csky: Add SECCOMP_FILTER supported

[sfrench/cifs-2.6.git] / arch / csky / kernel / entry.S

diff --git a/arch/csky/kernel/entry.S b/arch/csky/kernel/entry.S
index f13800383a19aab64d09750dc5ec01cc1bea02d4..efd2e696e3cdc28f83be76355afe0c2a0b2062ae 100644 (file)
--- a/arch/csky/kernel/entry.S
+++ b/arch/csky/kernel/entry.S
@@ -168,6 +168,8 @@ ENTRY(csky_systemcall)
 csky_syscall_trace:
        mov     a0, sp                  /* sp = pt_regs pointer */
        jbsr    syscall_trace_enter
+       cmpnei  a0, 0
+       bt      1f
        /* Prepare args before do system call */
        ldw     a0, (sp, LSAVE_A0)
        ldw     a1, (sp, LSAVE_A1)
@@ -188,6 +190,7 @@ csky_syscall_trace:
 #endif
        stw     a0, (sp, LSAVE_A0)      /* Save return value */
 
+1:
 #ifdef CONFIG_DEBUG_RSEQ
        mov     a0, sp
        jbsr    rseq_syscall