diff options
| author | David Daney <david.daney@cavium.com> | 2017-09-08 10:10:32 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-10-11 20:23:35 +0200 |
| commit | 822155100e589f2a4891b3b2db2f901824d47e69 (patch) | |
| tree | 15db0d1b2fefea0126fe9bcb35635abc23c2c46b /drivers/pci | |
| parent | Linux 4.14-rc3 (diff) | |
| download | linux-822155100e589f2a4891b3b2db2f901824d47e69.tar.xz linux-822155100e589f2a4891b3b2db2f901824d47e69.zip | |
PCI: Mark Cavium CN8xxx to avoid bus reset
Root ports of cn8xxx do not function after bus reset when used with some
e1000e and LSI HBA devices. Add a quirk to prevent bus reset on these root
ports.
Signed-off-by: David Daney <david.daney@cavium.com>
[jglauber@cavium.com: fixed typo and whitespaces]
Signed-off-by: Jan Glauber <jglauber@cavium.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/quirks.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index a4d33619a7bb..8c2fd3dc8df6 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3365,6 +3365,13 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0032, quirk_no_bus_reset); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003c, quirk_no_bus_reset); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0033, quirk_no_bus_reset); +/* + * Root port on some Cavium CN8xxx chips do not successfully complete a bus + * reset when used with certain child devices. After the reset, config + * accesses to the child may fail. + */ +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CAVIUM, 0xa100, quirk_no_bus_reset); + static void quirk_no_pm_reset(struct pci_dev *dev) { /* |