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s390/pci: obtain function handle in hotplug notifier
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>
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@ -75,6 +75,7 @@ void zpci_event_availability(void *data)
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if (!zdev || zdev->state == ZPCI_FN_STATE_CONFIGURED)
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break;
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zdev->state = ZPCI_FN_STATE_CONFIGURED;
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zdev->fh = ccdf->fh;
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ret = zpci_enable_device(zdev);
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if (ret)
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break;
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@ -101,6 +102,7 @@ void zpci_event_availability(void *data)
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if (pdev)
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pci_stop_and_remove_bus_device(pdev);
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zdev->fh = ccdf->fh;
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zpci_disable_device(zdev);
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zdev->state = ZPCI_FN_STATE_STANDBY;
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break;
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