Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: (43 commits)
  firewire: cleanups
  firewire: fix synchronization of gap counts
  firewire: wait until PHY configuration packet was transmitted (fix bus reset loop)
  firewire: remove unused struct member
  firewire: use bitwise and to get reg in handle_registers
  firewire: replace more hex values with defined csr constants
  firewire: reread config ROM when device reset the bus
  firewire: replace static ROM cache by allocated cache
  firewire: fw-ohci: work around generation bug in TI controllers (fix AV/C and more)
  firewire: fw-ohci: extend logging of bus generations and node ID
  firewire: fw-ohci: conditionally log busReset interrupts
  firewire: fw-ohci: don't append to AT context when it's not active
  firewire: fw-ohci: log regAccessFail events
  firewire: fw-ohci: make sure HCControl register LPS bit is set
  firewire: fw-ohci: missing PPC PMac feature calls in failure path
  firewire: fw-ohci: untangle a mixed unsigned/signed expression
  firewire: debug interrupt events
  firewire: fw-ohci: catch self_id_count == 0
  firewire: fw-ohci: add self ID error check
  firewire: fw-ohci: refactor probe, remove, suspend, resume
  ...

Documentation/debugging-via-ohci1394.txt

@@ -41,15 +41,19 @@ to a working state and enables physical DMA by default for all remote nodes.
 This can be turned off by ohci1394's module parameter phys_dma=0.
 
 The alternative firewire-ohci driver in drivers/firewire uses filtered physical
-DMA, hence is not yet suitable for remote debugging.
+DMA by default, which is more secure but not suitable for remote debugging.
+Compile the driver with CONFIG_FIREWIRE_OHCI_REMOTE_DMA (Kernel hacking menu:
+Remote debugging over FireWire with firewire-ohci) to get unfiltered physical
+DMA.
 
-Because ohci1394 depends on the PCI enumeration to be completed, an
-initialization routine which runs pretty early (long before console_init()
-which makes the printk buffer appear on the console can be called) was written.
+Because ohci1394 and firewire-ohci depend on the PCI enumeration to be
+completed, an initialization routine which runs pretty early has been
+implemented for x86.  This routine runs long before console_init() can be
+called, i.e. before the printk buffer appears on the console.
 
 To activate it, enable CONFIG_PROVIDE_OHCI1394_DMA_INIT (Kernel hacking menu:
-Provide code for enabling DMA over FireWire early on boot) and pass the
-parameter "ohci1394_dma=early" to the recompiled kernel on boot.
+Remote debugging over FireWire early on boot) and pass the parameter
+"ohci1394_dma=early" to the recompiled kernel on boot.
 
 Tools
 -----

drivers/firewire/Kconfig

@@ -54,6 +54,11 @@ config FIREWIRE_OHCI
 	  directive, use "install modulename /bin/true" for the modules to be
 	  blacklisted.
 
+config FIREWIRE_OHCI_DEBUG
+	bool
+	depends on FIREWIRE_OHCI
+	default y
+
 config FIREWIRE_SBP2
 	tristate "Support for storage devices (SBP-2 protocol driver)"
 	depends on FIREWIRE && SCSI

drivers/firewire/fw-card.c

@@ -167,7 +167,6 @@ fw_core_add_descriptor(struct fw_descriptor *desc)
 
 	return 0;
 }
-EXPORT_SYMBOL(fw_core_add_descriptor);
 
 void
 fw_core_remove_descriptor(struct fw_descriptor *desc)
@@ -182,7 +181,6 @@ fw_core_remove_descriptor(struct fw_descriptor *desc)
 
 	mutex_unlock(&card_mutex);
 }
-EXPORT_SYMBOL(fw_core_remove_descriptor);
 
 static const char gap_count_table[] = {
 	63, 5, 7, 8, 10, 13, 16, 18, 21, 24, 26, 29, 32, 35, 37, 40
@@ -220,7 +218,7 @@ fw_card_bm_work(struct work_struct *work)
 	struct bm_data bmd;
 	unsigned long flags;
 	int root_id, new_root_id, irm_id, gap_count, generation, grace;
-	int do_reset = 0;
+	bool do_reset = false;
 
 	spin_lock_irqsave(&card->lock, flags);
 	local_node = card->local_node;
@@ -331,7 +329,7 @@ fw_card_bm_work(struct work_struct *work)
 		 */
 		spin_unlock_irqrestore(&card->lock, flags);
 		goto out;
-	} else if (root_device->config_rom[2] & BIB_CMC) {
+	} else if (root_device->cmc) {
 		/*
 		 * FIXME: I suppose we should set the cmstr bit in the
 		 * STATE_CLEAR register of this node, as described in
@@ -360,14 +358,14 @@ fw_card_bm_work(struct work_struct *work)
 		gap_count = 63;
 
