[PATCH] x86, asmlinkage: Fix warning in xen asmlinkage change v2

[Andi Kleen]

From: Andi Kleen <a...@linux.intel.com>

Current code uses asmlinkage for functions without arguments.
This adds an implicit regparm(0) which creates a warning
when assigning the function to pointers.
Use __visible for the functions without arguments.
This avoids having to add regparm(0) to function pointers.
Since they have no arguments it does not make any difference.

Signed-off-by: Andi Kleen <a...@linux.intel.com>
---
arch/x86/xen/xen-ops.h | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
index d380213..95f8c61 100644
--- a/arch/x86/xen/xen-ops.h
+++ b/arch/x86/xen/xen-ops.h
@@ -105,7 +105,7 @@ static inline void __init xen_init_apic(void)
/* Declare an asm function, along with symbols needed to make it
inlineable */
#define DECL_ASM(ret, name, ...) \
- asmlinkage ret name(__VA_ARGS__); \
+ __visible ret name(__VA_ARGS__); \
extern char name##_end[] __visible; \
extern char name##_reloc[] __visible

@@ -115,11 +115,11 @@ DECL_ASM(unsigned long, xen_save_fl_direct, void);
DECL_ASM(void, xen_restore_fl_direct, unsigned long);

/* These are not functions, and cannot be called normally */
-asmlinkage void xen_iret(void);
-asmlinkage void xen_sysexit(void);
-asmlinkage void xen_sysret32(void);
-asmlinkage void xen_sysret64(void);
-asmlinkage void xen_adjust_exception_frame(void);
+__visible void xen_iret(void);
+__visible void xen_sysexit(void);
+__visible void xen_sysret32(void);
+__visible void xen_sysret64(void);
+__visible void xen_adjust_exception_frame(void);

extern int xen_panic_handler_init(void);

--
1.8.3.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majo...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

[tip-bot for Andi Kleen]

Commit-ID: eb86b5fd505cb97743d84226140cf247d91a2f03
Gitweb: http://git.kernel.org/tip/eb86b5fd505cb97743d84226140cf247d91a2f03
Author: Andi Kleen <a...@linux.intel.com>
AuthorDate: Wed, 21 Aug 2013 13:07:42 -0700
Committer: Ingo Molnar <mi...@kernel.org>
CommitDate: Thu, 22 Aug 2013 09:17:19 +0200

x86/asmlinkage: Fix warning in xen asmlinkage change

Current code uses asmlinkage for functions without arguments.
This adds an implicit regparm(0) which creates a warning
when assigning the function to pointers.

Use __visible for the functions without arguments.
This avoids having to add regparm(0) to function pointers.
Since they have no arguments it does not make any difference.

Signed-off-by: Andi Kleen <a...@linux.intel.com>

Link: http://lkml.kernel.org/r/1377115662-4865-1-...@firstfloor.org
Signed-off-by: Ingo Molnar <mi...@kernel.org>