[dpdk-stable] [PATCH 2/4] bus/pci: fix PCI address compare

[Qi Zhang]

When use memcmp to compare two PCI address, sizeof(struct rte_pci_addr)
is 4 bytes aligned, and it is 8. While only 7 byte of struct rte_pci_addr
is valid. So compare the 8th byte will cause the unexpected result, which
happens when repeatedly attach/detach a device.

Fixes: 94c0776b1bad ("vfio: support hotplug")
Cc: stable at dpdk.org

Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
---
 drivers/bus/pci/linux/pci_vfio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bus/pci/linux/pci_vfio.c b/drivers/bus/pci/linux/pci_vfio.c
index aeeaa9ed8..933b95540 100644
--- a/drivers/bus/pci/linux/pci_vfio.c
+++ b/drivers/bus/pci/linux/pci_vfio.c
@@ -642,7 +642,7 @@ pci_vfio_unmap_resource(struct rte_pci_device *dev)
 	vfio_res_list = RTE_TAILQ_CAST(rte_vfio_tailq.head, mapped_pci_res_list);
 	/* Get vfio_res */
 	TAILQ_FOREACH(vfio_res, vfio_res_list, next) {
-		if (memcmp(&vfio_res->pci_addr, &dev->addr, sizeof(dev->addr)))
+		if (rte_pci_addr_cmp(&vfio_res->pci_addr, &dev->addr))
 			continue;
 		break;
 	}
-- 
2.13.6