diff mbox series

[PULL,v3,27/32] s390x/pci: clean up s390 PCI groups

Message ID 160426457255.24886.10524865426922792046.stgit@gimli.home
State Superseded
Headers show
Series [PULL,v3,01/32] vfio: Add function to unmap VFIO region | expand

Commit Message

Alex Williamson Nov. 1, 2020, 9:02 p.m. UTC 
From: Matthew Rosato <mjrosato@linux.ibm.com>

Add a step to remove all stashed PCI groups to avoid stale data between
machine resets.

Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
---
 hw/s390x/s390-pci-bus.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)
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Patch

diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
index 4c7f06d5cf95..036cf4635a7e 100644
--- a/hw/s390x/s390-pci-bus.c
+++ b/hw/s390x/s390-pci-bus.c
@@ -813,6 +813,17 @@  static void s390_pcihost_realize(DeviceState *dev, Error **errp)
                              S390_ADAPTER_SUPPRESSIBLE, errp);
 }
 
+static void s390_pcihost_unrealize(DeviceState *dev)
+{
+    S390PCIGroup *group;
+    S390pciState *s = S390_PCI_HOST_BRIDGE(dev);
+
+    while (!QTAILQ_EMPTY(&s->zpci_groups)) {
+        group = QTAILQ_FIRST(&s->zpci_groups);
+        QTAILQ_REMOVE(&s->zpci_groups, group, link);
+    }
+}
+
 static int s390_pci_msix_init(S390PCIBusDevice *pbdev)
 {
     char *name;
@@ -1171,6 +1182,7 @@  static void s390_pcihost_class_init(ObjectClass *klass, void *data)
 
     dc->reset = s390_pcihost_reset;
     dc->realize = s390_pcihost_realize;
+    dc->unrealize = s390_pcihost_unrealize;
     hc->pre_plug = s390_pcihost_pre_plug;
     hc->plug = s390_pcihost_plug;
     hc->unplug_request = s390_pcihost_unplug_request;