diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index c777088f5828..6e291d8f3a27 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -1686,7 +1686,8 @@ static int fw_device_op_mmap(struct file *file, struct vm_area_struct *vma)
 	if (ret < 0)
 		goto fail;
 
-	ret = fw_iso_buffer_map_vma(&client->buffer, vma);
+	ret = vm_map_pages_zero(vma, client->buffer.pages,
+				client->buffer.page_count);
 	if (ret < 0)
 		goto fail;
 
diff --git a/drivers/firewire/core-iso.c b/drivers/firewire/core-iso.c
index df8a56a979b9..185b0b78b3d6 100644
--- a/drivers/firewire/core-iso.c
+++ b/drivers/firewire/core-iso.c
@@ -91,13 +91,6 @@ int fw_iso_buffer_init(struct fw_iso_buffer *buffer, struct fw_card *card,
 }
 EXPORT_SYMBOL(fw_iso_buffer_init);
 
-int fw_iso_buffer_map_vma(struct fw_iso_buffer *buffer,
-			  struct vm_area_struct *vma)
-{
-	return vm_map_pages_zero(vma, buffer->pages,
-					buffer->page_count);
-}
-
 void fw_iso_buffer_destroy(struct fw_iso_buffer *buffer,
 			   struct fw_card *card)
 {
diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h
index 0f0bed3a4bbb..4b0e4ee655a1 100644
--- a/drivers/firewire/core.h
+++ b/drivers/firewire/core.h
@@ -158,8 +158,6 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event);
 int fw_iso_buffer_alloc(struct fw_iso_buffer *buffer, int page_count);
 int fw_iso_buffer_map_dma(struct fw_iso_buffer *buffer, struct fw_card *card,
 			  enum dma_data_direction direction);
-int fw_iso_buffer_map_vma(struct fw_iso_buffer *buffer,
-			  struct vm_area_struct *vma);
 
 
 /* -topology */
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 522f3addb5bd..33269316f111 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -1752,7 +1752,7 @@ static u32 update_bus_time(struct fw_ohci *ohci)
 
 	if (unlikely(!ohci->bus_time_running)) {
 		reg_write(ohci, OHCI1394_IntMaskSet, OHCI1394_cycle64Seconds);
-		ohci->bus_time = (lower_32_bits(get_seconds()) & ~0x7f) |
+		ohci->bus_time = (lower_32_bits(ktime_get_seconds()) & ~0x7f) |
 		                 (cycle_time_seconds & 0x40);
 		ohci->bus_time_running = true;
 	}