 	/*
-	 * Finally, figure out if we should do a reset or not.  If we've
-	 * done less that 5 resets with the same physical topology and we
+	 * Finally, figure out if we should do a reset or not.  If we have
+	 * done less than 5 resets with the same physical topology and we
 	 * have either a new root or a new gap count setting, let's do it.
 	 */
 
 	if (card->bm_retries++ < 5 &&
 	    (card->gap_count != gap_count || new_root_id != root_id))
-		do_reset = 1;
+		do_reset = true;
 
 	spin_unlock_irqrestore(&card->lock, flags);
 
@@ -398,7 +396,6 @@ fw_card_initialize(struct fw_card *card, const struct fw_card_driver *driver,
 {
 	static atomic_t index = ATOMIC_INIT(-1);
 
-	kref_init(&card->kref);
 	atomic_set(&card->device_count, 0);
 	card->index = atomic_inc_return(&index);
 	card->driver = driver;
@@ -429,12 +426,6 @@ fw_card_add(struct fw_card *card,
 	card->link_speed = link_speed;
 	card->guid = guid;
 
-	/*
-	 * The subsystem grabs a reference when the card is added and
-	 * drops it when the driver calls fw_core_remove_card.
-	 */
-	fw_card_get(card);
-
 	mutex_lock(&card_mutex);
 	config_rom = generate_config_rom(card, &length);
 	list_add_tail(&card->link, &card_list);
@@ -540,40 +531,9 @@ fw_core_remove_card(struct fw_card *card)
 	cancel_delayed_work_sync(&card->work);
 	fw_flush_transactions(card);
 	del_timer_sync(&card->flush_timer);
-
-	fw_card_put(card);
 }
 EXPORT_SYMBOL(fw_core_remove_card);
 
-struct fw_card *
-fw_card_get(struct fw_card *card)
-{
-	kref_get(&card->kref);
-
-	return card;
-}
-EXPORT_SYMBOL(fw_card_get);
-
-static void
-release_card(struct kref *kref)
-{
-	struct fw_card *card = container_of(kref, struct fw_card, kref);
-
-	kfree(card);
-}
-
-/*
- * An assumption for fw_card_put() is that the card driver allocates
- * the fw_card struct with kalloc and that it has been shut down
- * before the last ref is dropped.
- */
-void
-fw_card_put(struct fw_card *card)
-{
-	kref_put(&card->kref, release_card);
-}
-EXPORT_SYMBOL(fw_card_put);
-
 int
 fw_core_initiate_bus_reset(struct fw_card *card, int short_reset)
 {

drivers/firewire/fw-cdev.c

@@ -269,21 +269,28 @@ static int ioctl_get_info(struct client *client, void *buffer)
 {
 	struct fw_cdev_get_info *get_info = buffer;
 	struct fw_cdev_event_bus_reset bus_reset;
+	unsigned long ret = 0;
 
 	client->version = get_info->version;
 	get_info->version = FW_CDEV_VERSION;
 
+	down_read(&fw_device_rwsem);
+
 	if (get_info->rom != 0) {
 		void __user *uptr = u64_to_uptr(get_info->rom);
 		size_t want = get_info->rom_length;
 		size_t have = client->device->config_rom_length * 4;
 
-		if (copy_to_user(uptr, client->device->config_rom,
-				 min(want, have)))
-			return -EFAULT;
+		ret = copy_to_user(uptr, client->device->config_rom,
+				   min(want, have));
 	}
 	get_info->rom_length = client->device->config_rom_length * 4;
 
