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authorAlex Williamson <alex.williamson@redhat.com>2015-01-16 00:16:04 (GMT)
committerBjorn Helgaas <bhelgaas@google.com>2015-01-16 16:04:38 (GMT)
commitf331a859e0ee5a898c1f47596eddad4c4f02d657 (patch)
treeb96653706bcaa5b2a779c8df2280894395345aa8 /include
parent97bf6af1f928216fd6c5a66e8a57bfa95a659672 (diff)
PCI: Add flag for devices where we can't use bus reset
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> CC: stable@vger.kernel.org # v3.14+
Diffstat (limited to 'include')
-rw-r--r--include/linux/pci.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 360a966..44627f1 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -175,6 +175,8 @@ enum pci_dev_flags {
PCI_DEV_FLAGS_DMA_ALIAS_DEVFN = (__force pci_dev_flags_t) (1 << 4),
/* Use a PCIe-to-PCI bridge alias even if !pci_is_pcie */
PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS = (__force pci_dev_flags_t) (1 << 5),
+ /* 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 {

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