From 126de6b20bfb82cc19012d5048f11f339ae5a021 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Wed, 1 May 2013 22:04:17 +0100 Subject: [PATCH] linkage.h: fix build breakage due to symbol prefix handling Al's commit e1b5bb6d1236 ("consolidate cond_syscall and SYSCALL_ALIAS declarations") broke the build on blackfin and metag due to the following code: #ifndef SYMBOL_NAME #ifdef CONFIG_SYMBOL_PREFIX #define SYMBOL_NAME(x) CONFIG_SYMBOL_PREFIX ## x #else #define SYMBOL_NAME(x) x #endif #endif #define __SYMBOL_NAME(x) __stringify(SYMBOL_NAME(x)) __stringify literally stringifies CONFIG_SYMBOL_PREFIX ##x, so you get lines like this in kernel/sys_ni.s: .weak CONFIG_SYMBOL_PREFIXsys_quotactl .set CONFIG_SYMBOL_PREFIXsys_quotactl,CONFIG_SYMBOL_PREFIXsys_ni_syscall The patches in Rusty's modules-next tree such as "CONFIG_SYMBOL_PREFIX: cleanup." cleans up the whole mess around symbol prefixes, so this patch just attempts to fix the build in the meantime. The intermediate definition of SYMBOL_NAME above isn't used and is incorrect when CONFIG_SYMBOL_PREFIX is defined as CONFIG_SYMBOL_PREFIX is a quoted string literal, so define __SYMBOL_NAME directly depending on CONFIG_SYMBOL_PREFIX. Signed-off-by: James Hogan Mea-culpa-by: Al Viro Cc: Rusty Russell Cc: Mike Frysinger Cc: uclinux-dist-devel@blackfin.uclinux.org Signed-off-by: Linus Torvalds --- include/linux/linkage.h | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/include/linux/linkage.h b/include/linux/linkage.h index 829d66c67fc2..de09dec25ec3 100644 --- a/include/linux/linkage.h +++ b/include/linux/linkage.h @@ -15,14 +15,11 @@ #define asmlinkage CPP_ASMLINKAGE #endif -#ifndef SYMBOL_NAME #ifdef CONFIG_SYMBOL_PREFIX -#define SYMBOL_NAME(x) CONFIG_SYMBOL_PREFIX ## x +#define __SYMBOL_NAME(x) CONFIG_SYMBOL_PREFIX __stringify(x) #else -#define SYMBOL_NAME(x) x +#define __SYMBOL_NAME(x) __stringify(x) #endif -#endif -#define __SYMBOL_NAME(x) __stringify(SYMBOL_NAME(x)) #ifndef cond_syscall #define cond_syscall(x) asm(".weak\t" __SYMBOL_NAME(x) \ -- 2.39.5