+	up_read(&fw_device_rwsem);
+
+	if (ret != 0)
+		return -EFAULT;
+
 	client->bus_reset_closure = get_info->bus_reset_closure;
 	if (get_info->bus_reset != 0) {
 		void __user *uptr = u64_to_uptr(get_info->bus_reset);

drivers/firewire/fw-device.h

@@ -21,6 +21,7 @@
 
 #include <linux/fs.h>
 #include <linux/cdev.h>
+#include <linux/rwsem.h>
 #include <asm/atomic.h>
 
 enum fw_device_state {
@@ -46,6 +47,11 @@ struct fw_attribute_group {
  * fw_device.node_id is guaranteed to be current too.
  *
  * The same applies to fw_device.card->node_id vs. fw_device.generation.
+ *
+ * fw_device.config_rom and fw_device.config_rom_length may be accessed during
+ * the lifetime of any fw_unit belonging to the fw_device, before device_del()
+ * was called on the last fw_unit.  Alternatively, they may be accessed while
+ * holding fw_device_rwsem.
  */
 struct fw_device {
 	atomic_t state;
@@ -53,6 +59,7 @@ struct fw_device {
 	int node_id;
 	int generation;
 	unsigned max_speed;
+	bool cmc;
 	struct fw_card *card;
 	struct device device;
 	struct list_head link;
@@ -64,28 +71,24 @@ struct fw_device {
 	struct fw_attribute_group attribute_group;
 };
 
-static inline struct fw_device *
-fw_device(struct device *dev)
+static inline struct fw_device *fw_device(struct device *dev)
 {
 	return container_of(dev, struct fw_device, device);
 }
 
-static inline int
-fw_device_is_shutdown(struct fw_device *device)
+static inline int fw_device_is_shutdown(struct fw_device *device)
 {
 	return atomic_read(&device->state) == FW_DEVICE_SHUTDOWN;
 }
 
-static inline struct fw_device *
-fw_device_get(struct fw_device *device)
+static inline struct fw_device *fw_device_get(struct fw_device *device)
 {
 	get_device(&device->device);
 
 	return device;
 }
 
-static inline void
-fw_device_put(struct fw_device *device)
+static inline void fw_device_put(struct fw_device *device)
 {
 	put_device(&device->device);
 }
@@ -96,20 +99,35 @@ int fw_device_enable_phys_dma(struct fw_device *device);
 void fw_device_cdev_update(struct fw_device *device);
 void fw_device_cdev_remove(struct fw_device *device);
 
+extern struct rw_semaphore fw_device_rwsem;
 extern int fw_cdev_major;
 
+/*
+ * fw_unit.directory must not be accessed after device_del(&fw_unit.device).
+ */
 struct fw_unit {
 	struct device device;
 	u32 *directory;
 	struct fw_attribute_group attribute_group;
 };
 
-static inline struct fw_unit *
-fw_unit(struct device *dev)
+static inline struct fw_unit *fw_unit(struct device *dev)
 {
 	return container_of(dev, struct fw_unit, device);
 }
 
+static inline struct fw_unit *fw_unit_get(struct fw_unit *unit)
+{
+	get_device(&unit->device);
+
+	return unit;
+}
+
+static inline void fw_unit_put(struct fw_unit *unit)
+{
+	put_device(&unit->device);
+}
+
 #define CSR_OFFSET	0x40
 #define CSR_LEAF	0x80
 #define CSR_DIRECTORY	0xc0

drivers/firewire/fw-iso.c

@@ -126,7 +126,6 @@ fw_iso_context_create(struct fw_card *card, int type,
 
 	return ctx;
 }
-EXPORT_SYMBOL(fw_iso_context_create);
 
 void fw_iso_context_destroy(struct fw_iso_context *ctx)
 {
@@ -134,14 +133,12 @@ void fw_iso_context_destroy(struct fw_iso_context *ctx)
 
 	card->driver->free_iso_context(ctx);
 }
-EXPORT_SYMBOL(fw_iso_context_destroy);
 
 int
 fw_iso_context_start(struct fw_iso_context *ctx, int cycle, int sync, int tags)
 {
 	return ctx->card->driver->start_iso(ctx, cycle, sync, tags);
 }
-EXPORT_SYMBOL(fw_iso_context_start);
 
