diff options
Diffstat (limited to 'OvmfPkg/XenBusDxe/TestAndClearBit.c')
| -rw-r--r-- | OvmfPkg/XenBusDxe/TestAndClearBit.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/OvmfPkg/XenBusDxe/TestAndClearBit.c b/OvmfPkg/XenBusDxe/TestAndClearBit.c index 989ab70358..4d51064718 100644 --- a/OvmfPkg/XenBusDxe/TestAndClearBit.c +++ b/OvmfPkg/XenBusDxe/TestAndClearBit.c @@ -14,12 +14,12 @@ INT32
EFIAPI
TestAndClearBit (
- IN INT32 Bit,
- IN VOID *Address
+ IN INT32 Bit,
+ IN VOID *Address
)
{
- UINT16 Word, Read;
- UINT16 Mask;
+ UINT16 Word, Read;
+ UINT16 Mask;
//
// Calculate the effective address relative to 'Address' based on the
@@ -27,14 +27,15 @@ TestAndClearBit ( // ensure we round towards -Inf, and end up with a positive shift in
// 'Bit', even if 'Bit' itself is negative.
//
- Address = (VOID*)((UINT8*) Address + ((Bit >> 4) * sizeof(UINT16)));
- Mask = 1U << (Bit & 15);
+ Address = (VOID *)((UINT8 *)Address + ((Bit >> 4) * sizeof (UINT16)));
+ Mask = 1U << (Bit & 15);
- for (Word = *(UINT16 *) Address; Word & Mask; Word = Read) {
+ for (Word = *(UINT16 *)Address; Word &Mask; Word = Read) {
Read = InterlockedCompareExchange16 (Address, Word, Word & ~Mask);
if (Read == Word) {
return 1;
}
}
+
return 0;
}
|