hexagon: Use sigsp()

Use sigsp() instead of the open coded variant.

Signed-off-by: Richard Weinberger <richard@nod.at>

diff --git a/arch/hexagon/kernel/signal.c b/arch/hexagon/kernel/signal.c
index 6525358..eadd70e 100644 (file)
--- a/arch/hexagon/kernel/signal.c
+++ b/arch/hexagon/kernel/signal.c
@@ -36,18 +36,10 @@ struct rt_sigframe {
        struct ucontext uc;
 };
 
-static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
+static void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
                          size_t frame_size)
 {
-       unsigned long sp = regs->r29;
-
-       /* check if we would overflow the alt stack */
-       if (on_sig_stack(sp) && !likely(on_sig_stack(sp - frame_size)))
-               return (void __user __force *)-1UL;
-
-       /* Switch to signal stack if appropriate */
-       if ((ka->sa.sa_flags & SA_ONSTACK) && (sas_ss_flags(sp) == 0))
-               sp = current->sas_ss_sp + current->sas_ss_size;
+       unsigned long sp = sigsp(regs->r29, ksig);
 
        return (void __user *)((sp - frame_size) & ~(sizeof(long long) - 1));
 }
@@ -119,7 +111,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
        struct rt_sigframe __user *frame;
        struct hexagon_vdso *vdso = current->mm->context.vdso;
 
-       frame = get_sigframe(&ksig->ka, regs, sizeof(struct rt_sigframe));
+       frame = get_sigframe(ksig, regs, sizeof(struct rt_sigframe));
 
        if (!access_ok(VERIFY_WRITE, frame, sizeof(struct rt_sigframe)))
                return -EFAULT;