acpihp: simplify acpi_pcihp_disable_root_bus

Get rid of the static variable that keeps track of whether hotplug has been
disabled on the root pci bus. Simply use qbus_is_hotpluggable() api to
perform the same check. This eliminates additional if conditional and
simplifies the function.

Signed-off-by: Ani Sinha <ani@anisinha.ca>
Message-Id: <1640764674-7784-1-git-send-email-ani@anirban.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 2 insertions, 7 deletions

diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c
index a5e182d..6befd23 100644
--- a/hw/acpi/pcihp.c
+++ b/hw/acpi/pcihp.c
@@ -128,20 +128,15 @@ static void acpi_set_pci_info(void)
 
 static void acpi_pcihp_disable_root_bus(void)
 {
-    static bool root_hp_disabled;
     Object *host = acpi_get_i386_pci_host();
     PCIBus *bus;
 
-    if (root_hp_disabled) {
-        return;
-    }
-
     bus = PCI_HOST_BRIDGE(host)->bus;
-    if (bus) {
+    if (bus && qbus_is_hotpluggable(BUS(bus))) {
         /* setting the hotplug handler to NULL makes the bus non-hotpluggable */
         qbus_set_hotplug_handler(BUS(bus), NULL);
     }
-    root_hp_disabled = true;
+
     return;
 }