[SPARC64]: Use trap type stored in pt_regs to handle syscall restart.

Now that we can check the trap type directly, we don't need the
funny restart_syscall indication from the trap return paths.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 13 insertions, 9 deletions

diff --git a/arch/sparc64/kernel/signal.c b/arch/sparc64/kernel/signal.c
index 1c47009eb5ec..b959597201ed 100644
--- a/arch/sparc64/kernel/signal.c
+++ b/arch/sparc64/kernel/signal.c
@@ -510,15 +510,20 @@ static inline void syscall_restart(unsigned long orig_i0, struct pt_regs *regs,
  * want to handle. Thus you cannot kill init even with a SIGKILL even by
  * mistake.
  */
-static void do_signal(struct pt_regs *regs, unsigned long orig_i0, int restart_syscall)
+static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
 {
-        siginfo_t info;
         struct signal_deliver_cookie cookie;
         struct k_sigaction ka;
-        int signr;
         sigset_t *oldset;
+        siginfo_t info;
+        int signr, tt;
         
-        cookie.restart_syscall = restart_syscall;
+        tt = regs->magic & 0x1ff;
+        if (tt == 0x110 || tt == 0x111 || tt == 0x16d) {
+                regs->magic &= ~0x1ff;
+                cookie.restart_syscall = 1;
+        } else
+                cookie.restart_syscall = 0;
         cookie.orig_i0 = orig_i0;
 
         if (test_thread_flag(TIF_RESTORE_SIGMASK))
@@ -529,9 +534,8 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0, int restart_s
 #ifdef CONFIG_SPARC32_COMPAT
         if (test_thread_flag(TIF_32BIT)) {
                 extern void do_signal32(sigset_t *, struct pt_regs *,
-                                        unsigned long, int);
-                do_signal32(oldset, regs, orig_i0,
-                            cookie.restart_syscall);
+                                        struct signal_deliver_cookie *);
+                do_signal32(oldset, regs, &cookie);
                 return;
         }
 #endif  
@@ -539,7 +543,7 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0, int restart_s
         signr = get_signal_to_deliver(&info, &ka, regs, &cookie);
         if (signr > 0) {
                 if (cookie.restart_syscall)
-                        syscall_restart(orig_i0, regs, &ka.sa);
+                        syscall_restart(cookie.orig_i0, regs, &ka.sa);
                 handle_signal(signr, &ka, &info, oldset, regs);
 
                 /* a signal was successfully delivered; the saved
@@ -580,7 +584,7 @@ void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, int restart_s
                       unsigned long thread_info_flags)
 {
         if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
-                do_signal(regs, orig_i0, restart_syscall);
+                do_signal(regs, orig_i0);
 }
 
 void ptrace_signal_deliver(struct pt_regs *regs, void *cookie)