 int
 fw_iso_context_queue(struct fw_iso_context *ctx,
@@ -153,11 +150,9 @@ fw_iso_context_queue(struct fw_iso_context *ctx,
 
 	return card->driver->queue_iso(ctx, packet, buffer, payload);
 }
-EXPORT_SYMBOL(fw_iso_context_queue);
 
 int
 fw_iso_context_stop(struct fw_iso_context *ctx)
 {
 	return ctx->card->driver->stop_iso(ctx);
 }
-EXPORT_SYMBOL(fw_iso_context_stop);

drivers/firewire/fw-ohci.h

@@ -30,6 +30,7 @@
 #define  OHCI1394_HCControl_softReset		0x00010000
 #define OHCI1394_SelfIDBuffer                 0x064
 #define OHCI1394_SelfIDCount                  0x068
+#define  OHCI1394_SelfIDCount_selfIDError	0x80000000
 #define OHCI1394_IRMultiChanMaskHiSet         0x070
 #define OHCI1394_IRMultiChanMaskHiClear       0x074
 #define OHCI1394_IRMultiChanMaskLoSet         0x078
@@ -124,6 +125,7 @@
 #define OHCI1394_lockRespErr		0x00000200
 #define OHCI1394_selfIDComplete		0x00010000
 #define OHCI1394_busReset		0x00020000
+#define OHCI1394_regAccessFail		0x00040000
 #define OHCI1394_phy			0x00080000
 #define OHCI1394_cycleSynch		0x00100000
 #define OHCI1394_cycle64Seconds		0x00200000

drivers/firewire/fw-topology.c

@@ -108,6 +108,7 @@ static struct fw_node *fw_node_create(u32 sid, int port_count, int color)
 	node->node_id = LOCAL_BUS | SELF_ID_PHY_ID(sid);
 	node->link_on = SELF_ID_LINK_ON(sid);
 	node->phy_speed = SELF_ID_PHY_SPEED(sid);
+	node->initiated_reset = SELF_ID_PHY_INITIATOR(sid);
 	node->port_count = port_count;
 
 	atomic_set(&node->ref_count, 1);
@@ -289,12 +290,11 @@ static struct fw_node *build_tree(struct fw_card *card,
 			beta_repeaters_present = true;
 
 		/*
-		 * If all PHYs does not report the same gap count
-		 * setting, we fall back to 63 which will force a gap
-		 * count reconfiguration and a reset.
+		 * If PHYs report different gap counts, set an invalid count
+		 * which will force a gap count reconfiguration and a reset.
 		 */
 		if (SELF_ID_GAP_COUNT(q) != gap_count)
-			gap_count = 63;
+			gap_count = 0;
 
 		update_hop_count(node);
 
@@ -431,6 +431,8 @@ update_tree(struct fw_card *card, struct fw_node *root)
 			event = FW_NODE_LINK_OFF;
 		else if (!node0->link_on && node1->link_on)
 			event = FW_NODE_LINK_ON;
+		else if (node1->initiated_reset && node1->link_on)
+			event = FW_NODE_INITIATED_RESET;
 		else
 			event = FW_NODE_UPDATED;
 

drivers/firewire/fw-topology.h

@@ -20,11 +20,12 @@
 #define __fw_topology_h
 
 enum {
-	FW_NODE_CREATED =   0x00,
-	FW_NODE_UPDATED =   0x01,
-	FW_NODE_DESTROYED = 0x02,
-	FW_NODE_LINK_ON =   0x03,
-	FW_NODE_LINK_OFF =  0x04,
+	FW_NODE_CREATED,
+	FW_NODE_UPDATED,
+	FW_NODE_DESTROYED,
+	FW_NODE_LINK_ON,
+	FW_NODE_LINK_OFF,
+	FW_NODE_INITIATED_RESET,
 };
 
 struct fw_node {

drivers/firewire/fw-transaction.c

@@ -18,6 +18,7 @@
  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
+#include <linux/completion.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
@@ -294,42 +295,40 @@ fw_send_request(struct fw_card *card, struct fw_transaction *t,
 }
 EXPORT_SYMBOL(fw_send_request);
 
