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s390/pci: set error state for unavailable functions 

If we receive a notification that a pci function became unavailable we clean
up by removing the pci device. This can confuse the driver since the function
is already unaccessible. Improve this situation by setting an appropriate
error_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 2013-12-12 17:53:11 +01:00 committed by Martin Schwidefsky
parent 704268925d
commit 0c0c277692
1 changed files with 5 additions and 1 deletions
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6
arch/s390/pci/pci_event.c
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@ -102,8 +102,12 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf)
break;
case 0x0304: /* Configured -> Standby */
if (pdev)
if (pdev) {
/* Give the driver a hint that the function is
* already unusable. */
pdev->error_state = pci_channel_io_perm_failure;
pci_stop_and_remove_bus_device(pdev);
}
zpci_disable_device(zdev);
zdev->state = ZPCI_FN_STATE_STANDBY;