[xen stable-4.16] pci: fix pci_get_pdev_by_domain() to always account for the segment

[patchbot@xxxxxxx]

commit b0806d84d48d983d40a29534e663652887287a78
Author:     Roger Pau Monné <roger.pau@xxxxxxxxxx>
AuthorDate: Tue May 23 15:03:41 2023 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue May 23 15:03:41 2023 +0200

    pci: fix pci_get_pdev_by_domain() to always account for the segment
    
    When a domain parameter is provided to pci_get_pdev_by_domain() the
    search function would match against bus and devfn, without taking the
    segment into account.
    
    Fix this and also account for the passed segment.
    
    Fixes: 8cf6e0738906 ('PCI: simplify (and thus correct) 
pci_get_pdev{,_by_domain}()')
    Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    master commit: c7908869ac26961a3919491705e521179ad3fc0e
    master date: 2023-05-22 16:11:55 +0200
---
 xen/drivers/passthrough/pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/drivers/passthrough/pci.c b/xen/drivers/passthrough/pci.c
index da4ecda814..a9da7367c2 100644
--- a/xen/drivers/passthrough/pci.c
+++ b/xen/drivers/passthrough/pci.c
@@ -570,7 +570,7 @@ struct pci_dev *pci_get_pdev_by_domain(const struct domain 
*d, uint16_t seg,
     }
     else
         list_for_each_entry ( pdev, &d->pdev_list, domain_list )
-            if ( pdev->bus == bus && pdev->devfn == devfn )
+            if ( pdev->seg == seg && pdev->bus == bus && pdev->devfn == devfn )
                 return pdev;
 
     return NULL;
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.16