tile: compat rt_sigreturn gets too enthusiastic about sigaltstack errors

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/tile/kernel/compat_signal.c b/arch/tile/kernel/compat_signal.c
index 210a9bbae96..2e4cc69224a 100644
--- a/arch/tile/kernel/compat_signal.c
+++ b/arch/tile/kernel/compat_signal.c
@@ -248,7 +248,7 @@ long compat_sys_rt_sigreturn(void)
         if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
                 goto badframe;
 
-        if (compat_sys_sigaltstack(&frame->uc.uc_stack, NULL) != 0)
+        if (compat_sys_sigaltstack(&frame->uc.uc_stack, NULL) == -EFAULT)
                 goto badframe;
 
         return 0;