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s390/pci: improve handling of hotplug event 0x301

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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>
This commit is contained in:
Sebastian Ott
2015-06-16 18:58:37 +02:00
committed by Martin Schwidefsky
parent 0c36b8ac70
commit 7fc611ff3f
1 changed files with 7 additions and 1 deletions
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8
arch/s390/pci/pci_event.c
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@@ -75,7 +75,13 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf)
zpci_err_hex(ccdf, sizeof(*ccdf)); zpci_err_hex(ccdf, sizeof(*ccdf));
switch (ccdf->pec) { 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) if (!zdev || zdev->state != ZPCI_FN_STATE_STANDBY)
break; break;
zdev->state = ZPCI_FN_STATE_CONFIGURED; zdev->state = ZPCI_FN_STATE_CONFIGURED;