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PCI: Mark Atheros AR9580 to avoid bus reset

PATCH Applied Maik Broemme 2 participants 2 messages Aug 9, 2016 – Aug 19, 2016 PCI

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Maik Broemme

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PATCH 1/1 PCI: Mark Atheros AR9580 to avoid bus reset

Similar to the AR93xx and the AR94xx series, the AR95xx also have the same quirk for the Bus Reset. It will lead to instant system reset if the device is assigned via VFIO to a KVM VM. I've been able reproduce this behavior with a MikroTik R11e-2HnD.

Fixes c3e59ee4e766 ("PCI: Mark Atheros AR93xx to avoid bus reset")
Signed-off-by Maik Broemme <[email protected]>
CC [email protected]
---
 drivers/pci/quirks.c | 1 +
 1 file changed, 1 insertion(+)
drivers/pci/quirks.c +1 -0
index 37ff015..7d82189 100644
@@ -3198,6 +3198,7 @@ static void quirk_no_bus_reset(struct pci_dev *dev)
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0030, quirk_no_bus_reset);
 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);
 
 static void quirk_no_pm_reset(struct pci_dev *dev)
 {
Signature · 1 line
2.9.2
Applied
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[+cc Chris, Alex]

Quoted 8 lines · Maik Broemme

Similar to the AR93xx and the AR94xx series, the AR95xx also have the same quirk for the Bus Reset. It will lead to instant system reset if the device is assigned via VFIO to a KVM VM. I've been able reproduce this behavior with a MikroTik R11e-2HnD.

Fixes c3e59ee4e766 ("PCI: Mark Atheros AR93xx to avoid bus reset")
Signed-off-by Maik Broemme <[email protected]>
CC [email protected]

Applied to pci/virtualization for v4.9, thanks!

Quoted 23 lines
---
 drivers/pci/quirks.c | 1 +
 1 file changed, 1 insertion(+)
drivers/pci/quirks.c +1 -0
index 37ff015..7d82189 100644
@@ -3198,6 +3198,7 @@ static void quirk_no_bus_reset(struct pci_dev *dev)
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0030, quirk_no_bus_reset);
 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);
 
 static void quirk_no_pm_reset(struct pci_dev *dev)
 {
Signature · 6 lines
2.9.2

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