliant
behavior in order to do a reset, for instance the device should come
out of reset without throwing errors and PCI config space should be
accessible after reset. This is too much to ask for some devices.
Link: http://lkml.kernel.org/r/20140923210318.498dacbd@dualc.maya.org
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pci.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 0e5e16c6f7f1..d662546f77d8 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -170,6 +170,8 @@ enum pci_dev_flags { PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2, /* Provide indication device is assigned by a Virtual Machine Manager */ PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) 4, + /* Do not use bus resets for device */ + PCI_DEV_FLAGS_NO_BUS_RESET = (__force pci_dev_flags_t) (1 << 6), }; enum pci_irq_reroute_variant { |