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Commit 7fc611ff authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
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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: default avatarGerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 0c36b8ac

arch/s390/pci/pci_event.c

+7 −1
Original line number Diff line number Diff line
@@ -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;