5 files changed, 22 insertions, 14 deletions

diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 71b8c947e5e..00506c3d5d6 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -297,6 +297,13 @@ unsigned int do_IRQ(int irq, struct uml_pt_regs *regs)
 	return 1;
 }
 
+void um_free_irq(unsigned int irq, void *dev)
+{
+	free_irq_by_irq_and_dev(irq, dev);
+	free_irq(irq, dev);
+}
+EXPORT_SYMBOL(um_free_irq);
+
 int um_request_irq(unsigned int irq, int fd, int type,
 		   irq_handler_t handler,
 		   unsigned long irqflags, const char * devname,
@@ -327,7 +334,6 @@ static void dummy(struct irq_data *d)
 /* This is used for everything else than the timer. */
 static struct irq_chip normal_irq_type = {
 	.name = "SIGIO",
-	.release = free_irq_by_irq_and_dev,
 	.irq_disable = dummy,
 	.irq_enable = dummy,
 	.irq_ack = dummy,
@@ -335,7 +341,6 @@ static struct irq_chip normal_irq_type = {
 
 static struct irq_chip SIGVTALRM_irq_type = {
 	.name = "SIGVTALRM",
-	.release = free_irq_by_irq_and_dev,
 	.irq_disable = dummy,
 	.irq_enable = dummy,
 	.irq_ack = dummy,
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 2b73dedb44c..3a2235e0abc 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -18,6 +18,7 @@
 #include <linux/seq_file.h>
 #include <linux/tick.h>
 #include <linux/threads.h>
+#include <linux/tracehook.h>
 #include <asm/current.h>
 #include <asm/pgtable.h>
 #include <asm/mmu_context.h>
@@ -114,8 +115,13 @@ void interrupt_end(void)
 {
 	if (need_resched())
 		schedule();
-	if (test_tsk_thread_flag(current, TIF_SIGPENDING))
+	if (test_thread_flag(TIF_SIGPENDING))
 		do_signal();
+	if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME)) {
+		tracehook_notify_resume(&current->thread.regs);
+		if (current->replacement_session_keyring)
+			key_replace_session_keyring();
+	}
 }
 
 void exit_thread(void)
@@ -190,7 +196,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
 	if (current->thread.forking) {
 	  	memcpy(&p->thread.regs.regs, &regs->regs,
 		       sizeof(p->thread.regs.regs));
-		REGS_SET_SYSCALL_RETURN(p->thread.regs.regs.gp, 0);
+		UPT_SET_SYSCALL_RETURN(&p->thread.regs.regs, 0);
 		if (sp != 0)
 			REGS_SP(p->thread.regs.regs.gp) = sp;
 
diff --git a/arch/um/kernel/signal.c b/arch/um/kernel/signal.c
index fb12f4c5e64..187118fbe1b 100644
--- a/arch/um/kernel/signal.c
+++ b/arch/um/kernel/signal.c
@@ -29,9 +29,6 @@ static int handle_signal(struct pt_regs *regs, unsigned long signr,
 	unsigned long sp;
 	int err;
 
-	/* Always make any pending restarted system calls return -EINTR */
-	current_thread_info()->restart_block.fn = do_no_restart_syscall;
-
 	/* Did we come from a system call? */
 	if (PT_REGS_SYSCALL_NR(regs) >= 0) {
 		/* If so, check system call restarting.. */
@@ -77,15 +74,14 @@ static int kern_do_signal(struct pt_regs *regs)
 {
 	struct k_sigaction ka_copy;
 	siginfo_t info;
-	sigset_t *oldset;
 	int sig, handled_sig = 0;
 
-	if (test_thread_flag(TIF_RESTORE_SIGMASK))
-		oldset = &current->saved_sigmask;
-	else
-		oldset = &current->blocked;
-
 	while ((sig = get_signal_to_deliver(&info, &ka_copy, regs, NULL)) > 0) {
+		sigset_t *oldset;
+		if (test_thread_flag(TIF_RESTORE_SIGMASK))
+			oldset = &current->saved_sigmask;
+		else
+			oldset = &current->blocked;
 		handled_sig = 1;
 		/* Whee!  Actually deliver the signal.  */
 		if (!handle_signal(regs, sig, &ka_copy, &info, oldset)) {
diff --git a/arch/um/kernel/skas/syscall.c b/arch/um/kernel/skas/syscall.c
index f5173e1ec3a..05fbeb480e0 100644
--- a/arch/um/kernel/skas/syscall.c
+++ b/arch/um/kernel/skas/syscall.c
@@ -34,7 +34,7 @@ void handle_syscall(struct uml_pt_regs *r)
 		result = -ENOSYS;
 	else result = EXECUTE_SYSCALL(syscall, regs);
 
-	REGS_SET_SYSCALL_RETURN(r->gp, result);
+	UPT_SET_SYSCALL_RETURN(r, result);
 
 	syscall_trace(r, 1);
 }
diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c
index 7f3d4d86431..f819af951c1 100644
--- a/arch/um/kernel/tlb.c
+++ b/arch/um/kernel/tlb.c
@@ -75,6 +75,7 @@ static int do_ops(struct host_vm_change *hvc, int end,
 		default:
 			printk(KERN_ERR "Unknown op type %d in do_ops\n",
 			       op->type);
+			BUG();
 			break;
 		}
 	}