Al's commit e1b5bb6d1236d4ad2084c53aa83dde7cdf6f8eea ("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." clean up the whole mess around symbol prefixes, so this patch
just attempts to fix the build in the mean time. 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 <james.ho...@imgtec.com>
Cc: Al Viro <v...@zeniv.linux.org.uk>
Cc: Rusty Russell <ru...@rustcorp.com.au>
Cc: Mike Frysinger <vap...@gentoo.org>
Cc: uclinux-dist-devel@blackfin.uclinux.org
---
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 829d66c..de09dec 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) \
--
1.8.1.2
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