1 files changed, 2 insertions, 27 deletions

diff --git a/arch/sparc/kernel/signal_32.c b/arch/sparc/kernel/signal_32.c
index 68f9c8650af4..cd1823487759 100644
--- a/arch/sparc/kernel/signal_32.c
+++ b/arch/sparc/kernel/signal_32.c
@@ -59,18 +59,6 @@ struct rt_signal_frame {
 #define SF_ALIGNEDSZ  (((sizeof(struct signal_frame) + 7) & (~7)))
 #define RT_ALIGNEDSZ  (((sizeof(struct rt_signal_frame) + 7) & (~7)))
 
-static int _sigpause_common(old_sigset_t set)
-{
-        sigset_t blocked;
-        siginitset(&blocked, set);
-        return sigsuspend(&blocked);
-}
-
-asmlinkage int sys_sigsuspend(old_sigset_t set)
-{
-        return _sigpause_common(set);
-}
-
 asmlinkage void do_sigreturn(struct pt_regs *regs)
 {
         struct signal_frame __user *sf;
@@ -141,9 +129,7 @@ asmlinkage void do_rt_sigreturn(struct pt_regs *regs)
         unsigned int psr, pc, npc;
         __siginfo_fpu_t __user *fpu_save;
         __siginfo_rwin_t __user *rwin_save;
-        mm_segment_t old_fs;
         sigset_t set;
-        stack_t st;
         int err;
 
         synchronize_user_stack();
@@ -171,8 +157,7 @@ asmlinkage void do_rt_sigreturn(struct pt_regs *regs)
         if (!err && fpu_save)
                 err |= restore_fpu_state(regs, fpu_save);
         err |= __copy_from_user(&set, &sf->mask, sizeof(sigset_t));
-        
-        err |= __copy_from_user(&st, &sf->stack, sizeof(stack_t));
+        err |= restore_altstack(&sf->stack);
         
         if (err)
                 goto segv;
@@ -180,14 +165,6 @@ asmlinkage void do_rt_sigreturn(struct pt_regs *regs)
         regs->pc = pc;
         regs->npc = npc;
         
-        /* It is more difficult to avoid calling this function than to
-         * call it and ignore errors.
-         */
-        old_fs = get_fs();
-        set_fs(KERNEL_DS);
-        do_sigaltstack((const stack_t __user *) &st, NULL, (unsigned long)sf);
-        set_fs(old_fs);
-
         err |= __get_user(rwin_save, &sf->rwin_save);
         if (!err && rwin_save) {
                 if (restore_rwin_state(rwin_save))
@@ -391,9 +368,7 @@ static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
         err |= __copy_to_user(&sf->mask, &oldset->sig[0], sizeof(sigset_t));
         
         /* Setup sigaltstack */
-        err |= __put_user(current->sas_ss_sp, &sf->stack.ss_sp);
-        err |= __put_user(sas_ss_flags(regs->u_regs[UREG_FP]), &sf->stack.ss_flags);
-        err |= __put_user(current->sas_ss_size, &sf->stack.ss_size);
+        err |= __save_altstack(&sf->stack, regs->u_regs[UREG_FP]);
         
         if (!wsaved) {
                 err |= __copy_to_user(sf, (char *) regs->u_regs[UREG_FP],