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[PORTCLS] Do not rely on operator new to zero memory.

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The standard operator new does not do this, and GCC will in fact
optimize out any zeroing done in the operator.
This commit is contained in:
Thomas Faber
2022-01-16 23:02:39 -05:00
parent 418edcd2bf
commit ec1eb52ebf
2 changed files with 49 additions and 10 deletions
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24
drivers/wdm/audio/backpln/portcls/dma_slave.cpp
View File

@@ -24,10 +24,7 @@ public:
POOL_TYPE PoolType,
ULONG Tag)
{
PVOID P = ExAllocatePoolWithTag(PoolType, Size, Tag);
if (P)
RtlZeroMemory(P, Size);
return P;
return ExAllocatePoolWithTag(PoolType, Size, Tag);
}
STDMETHODIMP QueryInterface( REFIID InterfaceId, PVOID* Interface);
@@ -49,7 +46,24 @@ public:
return m_Ref;
}
IMP_IDmaChannelInit;
CDmaChannelInit(IUnknown * OuterUnknown){}
CDmaChannelInit(IUnknown * OuterUnknown) :
m_pDeviceObject(nullptr),
m_pAdapter(nullptr),
m_DmaStarted(FALSE),
m_MapSize(0),
m_MapRegisterBase(nullptr),
m_LastTransferCount(0),
m_MaximumBufferSize(0),
m_MaxMapRegisters(0),
m_AllocatedBufferSize(0),
m_BufferSize(0),
m_Address({0}),
m_Buffer(nullptr),
m_Mdl(nullptr),
m_WriteToDevice(FALSE),
m_Ref(0)
{
}
virtual ~CDmaChannelInit(){}
protected:

35
drivers/wdm/audio/backpln/portcls/pin_wavecyclic.cpp
View File

@@ -25,10 +25,7 @@ public:
POOL_TYPE PoolType,
ULONG Tag)
{
PVOID P = ExAllocatePoolWithTag(PoolType, Size, Tag);
if (P)
RtlZeroMemory(P, Size);
return P;
return ExAllocatePoolWithTag(PoolType, Size, Tag);
}
STDMETHODIMP QueryInterface( REFIID InterfaceId, PVOID* Interface);
@@ -51,7 +48,35 @@ public:
}
IMP_IPortPinWaveCyclic;
IMP_IServiceSink;
CPortPinWaveCyclic(IUnknown *OuterUnknown){}
CPortPinWaveCyclic(IUnknown *OuterUnknown) :
m_Port(nullptr),
m_Filter(nullptr),
m_KsPinDescriptor(nullptr),
m_Miniport(nullptr),
m_ServiceGroup(nullptr),
m_DmaChannel(nullptr),
m_Stream(nullptr),
m_State(KSSTATE_STOP),
m_Format(nullptr),
m_ConnectDetails(nullptr),
m_CommonBuffer(nullptr),
m_CommonBufferSize(0),
m_CommonBufferOffset(0),
m_IrpQueue(nullptr),
m_FrameSize(0),
m_Capture(FALSE),
m_TotalPackets(0),
m_StopCount(0),
m_Position({0}),
m_AllocatorFraming({{0}}),
m_Descriptor(nullptr),
m_EventListLock(0),
m_EventList({nullptr}),
m_ResetState(KSRESET_BEGIN),
m_Delay(0),
m_Ref(0)
{
}
virtual ~CPortPinWaveCyclic(){}
protected: