blackfin: Use sigsp()

Use sigsp() instead of the open coded variant.

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Steven Miao <realmz6@gmail.com>

1 files changed, 3 insertions, 11 deletions

diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c
index 1389cd3b74e3..ef275571d885 100644
--- a/arch/blackfin/kernel/signal.c
+++ b/arch/blackfin/kernel/signal.c
@@ -135,19 +135,11 @@ static inline int rt_setup_sigcontext(struct sigcontext *sc, struct pt_regs *reg
         return err;
 }
 
-static inline void *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
+static inline void *get_sigframe(struct ksignal *ksig,
                                  size_t frame_size)
 {
-        unsigned long usp;
+        unsigned long usp = sigsp(rdusp(), ksig);
 
-        /* Default to using normal stack.  */
-        usp = rdusp();
-
-        /* This is the X/Open sanctioned signal stack switching.  */
-        if (ka->sa.sa_flags & SA_ONSTACK) {
-                if (!on_sig_stack(usp))
-                        usp = current->sas_ss_sp + current->sas_ss_size;
-        }
         return (void *)((usp - frame_size) & -8UL);
 }
 
@@ -157,7 +149,7 @@ setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
         struct rt_sigframe *frame;
         int err = 0;
 
-        frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));
+        frame = get_sigframe(ksig, sizeof(*frame));
 
         err |= __put_user((current_thread_info()->exec_domain
                            && current_thread_info()->exec_domain->signal_invmap