[ARM] Fix sys_sendto and sys_recvfrom 6-arg syscalls

Rather than providing more wrappers for 6-arg syscalls, arrange for
them to be supported as standard.  This just means that we always
store the 6th argument on the stack, rather than in the wrappers.

This means we eliminate the wrappers for:
* sys_futex
* sys_arm_fadvise64_64
* sys_mbind
* sys_ipc

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 2 insertions, 18 deletions

diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index f7f183075237..e2b42997ad33 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -145,7 +145,7 @@ ENTRY(vector_swi)
 #endif
         enable_irq
 
-        str     r4, [sp, #-S_OFF]!              @ push fifth arg
+        stmdb   sp!, {r4, r5}                   @ push fifth and sixth args
 
         get_thread_info tsk
         ldr     ip, [tsk, #TI_FLAGS]            @ check for syscall tracing
@@ -204,7 +204,7 @@ ENTRY(sys_call_table)
  * Special system call wrappers
  */
 @ r0 = syscall number
-@ r5 = syscall table
+@ r8 = syscall table
                 .type   sys_syscall, #function
 sys_syscall:
                 eor     scno, r0, #__NR_SYSCALL_BASE
@@ -255,22 +255,6 @@ sys_sigaltstack_wrapper:
                 ldr     r2, [sp, #S_OFF + S_SP]
                 b       do_sigaltstack
 
-sys_futex_wrapper:
-                str     r5, [sp, #4]            @ push sixth arg
-                b       sys_futex
-
-sys_arm_fadvise64_64_wrapper:
-                str     r5, [sp, #4]            @ push r5 to stack
-                b       sys_arm_fadvise64_64
-
-sys_mbind_wrapper:
-                str     r5, [sp, #4]
-                b       sys_mbind
-
-sys_ipc_wrapper:
-                str     r5, [sp, #4]            @ push sixth arg
-                b       sys_ipc
-
 /*
  * Note: off_4k (r5) is always units of 4K.  If we can't do the requested
  * offset, we return EINVAL.