diff --git a/sysdeps/unix/sysv/linux/m68k/semtimedop.S b/sysdeps/unix/sysv/linux/m68k/semtimedop.S
deleted file mode 100644
index b291070..0000000
--- a/sysdeps/unix/sysv/linux/m68k/semtimedop.S
+++ /dev/null
@@ -1,69 +0,0 @@
-/* Copyright (C) 2003-2016 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@suse.de>, 2003.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <sysdep.h>
-
-#define SYSOP_semtimedop 4
-
-#define SVRSP	8		/* saved register space */
-#define PARMS	4+SVRSP		/* space for 3 saved regs */
-#define SEMID	PARMS
-#define SOPS	SEMID+4
-#define NSOPS	SOPS+4
-#define TIMEOUT	NSOPS+4
-
-	.text
-ENTRY (semtimedop)
-
-	/* Save registers.  */
-	move.l	%d2, %a1
-	move.l	%d3, -(%sp)
-	cfi_adjust_cfa_offset (4)
-	move.l	%d5, -(%sp)
-	cfi_adjust_cfa_offset (4)
-	cfi_register (%d2, %a1)
-	cfi_rel_offset (%d3, 0)
-	cfi_rel_offset (%d5, 4)
-
-	move.l	#SYSOP_semtimedop, %d1
-	move.l	SEMID(%sp), %d2
-	move.l	NSOPS(%sp), %d3
-	move.l	SOPS(%sp), %d5
-	move.l	TIMEOUT(%sp), %a0
-	move.l	#SYS_ify (ipc), %d0
-
-	trap	#0
-
-	/* Restore registers.  */
-	move.l	(%sp)+, %d5
-	cfi_adjust_cfa_offset (-4)
-	cfi_restore (%d5)
-	move.l	(%sp)+, %d3
-	cfi_adjust_cfa_offset (-4)
-	cfi_restore (%d3)
-	move.l	%a1, %d2
-	cfi_restore (%d2)
-
-	/* Check for error.  */
-	tst.l	%d0
-	jmi	SYSCALL_ERROR_LABEL
-
-	/* Successful; return the syscall's value.  */
-	ret
-
-PSEUDO_END (semtimedop)
diff --git a/sysdeps/unix/sysv/linux/s390/semtimedop.c b/sysdeps/unix/sysv/linux/s390/semtimedop.c
index f226953..db43f00 100644
--- a/sysdeps/unix/sysv/linux/s390/semtimedop.c
+++ b/sysdeps/unix/sysv/linux/s390/semtimedop.c
@@ -16,12 +16,10 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#include <errno.h>
 #include <sys/sem.h>
 #include <ipc_priv.h>
-
 #include <sysdep.h>
-#include <sys/syscall.h>
+#include <errno.h>
 
 /* Perform user-defined atomical operation of array of semaphores.  */
 
@@ -29,6 +27,10 @@ int
 semtimedop (int semid, struct sembuf *sops, size_t nsops,
 	    const struct timespec *timeout)
 {
-  return INLINE_SYSCALL (ipc, 5, IPCOP_semtimedop,
-			 semid, (int) nsops, timeout, sops);
+  /* The s390 sys_ipc variant has only five parameters instead of six
+     (as for default variant) and the only difference is the handling of
+     SEMTIMEDOP where on s390 the third parameter is used as a pointer
+     to a struct timespec where the generic variant uses fifth parameter.  */
+  return INLINE_SYSCALL_CALL (ipc, IPCOP_semtimedop, semid, nsops, timeout,
+			      sops);
 }
diff --git a/sysdeps/unix/sysv/linux/semtimedop.c b/sysdeps/unix/sysv/linux/semtimedop.c
index 30ee7fe..d9249d2 100644
--- a/sysdeps/unix/sysv/linux/semtimedop.c
+++ b/sysdeps/unix/sysv/linux/semtimedop.c
@@ -16,12 +16,10 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#include <errno.h>
 #include <sys/sem.h>
 #include <ipc_priv.h>
-
 #include <sysdep.h>
-#include <sys/syscall.h>
+#include <errno.h>
 
 /* Perform user-defined atomical operation of array of semaphores.  */
 
@@ -29,7 +27,10 @@ int
 semtimedop (int semid, struct sembuf *sops, size_t nsops,
 	    const struct timespec *timeout)
 {
-  return INLINE_SYSCALL (ipc, 6, IPCOP_semtimedop,
-			 semid, (int) nsops, 0, sops,
-			 timeout);
+#ifdef __ASSUME_SYSVIPC_SYSCALL
+  return INLINE_SYSCALL_CALL (semtimedop, semid, nsops, sops, timeout);
+#else
+  return INLINE_SYSCALL_CALL (ipc, IPCOP_semtimedop, semid, nsops, 0, sops,
+			      timeout);
+#endif
 }
