diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c
index db70375..7e427b4 100644
--- a/drivers/firewire/fw-ohci.c
+++ b/drivers/firewire/fw-ohci.c
@@ -907,6 +907,8 @@
 	int self_id_count, i, j, reg;
 	int generation, new_generation;
 	unsigned long flags;
+	void *free_rom = NULL;
+	dma_addr_t free_rom_bus = 0;
 
 	reg = reg_read(ohci, OHCI1394_NodeID);
 	if (!(reg & OHCI1394_NodeID_idValid)) {
@@ -970,8 +972,8 @@
 	 */
 
 	if (ohci->next_config_rom != NULL) {
-		dma_free_coherent(ohci->card.device, CONFIG_ROM_SIZE,
-				  ohci->config_rom, ohci->config_rom_bus);
+		free_rom     = ohci->config_rom;
+		free_rom_bus = ohci->config_rom_bus;
 		ohci->config_rom      = ohci->next_config_rom;
 		ohci->config_rom_bus  = ohci->next_config_rom_bus;
 		ohci->next_config_rom = NULL;
@@ -990,6 +992,10 @@
 
 	spin_unlock_irqrestore(&ohci->lock, flags);
 
+	if (free_rom)
+		dma_free_coherent(ohci->card.device, CONFIG_ROM_SIZE,
+				  free_rom, free_rom_bus);
+
 	fw_core_handle_bus_reset(&ohci->card, ohci->node_id, generation,
 				 self_id_count, ohci->self_id_buffer);
 }
@@ -1186,7 +1192,7 @@
 {
 	struct fw_ohci *ohci;
 	unsigned long flags;
-	int retval = 0;
+	int retval = -EBUSY;
 	__be32 *next_config_rom;
 	dma_addr_t next_config_rom_bus;
 
@@ -1240,10 +1246,7 @@
 
 		reg_write(ohci, OHCI1394_ConfigROMmap,
 			  ohci->next_config_rom_bus);
-	} else {
-		dma_free_coherent(ohci->card.device, CONFIG_ROM_SIZE,
-				  next_config_rom, next_config_rom_bus);
-		retval = -EBUSY;
+		retval = 0;
 	}
 
 	spin_unlock_irqrestore(&ohci->lock, flags);
@@ -1257,6 +1260,9 @@
 	 */
 	if (retval == 0)
 		fw_core_initiate_bus_reset(&ohci->card, 1);
+	else
+		dma_free_coherent(ohci->card.device, CONFIG_ROM_SIZE,
+				  next_config_rom, next_config_rom_bus);
 
 	return retval;
 }
diff --git a/drivers/firewire/fw-sbp2.c b/drivers/firewire/fw-sbp2.c
index 3e4a369..ba816ef 100644
--- a/drivers/firewire/fw-sbp2.c
+++ b/drivers/firewire/fw-sbp2.c
@@ -984,6 +984,7 @@
 	struct fw_unit *unit = sd->unit;
 	struct fw_device *device = fw_device(unit->device.parent);
 	struct sbp2_command_orb *orb;
+	unsigned max_payload;
 
 	/*
 	 * Bidirectional commands are not yet implemented, and unknown
@@ -1017,8 +1018,10 @@
 	 * specifies the max payload size as 2 ^ (max_payload + 2), so
 	 * if we set this to max_speed + 7, we get the right value.
 	 */
+	max_payload = min(device->max_speed + 7,
+			  device->card->max_receive - 1);
 	orb->request.misc =
-		COMMAND_ORB_MAX_PAYLOAD(device->max_speed + 7) |
+		COMMAND_ORB_MAX_PAYLOAD(max_payload) |
 		COMMAND_ORB_SPEED(device->max_speed) |
 		COMMAND_ORB_NOTIFY;
 
diff --git a/drivers/firewire/fw-transaction.c b/drivers/firewire/fw-transaction.c
index 3ce8e2f..3e1cb12 100644
--- a/drivers/firewire/fw-transaction.c
+++ b/drivers/firewire/fw-transaction.c
@@ -734,7 +734,7 @@
 }
 EXPORT_SYMBOL(fw_core_handle_response);
 
-const struct fw_address_region topology_map_region =
+static const struct fw_address_region topology_map_region =
 	{ .start = 0xfffff0001000ull, .end = 0xfffff0001400ull, };
 
 static void
@@ -772,7 +772,7 @@
 	.address_callback	= handle_topology_map,
 };
 
-const struct fw_address_region registers_region =
+static const struct fw_address_region registers_region =
 	{ .start = 0xfffff0000000ull, .end = 0xfffff0000400ull, };
 
 static void
diff --git a/drivers/firewire/fw-transaction.h b/drivers/firewire/fw-transaction.h
index 5ceaccd..fa7967b 100644
--- a/drivers/firewire/fw-transaction.h
+++ b/drivers/firewire/fw-transaction.h
@@ -231,7 +231,7 @@
 	unsigned long reset_jiffies;
 
 	unsigned long long guid;
-	int max_receive;
+	unsigned max_receive;
 	int link_speed;
 	int config_rom_generation;
 
diff --git a/drivers/ieee1394/Kconfig b/drivers/ieee1394/Kconfig
index 8012b3b..545663e 100644
--- a/drivers/ieee1394/Kconfig
+++ b/drivers/ieee1394/Kconfig
@@ -97,7 +97,7 @@
 
 config IEEE1394_SBP2_PHYS_DMA
 	bool "Enable replacement for physical DMA in SBP2"
-	depends on IEEE1394 && IEEE1394_SBP2 && EXPERIMENTAL && (X86_32 || PPC_32)
+	depends on IEEE1394_SBP2 && VIRT_TO_BUS && EXPERIMENTAL
 	help
 	  This builds sbp2 for use with non-OHCI host adapters which do not
 	  support physical DMA or for when ohci1394 is run with phys_dma=0.
diff --git a/drivers/ieee1394/sbp2.c b/drivers/ieee1394/sbp2.c
index e882cb9..47dbe8f 100644
--- a/drivers/ieee1394/sbp2.c
+++ b/drivers/ieee1394/sbp2.c
@@ -773,11 +773,6 @@
 			SBP2_ERR("failed to register lower 4GB address range");
 			goto failed_alloc;
 		}
-#else
-		if (dma_set_mask(hi->host->device.parent, DMA_32BIT_MASK)) {
-			SBP2_ERR("failed to set 4GB DMA mask");
-			goto failed_alloc;
-		}
 #endif
 	}