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[ISAPNP] Mark read data port as started, even if no ISAPNP card is present

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CORE-17056
This commit is contained in:
Hervé Poussineau 2020-05-16 23:17:19 +02:00
parent f454f4dc21
commit e246b9947e
1 changed files with 9 additions and 3 deletions
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12
drivers/bus/isapnp/pdo.c
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@ -191,7 +191,7 @@ IsaPdoStartReadPort(
IN PIO_STACK_LOCATION IrpSp)
{
PCM_RESOURCE_LIST ResourceList = IrpSp->Parameters.StartDevice.AllocatedResources;
NTSTATUS Status = STATUS_INVALID_PARAMETER;
NTSTATUS Status = STATUS_INSUFFICIENT_RESOURCES;
KIRQL OldIrql;
ULONG i;
@ -209,11 +209,12 @@ IsaPdoStartReadPort(
for (i = 0; i < ResourceList->List[0].PartialResourceList.Count; i++)
{
PCM_PARTIAL_RESOURCE_DESCRIPTOR PartialDescriptor = &ResourceList->List[0].PartialResourceList.PartialDescriptors[i];
if (PartialDescriptor->Type == CmResourceTypePort)
if (PartialDescriptor->Type == CmResourceTypePort && PartialDescriptor->u.Port.Length > 1 && !FdoExt->ReadDataPort)
{
PUCHAR ReadDataPort = ULongToPtr(PartialDescriptor->u.Port.Start.u.LowPart + 3);
if (PartialDescriptor->u.Port.Length > 1 && !FdoExt->ReadDataPort && NT_SUCCESS(IsaHwTryReadDataPort(ReadDataPort)))
if (NT_SUCCESS(IsaHwTryReadDataPort(ReadDataPort)))
{
/* we detected some ISAPNP cards */
FdoExt->ReadDataPort = ReadDataPort;
KeAcquireSpinLock(&FdoExt->Lock, &OldIrql);
Status = IsaHwFillDeviceList(FdoExt);
@ -224,6 +225,11 @@ IsaPdoStartReadPort(
IoInvalidateDeviceRelations(FdoExt->DataPortPdo, RemovalRelations);
}
}
else
{
/* mark read data port as started, even if no card has been detected */
Status = STATUS_SUCCESS;
}
}
}
return Status;