diff --git a/reactos/hal/halx86/generic/cmos.c b/reactos/hal/halx86/generic/cmos.c
index 14cd589b0e5..afc698e7034 100644
--- a/reactos/hal/halx86/generic/cmos.c
+++ b/reactos/hal/halx86/generic/cmos.c
@@ -19,8 +19,8 @@ KSPIN_LOCK HalpSystemHardwareLock;
 
 /* PRIVATE FUNCTIONS *********************************************************/
 
-UCHAR
 FORCEINLINE
+UCHAR
 HalpReadCmos(IN UCHAR Reg)
 {
     /* Select the register */
@@ -30,8 +30,8 @@ HalpReadCmos(IN UCHAR Reg)
     return READ_PORT_UCHAR(CMOS_DATA_PORT);
 }
 
-VOID
 FORCEINLINE
+VOID
 HalpWriteCmos(IN UCHAR Reg,
               IN UCHAR Value)
 {
diff --git a/reactos/hal/halx86/generic/dma.c b/reactos/hal/halx86/generic/dma.c
index 82e40cb7b4a..e664cf90cfe 100644
--- a/reactos/hal/halx86/generic/dma.c
+++ b/reactos/hal/halx86/generic/dma.c
@@ -1073,7 +1073,7 @@ HalAllocateAdapterChannel(
 {
    PADAPTER_OBJECT MasterAdapter;
    PGROW_WORK_ITEM WorkItem;
-   ULONG Index = ~0;
+   ULONG Index = ~0U;
    ULONG Result;
    KIRQL OldIrql;
 
@@ -1129,7 +1129,7 @@ HalAllocateAdapterChannel(
       {
          Index = RtlFindClearBitsAndSet(
             MasterAdapter->MapRegisters, NumberOfMapRegisters, 0);
-         if (Index != ~0)
+         if (Index != ~0U)
          {
             AdapterObject->MapRegisterBase =
                MasterAdapter->MapRegisterBase + Index;
@@ -1143,7 +1143,7 @@ HalAllocateAdapterChannel(
          }
       }
 
-      if (Index == ~0)
+      if (Index == ~0U)
       {
          WorkItem = ExAllocatePoolWithTag(
             NonPagedPool, sizeof(GROW_WORK_ITEM), TAG_DMA);
@@ -1287,7 +1287,7 @@ IoFreeAdapterChannel(
             Index = RtlFindClearBitsAndSet(
                MasterAdapter->MapRegisters,
                WaitContextBlock->NumberOfMapRegisters, 0);
-            if (Index != ~0)
+            if (Index != ~0U)
             {
                AdapterObject->MapRegisterBase =
                   MasterAdapter->MapRegisterBase + Index;
@@ -1301,7 +1301,7 @@ IoFreeAdapterChannel(
             }
          }
 
-         if (Index == ~0)
+         if (Index == ~0U)
          {
             InsertTailList(&MasterAdapter->AdapterQueue, &AdapterObject->AdapterQueue);
             KfReleaseSpinLock(&MasterAdapter->SpinLock, OldIrql);
@@ -1404,7 +1404,7 @@ IoFreeMapRegisters(
          MasterAdapter->MapRegisters,
          AdapterObject->NumberOfMapRegisters,
          MasterAdapter->NumberOfMapRegisters);
-      if (Index == ~0)
+      if (Index == ~0U)
       {
          InsertHeadList(&MasterAdapter->AdapterQueue, ListEntry);
          break;
@@ -1602,7 +1602,7 @@ IoFlushAdapterBuffers(
    {
       if ((ULONG_PTR)MapRegisterBase & MAP_BASE_SW_SG)
       {
-         if (RealMapRegisterBase->Counter != ~0)
+         if (RealMapRegisterBase->Counter != ~0U)
          {
             if (SlaveDma && !AdapterObject->IgnoreCount)
                Length -= HalReadDmaCounter(AdapterObject);
@@ -1984,13 +1984,12 @@ HalAllocateCrashDumpRegisters(IN PADAPTER_OBJECT AdapterObject,
         }
 
         /* Try to find free map registers */
-        MapRegisterNumber = -1;
         MapRegisterNumber = RtlFindClearBitsAndSet(MasterAdapter->MapRegisters,
                                                    *NumberOfMapRegisters,
                                                    0);
 
         /* Check if nothing was found */
-        if (MapRegisterNumber == -1)
+        if (MapRegisterNumber == -1U)
         {
             /* No free registers found, so use the base registers */
             RtlSetBits(MasterAdapter->MapRegisters,
diff --git a/reactos/hal/halx86/generic/pci.c b/reactos/hal/halx86/generic/pci.c
index 9bdabddb812..c7f6e222c5c 100644
--- a/reactos/hal/halx86/generic/pci.c
+++ b/reactos/hal/halx86/generic/pci.c
@@ -81,10 +81,10 @@ PCIPBUSDATA HalpFakePciBusData =
         HalpWritePCIConfig,
         NULL,
         NULL,
-        {{{0}}},
+        {{{0, 0, 0}}},
         {0, 0, 0, 0}
     },
-    {{0}},
+    {{0, 0}},
     32,
 };
 
diff --git a/reactos/hal/halx86/generic/reboot.c b/reactos/hal/halx86/generic/reboot.c
index bac0b4153ec..c9a1219c2c9 100644
--- a/reactos/hal/halx86/generic/reboot.c
+++ b/reactos/hal/halx86/generic/reboot.c
@@ -29,7 +29,7 @@ HalpReboot(VOID)
 {
     UCHAR Data;
     PVOID HalpZeroPageMapping;
-    PHYSICAL_ADDRESS Null = {{0}};
+    PHYSICAL_ADDRESS Null = {{0, 0}};
 
     /* Enable warm reboot */
     HalpZeroPageMapping = MmMapIoSpace(Null, PAGE_SIZE, MmNonCached);