[PATCH 3/8] s390/syscalls: Add pt_regs parameter to SYSCALL_DEFINE0() syscall wrapper

Heiko Carstens
2025-11-13T15:08:02Z

All system call wrappers should match the sys_call_ptr_t type. This is not
the case for system calls without parameters. Add the missing pt_regs
parameter there too.

Note: this is currently not a problem, since the parameter is unused.
However it prevents to create a correctly typed system call table in
C. With the current assembler implementation this works because of
missing type checking.

Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
---
arch/s390/include/asm/syscall_wrapper.h | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/s390/include/asm/syscall_wrapper.h b/arch/s390/include/asm/syscall_wrapper.h
index 35c1d1b860d8..bf1ff5e9242d 100644
--- a/arch/s390/include/asm/syscall_wrapper.h
+++ b/arch/s390/include/asm/syscall_wrapper.h
@@ -38,22 +38,22 @@
* named __s390x_sys_*()
*/
#define COMPAT_SYSCALL_DEFINE0(sname) \
- long __s390_compat_sys_##sname(void); \
+ long __s390_compat_sys_##sname(struct pt_regs *__unused); \
ALLOW_ERROR_INJECTION(__s390_compat_sys_##sname, ERRNO); \
- long __s390_compat_sys_##sname(void)
+ long __s390_compat_sys_##sname(struct pt_regs *__unused)

#define SYSCALL_DEFINE0(sname) \
SYSCALL_METADATA(_##sname, 0); \
- long __s390_sys_##sname(void); \
+ long __s390_sys_##sname(struct pt_regs *__unused); \
ALLOW_ERROR_INJECTION(__s390_sys_##sname, ERRNO); \
- long __s390x_sys_##sname(void); \
+ long __s390x_sys_##sname(struct pt_regs *__unused); \
ALLOW_ERROR_INJECTION(__s390x_sys_##sname, ERRNO); \
static inline long __do_sys_##sname(void); \
- long __s390_sys_##sname(void) \
+ long __s390_sys_##sname(struct pt_regs *__unused) \
{ \
return __do_sys_##sname(); \
} \
- long __s390x_sys_##sname(void) \
+ long __s390x_sys_##sname(struct pt_regs *__unused) \
{ \
return __do_sys_##sname(); \
} \
@@ -104,10 +104,10 @@

#define SYSCALL_DEFINE0(sname) \
SYSCALL_METADATA(_##sname, 0); \
- long __s390x_sys_##sname(void); \
+ long __s390x_sys_##sname(struct pt_regs *__unused); \
ALLOW_ERROR_INJECTION(__s390x_sys_##sname, ERRNO); \
static inline long __do_sys_##sname(void); \
- long __s390x_sys_##sname(void) \
+ long __s390x_sys_##sname(struct pt_regs *__unused) \
{ \
return __do_sys_##sname(); \
} \
--
2.48.1