+struct fw_phy_packet {
+	struct fw_packet packet;
+	struct completion done;
+};
+
 static void
 transmit_phy_packet_callback(struct fw_packet *packet,
 			     struct fw_card *card, int status)
 {
-	kfree(packet);
-}
-
-static void send_phy_packet(struct fw_card *card, u32 data, int generation)
-{
-	struct fw_packet *packet;
-
-	packet = kzalloc(sizeof(*packet), GFP_ATOMIC);
-	if (packet == NULL)
-		return;
-
-	packet->header[0] = data;
-	packet->header[1] = ~data;
-	packet->header_length = 8;
-	packet->payload_length = 0;
-	packet->speed = SCODE_100;
-	packet->generation = generation;
-	packet->callback = transmit_phy_packet_callback;
+	struct fw_phy_packet *p =
+			container_of(packet, struct fw_phy_packet, packet);
 
-	card->driver->send_request(card, packet);
+	complete(&p->done);
 }
 
 void fw_send_phy_config(struct fw_card *card,
 			int node_id, int generation, int gap_count)
 {
-	u32 q;
-
-	q = PHY_IDENTIFIER(PHY_PACKET_CONFIG) |
-		PHY_CONFIG_ROOT_ID(node_id) |
-		PHY_CONFIG_GAP_COUNT(gap_count);
-
-	send_phy_packet(card, q, generation);
+	struct fw_phy_packet p;
+	u32 data = PHY_IDENTIFIER(PHY_PACKET_CONFIG) |
+		   PHY_CONFIG_ROOT_ID(node_id) |
+		   PHY_CONFIG_GAP_COUNT(gap_count);
+
+	p.packet.header[0] = data;
+	p.packet.header[1] = ~data;
+	p.packet.header_length = 8;
+	p.packet.payload_length = 0;
+	p.packet.speed = SCODE_100;
+	p.packet.generation = generation;
+	p.packet.callback = transmit_phy_packet_callback;
+	init_completion(&p.done);
+
+	card->driver->send_request(card, &p.packet);
+	wait_for_completion(&p.done);
 }
 
 void fw_flush_transactions(struct fw_card *card)
@@ -389,21 +388,21 @@ lookup_enclosing_address_handler(struct list_head *list,
 static DEFINE_SPINLOCK(address_handler_lock);
 static LIST_HEAD(address_handler_list);
 
-const struct fw_address_region fw_low_memory_region =
-	{ .start = 0x000000000000ULL, .end = 0x000100000000ULL,  };
 const struct fw_address_region fw_high_memory_region =
 	{ .start = 0x000100000000ULL, .end = 0xffffe0000000ULL,  };
+EXPORT_SYMBOL(fw_high_memory_region);
+
+#if 0
+const struct fw_address_region fw_low_memory_region =
+	{ .start = 0x000000000000ULL, .end = 0x000100000000ULL,  };
 const struct fw_address_region fw_private_region =
 	{ .start = 0xffffe0000000ULL, .end = 0xfffff0000000ULL,  };
 const struct fw_address_region fw_csr_region =
-	{ .start = 0xfffff0000000ULL, .end = 0xfffff0000800ULL,  };
+	{ .start = CSR_REGISTER_BASE,
+	  .end   = CSR_REGISTER_BASE | CSR_CONFIG_ROM_END,  };
 const struct fw_address_region fw_unit_space_region =
 	{ .start = 0xfffff0000900ULL, .end = 0x1000000000000ULL, };
-EXPORT_SYMBOL(fw_low_memory_region);
-EXPORT_SYMBOL(fw_high_memory_region);
-EXPORT_SYMBOL(fw_private_region);
-EXPORT_SYMBOL(fw_csr_region);
-EXPORT_SYMBOL(fw_unit_space_region);
+#endif  /*  0  */
 
