From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Date: Wed, 3 Nov 2021 19:46:43 +0100
Subject: ACPI: Drop ACPI_USE_BUILTIN_STDARG ifdef from acgcc.h
Patch-mainline: v5.16-rc1
Git-commit: 63b0a7b16f06b087e6ed4cc5c58f57e92847f3d9
References: jsc#PED-1408

The ACPI_USE_BUILTIN_STDARG symbol is never set in the kernel build,
so stop checking it in include/acpi/platform/acgcc.h and drop all of
the macros depending on it (which appear to duplicate the analogous
macros from linux/stdarg.h, but in fact are never used).

Link: https://lore.kernel.org/linux-acpi/CAHk-=whCammRsz8PEbrft3M6vGjF506gkxtyGw81uGOUUvD51g@mail.gmail.com/
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Linus Torvalds <torvalds@linuxfoundation.org>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
 include/acpi/platform/acgcc.h |   13 -------------
 1 file changed, 13 deletions(-)

--- a/include/acpi/platform/acgcc.h
+++ b/include/acpi/platform/acgcc.h
@@ -10,25 +10,12 @@
 #ifndef __ACGCC_H__
 #define __ACGCC_H__
 
-/*
- * Use compiler specific <stdarg.h> is a good practice for even when
- * -nostdinc is specified (i.e., ACPI_USE_STANDARD_HEADERS undefined.
- */
 #ifndef va_arg
-#ifdef ACPI_USE_BUILTIN_STDARG
-typedef __builtin_va_list va_list;
-#define va_start(v, l)          __builtin_va_start(v, l)
-#define va_end(v)               __builtin_va_end(v)
-#define va_arg(v, l)            __builtin_va_arg(v, l)
-#define va_copy(d, s)           __builtin_va_copy(d, s)
-#else
 #ifdef __KERNEL__
 #include <linux/stdarg.h>
 #else
-/* Used to build acpi tools */
 #include <stdarg.h>
 #endif /* __KERNEL__ */
-#endif /* ACPI_USE_BUILTIN_STDARG */
 #endif /* ! va_arg */
  
 #define ACPI_INLINE             __inline__