[RFC PATCH] PCI/portdrv: Support for subtractive decode bridge

From: honghui.zhang
Date: Thu Dec 13 2018 - 22:40:45 EST


From: Honghui Zhang <honghui.zhang@xxxxxxxxxxxx>

The Class Code for subtractive decode PCI-to-PCI bridge is 060401h,
change the class_mask values to make portdrv support this type bridge.

Signed-off-by: Honghui Zhang <honghui.zhang@xxxxxxxxxxxx>
---
drivers/pci/pcie/portdrv_pci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c
index eef22dc..86926ea 100644
--- a/drivers/pci/pcie/portdrv_pci.c
+++ b/drivers/pci/pcie/portdrv_pci.c
@@ -179,7 +179,7 @@ static void pcie_portdrv_err_resume(struct pci_dev *dev)
*/
static const struct pci_device_id port_pci_ids[] = { {
/* handle any PCI-Express port */
- PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), ~0),
+ PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), ~0x01),
}, { /* end: all zeroes */ }
};

--
2.6.4