 /**
  * Allocate a range of addresses in the node space of the OHCI
@@ -747,7 +746,8 @@ fw_core_handle_response(struct fw_card *card, struct fw_packet *p)
 EXPORT_SYMBOL(fw_core_handle_response);
 
 static const struct fw_address_region topology_map_region =
-	{ .start = 0xfffff0001000ull, .end = 0xfffff0001400ull, };
+	{ .start = CSR_REGISTER_BASE | CSR_TOPOLOGY_MAP,
+	  .end   = CSR_REGISTER_BASE | CSR_TOPOLOGY_MAP_END, };
 
 static void
 handle_topology_map(struct fw_card *card, struct fw_request *request,
@@ -785,7 +785,8 @@ static struct fw_address_handler topology_map = {
 };
 
 static const struct fw_address_region registers_region =
-	{ .start = 0xfffff0000000ull, .end = 0xfffff0000400ull, };
+	{ .start = CSR_REGISTER_BASE,
+	  .end   = CSR_REGISTER_BASE | CSR_CONFIG_ROM, };
 
 static void
 handle_registers(struct fw_card *card, struct fw_request *request,
@@ -794,7 +795,7 @@ handle_registers(struct fw_card *card, struct fw_request *request,
 		 unsigned long long offset,
 		 void *payload, size_t length, void *callback_data)
 {
-	int reg = offset - CSR_REGISTER_BASE;
+	int reg = offset & ~CSR_REGISTER_BASE;
 	unsigned long long bus_time;
 	__be32 *data = payload;
 

drivers/firewire/fw-transaction.h

@@ -201,11 +201,7 @@ struct fw_address_region {
 	u64 end;
 };
 
-extern const struct fw_address_region fw_low_memory_region;
 extern const struct fw_address_region fw_high_memory_region;
-extern const struct fw_address_region fw_private_region;
-extern const struct fw_address_region fw_csr_region;
-extern const struct fw_address_region fw_unit_space_region;
 
 int fw_core_add_address_handler(struct fw_address_handler *handler,
 				const struct fw_address_region *region);
@@ -221,12 +217,9 @@ struct fw_card {
 	const struct fw_card_driver *driver;
 	struct device *device;
 	atomic_t device_count;
-	struct kref kref;
 
 	int node_id;
 	int generation;
-	/* This is the generation used for timestamping incoming requests. */
-	int request_generation;
 	int current_tlabel, tlabel_mask;
 	struct list_head transaction_list;
 	struct timer_list flush_timer;
@@ -263,9 +256,6 @@ struct fw_card {
 	int bm_generation;
 };
 
-struct fw_card *fw_card_get(struct fw_card *card);
-void fw_card_put(struct fw_card *card);
-
 /*
  * The iso packet format allows for an immediate header/payload part
  * stored in 'header' immediately after the packet info plus an

drivers/ieee1394/csr.c

@@ -133,8 +133,7 @@ static void host_reset(struct hpsb_host *host)
                 host->csr.state &= ~0x100;
         }
 
-        host->csr.topology_map[1] =
-                cpu_to_be32(be32_to_cpu(host->csr.topology_map[1]) + 1);
+	be32_add_cpu(&host->csr.topology_map[1], 1);
         host->csr.topology_map[2] = cpu_to_be32(host->node_count << 16
                                                 | host->selfid_count);
         host->csr.topology_map[0] =
@@ -142,8 +141,7 @@ static void host_reset(struct hpsb_host *host)
                             | csr_crc16(host->csr.topology_map + 1,
                                         host->selfid_count + 2));
 
-        host->csr.speed_map[1] =
-                cpu_to_be32(be32_to_cpu(host->csr.speed_map[1]) + 1);
+	be32_add_cpu(&host->csr.speed_map[1], 1);
         host->csr.speed_map[0] = cpu_to_be32(0x3f1 << 16
                                              | csr_crc16(host->csr.speed_map+1,
                                                          0x3f1));

drivers/ieee1394/dv1394.c

@@ -2179,8 +2179,7 @@ static struct ieee1394_device_id dv1394_id_table[] = {
 MODULE_DEVICE_TABLE(ieee1394, dv1394_id_table);
 
 static struct hpsb_protocol_driver dv1394_driver = {
-	.name		= "dv1394",
-	.id_table	= dv1394_id_table,
+	.name = "dv1394",
 };
 
