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s390/pci: adapt events for zbus 

Simplify the event handling.
Set the zpci state explicitly.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Pierre Morel 2020-03-25 17:55:55 +01:00 committed by Vasily Gorbik
parent 05bc1be6db
commit f606b3ef47
1 changed files with 8 additions and 16 deletions
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24
arch/s390/pci/pci_event.c
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@ -89,25 +89,19 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf)
switch (ccdf->pec) {
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);
ret = clp_add_pci_device(ccdf->fid, ccdf->fh, 1);
break;
}
if (!zdev || zdev->state != ZPCI_FN_STATE_STANDBY)
break;
zdev->state = ZPCI_FN_STATE_CONFIGURED;
zdev->fh = ccdf->fh;
ret = zpci_enable_device(zdev);
if (ret)
break;
pci_lock_rescan_remove();
pci_rescan_bus(zdev->zbus->bus);
pci_unlock_rescan_remove();
zdev->state = ZPCI_FN_STATE_CONFIGURED;
zpci_create_device(zdev);
break;
case 0x0302: /* Reserved -> Standby */
if (!zdev)
if (!zdev) {
clp_add_pci_device(ccdf->fid, ccdf->fh, 0);
break;
}
zdev->fh = ccdf->fh;
break;
case 0x0303: /* Deconfiguration requested */
if (!zdev)
@ -135,8 +129,6 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf)
pci_stop_and_remove_bus_device_locked(pdev);
}
zdev->fh = ccdf->fh;
zpci_disable_device(zdev);
zdev->state = ZPCI_FN_STATE_STANDBY;
if (!clp_get_state(ccdf->fid, &state) &&
state == ZPCI_FN_STATE_RESERVED) {