diff options
| -rw-r--r-- | OvmfPkg/VirtioBlkDxe/VirtioBlk.c | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/OvmfPkg/VirtioBlkDxe/VirtioBlk.c b/OvmfPkg/VirtioBlkDxe/VirtioBlk.c index 74ed52f9da..f881cde4c5 100644 --- a/OvmfPkg/VirtioBlkDxe/VirtioBlk.c +++ b/OvmfPkg/VirtioBlkDxe/VirtioBlk.c @@ -13,6 +13,7 @@ Copyright (C) 2012, Red Hat, Inc.
Copyright (c) 2012 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2017, AMD Inc, All rights reserved.<BR>
+ Copyright (c) 2024, Arm Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -240,7 +241,7 @@ SynchronousRequest ( )
{
UINT32 BlockSize;
- volatile VIRTIO_BLK_REQ Request;
+ volatile VIRTIO_BLK_REQ *Request;
volatile UINT8 *HostStatus;
VOID *HostStatusBuffer;
DESC_INDICES Indices;
@@ -273,15 +274,20 @@ SynchronousRequest ( //
ASSERT (BufferSize % BlockSize == 0);
+ Request = AllocateZeroPool (sizeof (*Request));
+ if (Request == NULL) {
+ return EFI_DEVICE_ERROR;
+ }
+
//
// Prepare virtio-blk request header, setting zero size for flush.
// IO Priority is homogeneously 0.
//
- Request.Type = RequestIsWrite ?
- (BufferSize == 0 ? VIRTIO_BLK_T_FLUSH : VIRTIO_BLK_T_OUT) :
- VIRTIO_BLK_T_IN;
- Request.IoPrio = 0;
- Request.Sector = MultU64x32 (Lba, BlockSize / 512);
+ Request->Type = RequestIsWrite ?
+ (BufferSize == 0 ? VIRTIO_BLK_T_FLUSH : VIRTIO_BLK_T_OUT) :
+ VIRTIO_BLK_T_IN;
+ Request->IoPrio = 0;
+ Request->Sector = MultU64x32 (Lba, BlockSize / 512);
//
// Host status is bi-directional (we preset with a value and expect the
@@ -294,7 +300,8 @@ SynchronousRequest ( &HostStatusBuffer
);
if (EFI_ERROR (Status)) {
- return EFI_DEVICE_ERROR;
+ Status = EFI_DEVICE_ERROR;
+ goto FreeBlkRequest;
}
HostStatus = HostStatusBuffer;
@@ -306,8 +313,8 @@ SynchronousRequest ( Status = VirtioMapAllBytesInSharedBuffer (
Dev->VirtIo,
VirtioOperationBusMasterRead,
- (VOID *)&Request,
- sizeof Request,
+ (VOID *)Request,
+ sizeof (*Request),
&RequestDeviceAddress,
&RequestMapping
);
@@ -372,7 +379,7 @@ SynchronousRequest ( VirtioAppendDesc (
&Dev->Ring,
RequestDeviceAddress,
- sizeof Request,
+ sizeof (*Request),
VRING_DESC_F_NEXT,
&Indices
);
@@ -454,6 +461,9 @@ FreeHostStatusBuffer: HostStatusBuffer
);
+FreeBlkRequest:
+ FreePool ((VOID *)Request);
+
return Status;
}
|