summaryrefslogtreecommitdiffstats
path: root/arch/s390/pci
diff options
context:
space:
mode:
authorSebastian Ott <sebott@linux.vnet.ibm.com>2015-06-16 18:58:37 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2015-06-18 15:45:54 +0200
commit7fc611ff3ff1a0b8f5a6569fe75a97d6c70bed6c (patch)
treea03dcbbb7d77dead865832bc9c8eede6c7588e81 /arch/s390/pci
parent0c36b8ac7052eafed952ad3487ed8671dc9dc5f9 (diff)
downloadlinux-7fc611ff3ff1a0b8f5a6569fe75a97d6c70bed6c.tar.bz2
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>
Diffstat (limited to 'arch/s390/pci')
-rw-r--r--arch/s390/pci/pci_event.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/s390/pci/pci_event.c b/arch/s390/pci/pci_event.c
index 460fdb21cf61..ed2394dd14e9 100644
--- a/arch/s390/pci/pci_event.c
+++ b/arch/s390/pci/pci_event.c
@@ -75,7 +75,13 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf)
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;