make m32r handle multiple pending signals

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

arch/m32r/kernel/entry.S

@@ -235,9 +235,9 @@ work_resched:
 work_notifysig:				; deal with pending signals and
 					; notify-resume requests
 	mv	r0, sp			; arg1 : struct pt_regs *regs
-	ldi	r1, r9			; arg2 : __u32 thread_info_flags
+	mv	r1, r9			; arg2 : __u32 thread_info_flags
 	bl	do_notify_resume
-	bra	restore_all
+	bra	resume_userspace
 
 	; perform syscall exit tracing
 	ALIGN

arch/m32r/kernel/signal.c

@@ -282,6 +282,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
 					regs->bpc -= 2;
 				else
 					regs->bpc -= 4;
+				regs->syscall_nr = -1;
 		}
 	}
 
@@ -353,8 +354,8 @@ static int do_signal(struct pt_regs *regs)
 				regs->bpc -= 2;
 			else
 				regs->bpc -= 4;
-		}
-		if (regs->r0 == -ERESTART_RESTARTBLOCK){
+			regs->syscall_nr = -1;
+		} else if (regs->r0 == -ERESTART_RESTARTBLOCK){
 			regs->r0 = regs->orig_r0;
 			regs->r7 = __NR_restart_syscall;
 			inst = *(unsigned short *)(regs->bpc - 2);
@@ -362,6 +363,7 @@ static int do_signal(struct pt_regs *regs)
 				regs->bpc -= 2;
 			else
 				regs->bpc -= 4;
+			regs->syscall_nr = -1;
 		}
 	}
 	if (test_thread_flag(TIF_RESTORE_SIGMASK)) {