linux-kernel - [PATCH v2 1/1] linux/bitfield.h: replace __auto

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Message-ID: <20251217012153.1628723-1-hpa@zytor.com>
Date: Tue, 16 Dec 2025 17:21:53 -0800
From: "H. Peter Anvin" <hpa@...or.com>
To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
        "H. Peter Anvin" <hpa@...or.com>, Yury Norov <yury.norov@...il.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>
Subject: [PATCH v2 1/1] linux/bitfield.h: replace __auto_type with auto

Replace "__auto_type" as described in commit:

2fb6915fa22d compiler_types.h: add "auto" as a macro for "__auto_type"

[ v2: add an explicit #include <linux/compiler.h> to this header ]

Cc: Yury Norov <yury.norov@...il.com> (maintainer:BITMAP API)
Cc: Rasmus Villemoes <linux@...musvillemoes.dk> (reviewer:BITMAP API)
Signed-off-by: H. Peter Anvin (Intel) <hpa@...or.com>
---
 include/linux/bitfield.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/include/linux/bitfield.h b/include/linux/bitfield.h
index 126dc5b380af..7c3fff2437d4 100644
--- a/include/linux/bitfield.h
+++ b/include/linux/bitfield.h
@@ -7,6 +7,7 @@
 #ifndef _LINUX_BITFIELD_H
 #define _LINUX_BITFIELD_H
 
+#include <linux/compiler.h>
 #include <linux/build_bug.h>
 #include <linux/typecheck.h>
 #include <asm/byteorder.h>
@@ -243,7 +244,7 @@ __MAKE_OP(64)
 
 #define __field_prep(mask, val)						\
 	({								\
-		__auto_type __mask = (mask);				\
+		auto __mask = (mask);					\
 		typeof(__mask) __val = (val);				\
 		unsigned int __shift = BITS_PER_TYPE(__mask) <= 32 ?	\
 				       __ffs(__mask) : __ffs64(__mask);	\
@@ -252,7 +253,7 @@ __MAKE_OP(64)
 
 #define __field_get(mask, reg)						\
 	({								\
-		__auto_type __mask = (mask);				\
+		auto __mask = (mask);					\
 		typeof(__mask) __reg =  (reg);				\
 		unsigned int __shift = BITS_PER_TYPE(__mask) <= 32 ?	\
 				       __ffs(__mask) : __ffs64(__mask);	\
-- 
2.52.0