Commit eacbc632 authored by Mao Zhongyi's avatar Mao Zhongyi Committed by Michael S. Tsirkin
Browse files

pci: Add comment for pci_add_capability2() 



Comments for pci_add_capability2() to explain the return
value. This may help to make a correct return value check
for its callers.

Cc: mst@redhat.com
Cc: marcel@redhat.com
Cc: armbru@redhat.com
Signed-off-by: default avatarMao Zhongyi <maozy.fnst@cn.fujitsu.com>
Reviewed-by: default avatarMarcel Apfelbaum <marcel@redhat.com>
Reviewed-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 673b0d7c

hw/pci/pci.c

+6 −0
Original line number Diff line number Diff line
@@ -2276,6 +2276,12 @@ int pci_add_capability(PCIDevice *pdev, uint8_t cap_id, 
    return ret;

}



/*

 * On success, pci_add_capability2() returns a positive value

 * that the offset of the pci capability.

 * On failure, it sets an error and returns a negative error

 * code.

 */

int pci_add_capability2(PCIDevice *pdev, uint8_t cap_id,

                       uint8_t offset, uint8_t size,

                       Error **errp)