s390/pci: improve handling of hotplug event 0x301
Hypervisors may deliver event 0x301 not only for standby
but also for reserved devices.
Just handle event 0x301 regardless of the device's state.
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/pci/pci_event.c b/arch/s390/pci/pci_event.c
index 460fdb2..ed2394d 100644
--- a/arch/s390/pci/pci_event.c
+++ b/arch/s390/pci/pci_event.c
@@ -75,7 +75,13 @@
zpci_err_hex(ccdf, sizeof(*ccdf));
switch (ccdf->pec) {
- case 0x0301: /* Standby -> Configured */
+ case 0x0301: /* Reserved|Standby -> Configured */
+ if (!zdev) {
+ ret = clp_add_pci_device(ccdf->fid, ccdf->fh, 0);
+ if (ret)
+ break;
+ zdev = get_zdev_by_fid(ccdf->fid);
+ }
if (!zdev || zdev->state != ZPCI_FN_STATE_STANDBY)
break;
zdev->state = ZPCI_FN_STATE_CONFIGURED;