 
@@ -2568,7 +2567,6 @@ static int __init dv1394_init_module(void)
 
 	cdev_init(&dv1394_cdev, &dv1394_fops);
 	dv1394_cdev.owner = THIS_MODULE;
-	kobject_set_name(&dv1394_cdev.kobj, "dv1394");
 	ret = cdev_add(&dv1394_cdev, IEEE1394_DV1394_DEV, 16);
 	if (ret) {
 		printk(KERN_ERR "dv1394: unable to register character device\n");

drivers/ieee1394/highlevel.c

@@ -339,7 +339,7 @@ u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl,
 	if ((alignment & 3) || (alignment > 0x800000000000ULL) ||
 	    (hweight64(alignment) != 1)) {
 		HPSB_ERR("%s called with invalid alignment: 0x%048llx",
-			 __FUNCTION__, (unsigned long long)alignment);
+			 __func__, (unsigned long long)alignment);
 		return retval;
 	}
 
@@ -354,7 +354,7 @@ u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl,
 	if (((start|end) & ~align_mask) || (start >= end) ||
 	    (end > CSR1212_ALL_SPACE_END)) {
 		HPSB_ERR("%s called with invalid addresses "
-			 "(start = %012Lx  end = %012Lx)", __FUNCTION__,
+			 "(start = %012Lx  end = %012Lx)", __func__,
 			 (unsigned long long)start,(unsigned long long)end);
 		return retval;
 	}
@@ -422,7 +422,7 @@ int hpsb_register_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host,
 
 	if (((start|end) & 3) || (start >= end) ||
 	    (end > CSR1212_ALL_SPACE_END)) {
-		HPSB_ERR("%s called with invalid addresses", __FUNCTION__);
+		HPSB_ERR("%s called with invalid addresses", __func__);
 		return 0;
 	}
 

drivers/ieee1394/ieee1394_core.c

@@ -242,7 +242,7 @@ int hpsb_bus_reset(struct hpsb_host *host)
 {
 	if (host->in_bus_reset) {
 		HPSB_NOTICE("%s called while bus reset already in progress",
-			    __FUNCTION__);
+			    __func__);
 		return 1;
 	}
 
@@ -373,6 +373,8 @@ static void build_speed_map(struct hpsb_host *host, int nodecount)
 			if (sid->port2 == SELFID_PORT_CHILD) cldcnt[n]++;
 
 			speedcap[n] = sid->speed;
+			if (speedcap[n] > host->csr.lnk_spd)
+				speedcap[n] = host->csr.lnk_spd;
 			n--;
 		}
 	}

drivers/ieee1394/nodemgr.c

@@ -701,7 +701,11 @@ static int nodemgr_bus_match(struct device * dev, struct device_driver * drv)
 		return 0;
 
 	driver = container_of(drv, struct hpsb_protocol_driver, driver);
-	for (id = driver->id_table; id->match_flags != 0; id++) {
+	id = driver->id_table;
+	if (!id)
+		return 0;
+
+	for (; id->match_flags != 0; id++) {
 		if ((id->match_flags & IEEE1394_MATCH_VENDOR_ID) &&
 		    id->vendor_id != ud->vendor_id)
 			continue;

drivers/ieee1394/pcilynx.c

@@ -226,7 +226,7 @@ static int get_phy_reg(struct ti_lynx *lynx, int addr)
         if (addr > 15) {
                 PRINT(KERN_ERR, lynx->id,
                       "%s: PHY register address %d out of range",
-		      __FUNCTION__, addr);
+		      __func__, addr);
                 return -1;
         }
 
@@ -238,7 +238,7 @@ static int get_phy_reg(struct ti_lynx *lynx, int addr)
 
                 if (i > 10000) {
                         PRINT(KERN_ERR, lynx->id, "%s: runaway loop, aborting",
-			      __FUNCTION__);
+			      __func__);
                         retval = -1;
                         break;
                 }
@@ -261,13 +261,13 @@ static int set_phy_reg(struct ti_lynx *lynx, int addr, int val)
 
         if (addr > 15) {
                 PRINT(KERN_ERR, lynx->id,
-                      "%s: PHY register address %d out of range", __FUNCTION__, addr);
+		      "%s: PHY register address %d out of range", __func__, addr);
                 return -1;
         }
 
         if (val > 0xff) {
                 PRINT(KERN_ERR, lynx->id,
-                      "%s: PHY register value %d out of range", __FUNCTION__, val);
+		      "%s: PHY register value %d out of range", __func__, val);
                 return -1;
         }
 
