Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: Handle -ERESTART_RESTARTBLOCK for restartable syscalls.
  sh: oops_enter()/oops_exit() in die().
  sh: Fix restartable syscall arg5 clobbering.

arch/sh/kernel/signal.c

@@ -268,7 +268,7 @@ asmlinkage int sys_rt_sigreturn(unsigned long r4, unsigned long r5,
 badframe:
 	force_sig(SIGSEGV, current);
 	return 0;
-}	
+}
 
 /*
  * Set up a signal frame.
@@ -481,7 +481,7 @@ give_sigsegv:
 
 static int
 handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
-	      sigset_t *oldset, struct pt_regs *regs)
+	      sigset_t *oldset, struct pt_regs *regs, unsigned int save_r0)
 {
 	int ret;
 
@@ -489,6 +489,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
 	if (regs->tra >= 0) {
 		/* If so, check system call restarting.. */
 		switch (regs->regs[0]) {
+			case -ERESTART_RESTARTBLOCK:
 			case -ERESTARTNOHAND:
 				regs->regs[0] = -EINTR;
 				break;
@@ -500,6 +501,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
 				}
 			/* fallthrough */
 			case -ERESTARTNOINTR:
+				regs->regs[0] = save_r0;
 				regs->pc -= instruction_size(
 						ctrl_inw(regs->pc - 4));
 				break;
@@ -583,7 +585,8 @@ static void do_signal(struct pt_regs *regs, unsigned int save_r0)
 	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
 	if (signr > 0) {
 		/* Whee!  Actually deliver the signal.  */
-		if (handle_signal(signr, &ka, &info, oldset, regs) == 0) {
+		if (handle_signal(signr, &ka, &info, oldset,
+				  regs, save_r0) == 0) {
 			/* a signal was successfully delivered; the saved
 			 * sigmask will have been stored in the signal frame,
 			 * and will be restored by sigreturn, so we can simply

arch/sh/kernel/traps.c

@@ -83,6 +83,8 @@ void die(const char * str, struct pt_regs * regs, long err)
 {
 	static int die_counter;
 
+	oops_enter();
+
 	console_verbose();
 	spin_lock_irq(&die_lock);
 	bust_spinlocks(1);
@@ -112,6 +114,7 @@ void die(const char * str, struct pt_regs * regs, long err)
 	if (panic_on_oops)
 		panic("Fatal exception");
 
+	oops_exit();
 	do_exit(SIGSEGV);
 }