From 08c5f84a4f75e40efcfe0c2ca67b921070c8643e Mon Sep 17 00:00:00 2001
From: Jung-uk Kim <jkim@FreeBSD.org>
Date: Tue, 28 Feb 2023 19:30:59 -0500
Subject: Remove write-only variables

This fixes build with Clang 15 and later.
---
 source/common/dmextern.c        |  8 --------
 source/compiler/aslrestype2s.c  | 18 ------------------
 source/tools/acpisrc/asconvrt.c |  5 -----
 3 files changed, 31 deletions(-)

diff --git a/source/common/dmextern.c b/source/common/dmextern.c
index 3a413f43d..6827d5e5f 100644
--- a/source/common/dmextern.c
+++ b/source/common/dmextern.c
@@ -1493,7 +1493,6 @@ AcpiDmMarkExternalConflict (
     ACPI_EXTERNAL_LIST      *ExternalList = AcpiGbl_ExternalList;
     char                    *ExternalPath;
     char                    *InternalPath;
-    char                    *Temp;
     ACPI_STATUS             Status;
 
 
@@ -1526,13 +1525,6 @@ AcpiDmMarkExternalConflict (
 
     while (ExternalList)
     {
-        Temp = ExternalList->InternalPath;
-        if ((*ExternalList->InternalPath == AML_ROOT_PREFIX) &&
-            (ExternalList->InternalPath[1]))
-        {
-            Temp++;
-        }
-
         if (!strcmp (ExternalList->InternalPath, InternalPath))
         {
             ExternalList->Flags |= ACPI_EXT_CONFLICTING_DECLARATION;
diff --git a/source/compiler/aslrestype2s.c b/source/compiler/aslrestype2s.c
index cdb467ff1..054807964 100644
--- a/source/compiler/aslrestype2s.c
+++ b/source/compiler/aslrestype2s.c
@@ -1550,7 +1550,6 @@ RsDoPinFunctionDescriptor (
     UINT16                  PinListLength;
     UINT16                  DescriptorSize;
     UINT32                  CurrentByteOffset;
-    UINT32                  PinCount = 0;
     UINT32                  i;
 
     InitializerOp = Info->DescriptorTypeOp->Asl.Child;
@@ -1668,15 +1667,10 @@ RsDoPinFunctionDescriptor (
         default:
             /*
              * PINs come through here, repeatedly. Each PIN must be a WORD.
-             * NOTE: there is no "length" field for this, so from ACPI spec:
-             *  The number of pins in the table can be calculated from:
-             *  PinCount = (Resource Source Name Offset - Pin Table Offset) / 2
-             *  (implies resource source must immediately follow the pin list.)
              *  Name: _PIN
              */
             *PinList = (UINT16) InitializerOp->Asl.Value.Integer;
             PinList++;
-            PinCount++;
 
             /* Case 8: First pin number in list */
 
@@ -1845,7 +1839,6 @@ RsDoPinConfigDescriptor (
     UINT16                  PinListLength;
     UINT16                  DescriptorSize;
     UINT32                  CurrentByteOffset;
-    UINT32                  PinCount = 0;
     UINT32                  i;
 
     InitializerOp = Info->DescriptorTypeOp->Asl.Child;
@@ -1977,15 +1970,10 @@ RsDoPinConfigDescriptor (
         default:
             /*
              * PINs come through here, repeatedly. Each PIN must be a WORD.
-             * NOTE: there is no "length" field for this, so from ACPI spec:
-             *  The number of pins in the table can be calculated from:
-             *  PinCount = (Resource Source Name Offset - Pin Table Offset) / 2
-             *  (implies resource source must immediately follow the pin list.)
              *  Name: _PIN
              */
             *PinList = (UINT16) InitializerOp->Asl.Value.Integer;
             PinList++;
-            PinCount++;
 
             /* Case 8: First pin number in list */
 
@@ -2045,7 +2033,6 @@ RsDoPinGroupDescriptor (
     UINT16                  PinListLength;
     UINT16                  DescriptorSize;
     UINT32                  CurrentByteOffset;
-    UINT32                  PinCount = 0;
     UINT32                  i;
 
     InitializerOp = Info->DescriptorTypeOp->Asl.Child;
@@ -2131,15 +2118,10 @@ RsDoPinGroupDescriptor (
         default:
             /*
              * PINs come through here, repeatedly. Each PIN must be a WORD.
-             * NOTE: there is no "length" field for this, so from ACPI spec:
-             *  The number of pins in the table can be calculated from:
-             *  PinCount = (Resource Source Name Offset - Pin Table Offset) / 2
-             *  (implies resource source must immediately follow the pin list.)
              *  Name: _PIN
              */
             *PinList = (UINT16) InitializerOp->Asl.Value.Integer;
             PinList++;
-            PinCount++;
 
             /* Case 3: First pin number in list */
 
diff --git a/source/tools/acpisrc/asconvrt.c b/source/tools/acpisrc/asconvrt.c
index ea97400a8..0027e45a9 100644
--- a/source/tools/acpisrc/asconvrt.c
+++ b/source/tools/acpisrc/asconvrt.c
@@ -1230,7 +1230,6 @@ AsTabify8 (
     char                    *NewSubBuffer;
     char                    *CommentEnd = NULL;
     UINT32                  SpaceCount = 0;
-    UINT32                  Column = 0;
     UINT32                  TabCount = 0;
     UINT32                  LastLineTabCount = 0;
     UINT32                  LastLineColumnStart = 0;
@@ -1246,7 +1245,6 @@ AsTabify8 (
             /* This is a standalone blank line */
 
             FirstNonBlank = NULL;
-            Column = 0;
             SpaceCount = 0;
             TabCount = 0;
             SubBuffer++;
@@ -1285,8 +1283,6 @@ AsTabify8 (
             }
         }
 
-        Column++;
-
         /* Check if we are in a comment */
 
         if ((SubBuffer[0] == '*') &&
@@ -1379,7 +1375,6 @@ AsTabify8 (
 
             FirstNonBlank = NULL;
             LastLineColumnStart = ThisColumnStart;
-            Column = 0;
             SpaceCount = 0;
         }
         else
-- 
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