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OvmfPkg: VirtioNetDxe: fix some build errors emitted by Visual Studio 

These were found with the gcc-4.4 option "-Wconversion" after Jordan
reported the build failure under Visual Studio. The patch was originally
posted to edk2-devel as "silence.patch":

http://thread.gmane.org/gmane.comp.bios.tianocore.devel/2804/focus=2972

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14419 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Laszlo Ersek 2013-06-14 07:40:59 +00:00 committed by jljusten
parent 65575e4f13
commit 9f3acbb5c9
2 changed files with 10 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
OvmfPkg/VirtioNetDxe/SnpInitialize.c
View File

@ -120,7 +120,8 @@ VirtioNetInitTx (
{
UINTN PktIdx;
Dev->TxMaxPending = MIN (Dev->TxRing.QueueSize / 2, VNET_MAX_PENDING);
Dev->TxMaxPending = (UINT16) MIN (Dev->TxRing.QueueSize / 2,
VNET_MAX_PENDING);
Dev->TxCurPending = 0;
Dev->TxFreeStack = AllocatePool (Dev->TxMaxPending *
sizeof *Dev->TxFreeStack);
@ -141,7 +142,7 @@ VirtioNetInitTx (
Dev->TxRing.Desc[DescIdx].Addr = (UINTN) &Dev->TxSharedReq;
Dev->TxRing.Desc[DescIdx].Len = sizeof Dev->TxSharedReq;
Dev->TxRing.Desc[DescIdx].Flags = VRING_DESC_F_NEXT;
Dev->TxRing.Desc[DescIdx].Next = DescIdx + 1;
Dev->TxRing.Desc[DescIdx].Next = (UINT16) (DescIdx + 1);
//
// The second descriptor of each pending TX packet is updated on the fly,
@ -221,7 +222,7 @@ VirtioNetInitRx (
// Limit the number of pending RX packets if the queue is big. The division
// by two is due to the above "two descriptors per packet" trait.
//
RxAlwaysPending = MIN (Dev->RxRing.QueueSize / 2, VNET_MAX_PENDING);
RxAlwaysPending = (UINT16) MIN (Dev->RxRing.QueueSize / 2, VNET_MAX_PENDING);
Dev->RxBuf = AllocatePool (RxAlwaysPending * RxBufSize);
if (Dev->RxBuf == NULL) {
@ -261,11 +262,12 @@ VirtioNetInitRx (
Dev->RxRing.Desc[DescIdx].Addr = (UINTN) RxPtr;
Dev->RxRing.Desc[DescIdx].Len = sizeof (VIRTIO_NET_REQ);
Dev->RxRing.Desc[DescIdx].Flags = VRING_DESC_F_WRITE | VRING_DESC_F_NEXT;
Dev->RxRing.Desc[DescIdx].Next = DescIdx + 1;
Dev->RxRing.Desc[DescIdx].Next = (UINT16) (DescIdx + 1);
RxPtr += Dev->RxRing.Desc[DescIdx++].Len;
Dev->RxRing.Desc[DescIdx].Addr = (UINTN) RxPtr;
Dev->RxRing.Desc[DescIdx].Len = RxBufSize - sizeof (VIRTIO_NET_REQ);
Dev->RxRing.Desc[DescIdx].Len = (UINT32) (RxBufSize -
sizeof (VIRTIO_NET_REQ));
Dev->RxRing.Desc[DescIdx].Flags = VRING_DESC_F_WRITE;
RxPtr += Dev->RxRing.Desc[DescIdx++].Len;
}

5
OvmfPkg/VirtioNetDxe/SnpReceive.c
View File

@ -156,7 +156,7 @@ VirtioNetReceive (
RxPtr += SIZE_OF_VNET (VhdrMac);
if (Protocol != NULL) {
*Protocol = ((UINT16) RxPtr[0] << 8) | RxPtr[1];
*Protocol = (UINT16) ((RxPtr[0] << 8) | RxPtr[1]);
}
RxPtr += sizeof (UINT16);
@ -169,7 +169,8 @@ RecycleDesc:
// virtio-0.9.5, 2.4.1 Supplying Buffers to The Device
//
AvailIdx = *Dev->RxRing.Avail.Idx;
Dev->RxRing.Avail.Ring[AvailIdx++ % Dev->RxRing.QueueSize] = DescIdx;
Dev->RxRing.Avail.Ring[AvailIdx++ % Dev->RxRing.QueueSize] =
(UINT16) DescIdx;
MemoryFence ();
*Dev->RxRing.Avail.Idx = AvailIdx;