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s390/pci: obtain function handle in hotplug notifier

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When using the CLP interface to enable or disable a pci device a
valid function handle needs to be delivered. So far our assumption
was that we always have an up-to-date version of the function handle
(since it doesn't change when the device is in use). This assumption
is incorrect if the pci device is enabled or disabled outside of our
control. When we are notified about such a change we already receive
the new function handle. Just use it.

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 2013-12-18 16:46:02 +01:00 committed by Martin Schwidefsky
parent 36d9f4d3b6
commit fcf2f40293
1 changed files with 2 additions and 0 deletions
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2
arch/s390/pci/pci_event.c
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@ -75,6 +75,7 @@ void zpci_event_availability(void *data)
if (!zdev || zdev->state == ZPCI_FN_STATE_CONFIGURED)
break;
zdev->state = ZPCI_FN_STATE_CONFIGURED;
zdev->fh = ccdf->fh;
ret = zpci_enable_device(zdev);
if (ret)
break;
@ -101,6 +102,7 @@ void zpci_event_availability(void *data)
if (pdev)
pci_stop_and_remove_bus_device(pdev);
zdev->fh = ccdf->fh;
zpci_disable_device(zdev);
zdev->state = ZPCI_FN_STATE_STANDBY;
break;