microblaze: drop 'oldset' argument of do_notify_resume()

never used...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

arch/microblaze/kernel/entry-nommu.S

@@ -135,7 +135,6 @@ ret_from_intr:
 1:	andi	r11, r19, _TIF_SIGPENDING | _TIF_NOTIFY_RESUME
 	beqid	r11, no_intr_resched
 	addk	r5, r1, r0
-	addk	r7, r0, r0
 	bralid	r15, do_notify_resume
 	addk	r6, r0, r0
 
@@ -485,9 +484,8 @@ work_pending:
 1:	andi	r11, r19, _TIF_SIGPENDING | _TIF_NOTIFY_RESUME
 	beqi	r11, no_work_pending
 	addk	r5, r1, r0
-	addik	r7, r0, 1
 	bralid	r15, do_notify_resume
-	addk	r6, r0, r0
+	addik	r6, r0, 1
 	bri	no_work_pending
 
 ENTRY(ret_to_user)

arch/microblaze/kernel/entry.S

@@ -434,9 +434,8 @@ C_ENTRY(ret_from_trap):
 	beqi	r11, 1f;		/* Signals to handle, handle them */
 
 	addik	r5, r1, 0;		/* Arg 1: struct pt_regs *regs */
-	addi	r7, r0, 1;		/* Arg 3: int in_syscall */
 	bralid	r15, do_notify_resume;	/* Handle any signals */
-	add	r6, r0, r0;		/* Arg 2: sigset_t *oldset */
+	addi	r6, r0, 1;		/* Arg 2: int in_syscall */
 
 /* Finally, return to user state.  */
 1:	set_bip;			/*  Ints masked for state restore */
@@ -637,9 +636,8 @@ C_ENTRY(ret_from_exc):
 	 * the normal entry sequence, so that it may be safely restored
 	 * (in a possibly modified form) after do_notify_resume returns. */
 	addik	r5, r1, 0;		/* Arg 1: struct pt_regs *regs */
-	addi	r7, r0, 0;		/* Arg 3: int in_syscall */
 	bralid	r15, do_notify_resume;	/* Handle any signals */
-	add	r6, r0, r0;		/* Arg 2: sigset_t *oldset */
+	addi	r6, r0, 0;		/* Arg 2: int in_syscall */
 
 /* Finally, return to user state.  */
 1:	set_bip;			/* Ints masked for state restore */
@@ -735,10 +733,9 @@ ret_from_irq:
 	andi	r11, r11, _TIF_SIGPENDING | _TIF_NOTIFY_RESUME;
 	beqid	r11, no_intr_resched
 /* Handle a signal return; Pending signals should be in r18. */
-	addi	r7, r0, 0; /* Arg 3: int in_syscall */
 	addik	r5, r1, 0; /* Arg 1: struct pt_regs *regs */
 	bralid	r15, do_notify_resume;	/* Handle any signals */
-	add	r6, r0, r0; /* Arg 2: sigset_t *oldset */
+	addi	r6, r0, 0; /* Arg 2: int in_syscall */
 
 /* Finally, return to user state. */
 no_intr_resched:
@@ -873,9 +870,8 @@ dbtrap_call: /* Return point for kernel/user entry + 8 because of rtsd r15, 8 */
 	beqi	r11, 1f;		/* Signals to handle, handle them */
 
 	addik	r5, r1, 0;		/* Arg 1: struct pt_regs *regs */
-	addi  r7, r0, 0;	/* Arg 3: int in_syscall */
 	bralid	r15, do_notify_resume;	/* Handle any signals */
-	add	r6, r0, r0;		/* Arg 2: sigset_t *oldset */
+	addi  r6, r0, 0;	/* Arg 2: int in_syscall */
 
 /* Finally, return to user state.  */
 1:	swi	CURRENT_TASK, r0, PER_CPU(CURRENT_SAVE); /* save current */

arch/microblaze/kernel/signal.c

@@ -339,13 +339,14 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
  * the kernel can handle, and then we build all the user-level signal handling
  * stack-frames in one go after that.
  */
-static int do_signal(struct pt_regs *regs, sigset_t *oldset, int in_syscall)
+static void do_signal(struct pt_regs *regs, int in_syscall)
 {
 	siginfo_t info;
 	int signr;
 	struct k_sigaction ka;
+	sigset_t *oldset;
 #ifdef DEBUG_SIG
-	printk(KERN_INFO "do signal: %p %p %d\n", regs, oldset, in_syscall);
+	printk(KERN_INFO "do signal: %p %d\n", regs, in_syscall);
 	printk(KERN_INFO "do signal2: %lx %lx %ld [%lx]\n", regs->pc, regs->r1,
 			regs->r12, current_thread_info()->flags);
 #endif
@@ -370,7 +371,7 @@ static int do_signal(struct pt_regs *regs, sigset_t *oldset, int in_syscall)
 			current_thread_info()->status &=
 			    ~TS_RESTORE_SIGMASK;
 		}
-		return 1;
+		return;
 	}
 
 	if (in_syscall)
@@ -384,12 +385,9 @@ static int do_signal(struct pt_regs *regs, sigset_t *oldset, int in_syscall)
 		current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
 		sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
 	}
-
-	/* Did we come from a system call? */
-	return 0;
 }
 
-void do_notify_resume(struct pt_regs *regs, sigset_t *oldset, int in_syscall)
+void do_notify_resume(struct pt_regs *regs, int in_syscall)
 {
 	/*
 	 * We want the common case to go fast, which
@@ -401,7 +399,7 @@ void do_notify_resume(struct pt_regs *regs, sigset_t *oldset, int in_syscall)
 		return;
 
 	if (test_thread_flag(TIF_SIGPENDING))
-		do_signal(regs, oldset, in_syscall);
+		do_signal(regs, in_syscall);
 
 	if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME)) {
 		tracehook_notify_resume(regs);