MIPS: scall: Always run the seccomp syscall filters

[linux-drm-fsl-dcu.git] / arch / mips / kernel / scall64-n32.S

diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index 3868cf4c83df2929980f843206c8781383e6a2bd..c794843975845df2e0a9d9c0c0fd14dad1ed17ec 100644 (file)
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -52,6 +52,7 @@ NESTED(handle_sysn32, PT_SIZE, sp)
        and     t0, t1, t0
        bnez    t0, n32_syscall_trace_entry
 
+syscall_common:
        jalr    t2                      # Do The Real Thing (TM)
 
        li      t0, -EMAXERRNO - 1      # error?
@@ -75,9 +76,9 @@ n32_syscall_trace_entry:
        move    a1, v0
        jal     syscall_trace_enter
 
-       bltz    v0, 2f                  # seccomp failed? Skip syscall
+       bltz    v0, 1f                  # seccomp failed? Skip syscall
 
-       move    t0, s0
+       move    t2, s0
        RESTORE_STATIC
        ld      a0, PT_R4(sp)           # Restore argument registers
        ld      a1, PT_R5(sp)
@@ -85,19 +86,9 @@ n32_syscall_trace_entry:
        ld      a3, PT_R7(sp)
        ld      a4, PT_R8(sp)
        ld      a5, PT_R9(sp)
-       jalr    t0
+       j       syscall_common
 
-       li      t0, -EMAXERRNO - 1      # error?
-       sltu    t0, t0, v0
-       sd      t0, PT_R7(sp)           # set error flag
-       beqz    t0, 1f
-
-       ld      t1, PT_R2(sp)           # syscall number
-       dnegu   v0                      # error
-       sd      t1, PT_R0(sp)           # save it for syscall restarting
-1:     sd      v0, PT_R2(sp)           # result
-
-2:     j       syscall_exit
+1:     j       syscall_exit
 
 not_n32_scall:
        /* This is not an n32 compatibility syscall, pass it on to