diff options
| -rw-r--r-- | OvmfPkg/BlockMmioToBlockIoDxe/BlockIo.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/OvmfPkg/BlockMmioToBlockIoDxe/BlockIo.c b/OvmfPkg/BlockMmioToBlockIoDxe/BlockIo.c index bdd1402cc1..cf68ceaae9 100644 --- a/OvmfPkg/BlockMmioToBlockIoDxe/BlockIo.c +++ b/OvmfPkg/BlockMmioToBlockIoDxe/BlockIo.c @@ -109,11 +109,11 @@ ReadOrWriteBlocks ( //
// BufferSize must be a multiple of the intrinsic block size of the device.
//
- if ((BufferSize % Media->BlockSize) != 0) {
+ if (ModU64x32 (BufferSize, Media->BlockSize) != 0) {
return EFI_BAD_BUFFER_SIZE;
}
- TotalBlock = BufferSize / Media->BlockSize;
+ TotalBlock = (UINTN) DivU64x32 (BufferSize, Media->BlockSize);
//
// Make sure the range to read is valid.
@@ -131,9 +131,9 @@ ReadOrWriteBlocks ( }
Address = Private->BlockMmio->BaseAddress;
- Address += Media->BlockSize * Lba;
+ Address += MultU64x32 (Lba, Media->BlockSize);
- Count = BufferSize / 8;
+ Count = BufferSize >> 3;
if (ReadData) {
CpuAccessFunction = Private->CpuIo->Mem.Read;
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