@@ -287,7 +287,7 @@ static int sel_phy_reg_page(struct ti_lynx *lynx, int page)
 
         if (page > 7) {
                 PRINT(KERN_ERR, lynx->id,
-                      "%s: PHY page %d out of range", __FUNCTION__, page);
+		      "%s: PHY page %d out of range", __func__, page);
                 return -1;
         }
 
@@ -309,7 +309,7 @@ static int sel_phy_reg_port(struct ti_lynx *lynx, int port)
 
         if (port > 15) {
                 PRINT(KERN_ERR, lynx->id,
-                      "%s: PHY port %d out of range", __FUNCTION__, port);
+		      "%s: PHY port %d out of range", __func__, port);
                 return -1;
         }
 
@@ -738,8 +738,7 @@ static int lynx_devctl(struct hpsb_host *host, enum devctl_cmd cmd, int arg)
                 spin_lock_irqsave(&lynx->async.queue_lock, flags);
 
                 reg_write(lynx, DMA_CHAN_CTRL(CHANNEL_ASYNC_SEND), 0);
-		list_splice(&lynx->async.queue, &packet_list);
-		INIT_LIST_HEAD(&lynx->async.queue);
+		list_splice_init(&lynx->async.queue, &packet_list);
 
                 if (list_empty(&lynx->async.pcl_queue)) {
                         spin_unlock_irqrestore(&lynx->async.queue_lock, flags);

drivers/ieee1394/raw1394.c

@@ -2959,7 +2959,6 @@ MODULE_DEVICE_TABLE(ieee1394, raw1394_id_table);
 
 static struct hpsb_protocol_driver raw1394_driver = {
 	.name = "raw1394",
-	.id_table = raw1394_id_table,
 };
 
 /******************************************************************************/
@@ -3004,7 +3003,6 @@ static int __init init_raw1394(void)
 
 	cdev_init(&raw1394_cdev, &raw1394_fops);
 	raw1394_cdev.owner = THIS_MODULE;
-	kobject_set_name(&raw1394_cdev.kobj, RAW1394_DEVICE_NAME);
 	ret = cdev_add(&raw1394_cdev, IEEE1394_RAW1394_DEV, 1);
 	if (ret) {
 		HPSB_ERR("raw1394 failed to register minor device block");

drivers/ieee1394/sbp2.c

@@ -615,7 +615,7 @@ static struct sbp2_command_info *sbp2util_allocate_command_orb(
 		cmd->Current_SCpnt = Current_SCpnt;
 		list_add_tail(&cmd->list, &lu->cmd_orb_inuse);
 	} else
-		SBP2_ERR("%s: no orbs available", __FUNCTION__);
+		SBP2_ERR("%s: no orbs available", __func__);
 	spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
 	return cmd;
 }
@@ -1294,7 +1294,7 @@ static int sbp2_set_busy_timeout(struct sbp2_lu *lu)
 
 	data = cpu_to_be32(SBP2_BUSY_TIMEOUT_VALUE);
 	if (hpsb_node_write(lu->ne, SBP2_BUSY_TIMEOUT_ADDRESS, &data, 4))
-		SBP2_ERR("%s error", __FUNCTION__);
+		SBP2_ERR("%s error", __func__);
 	return 0;
 }
 
@@ -1985,11 +1985,8 @@ static int sbp2scsi_slave_alloc(struct scsi_device *sdev)
 	lu->sdev = sdev;
 	sdev->allow_restart = 1;
 
-	/*
-	 * Update the dma alignment (minimum alignment requirements for
-	 * start and end of DMA transfers) to be a sector
-	 */
-	blk_queue_update_dma_alignment(sdev->request_queue, 511);
+	/* SBP-2 requires quadlet alignment of the data buffers. */
+	blk_queue_update_dma_alignment(sdev->request_queue, 4 - 1);
 
 	if (lu->workarounds & SBP2_WORKAROUND_INQUIRY_36)
 		sdev->inquiry_len = 36;

drivers/ieee1394/video1394.c

@@ -1315,8 +1315,7 @@ static struct ieee1394_device_id video1394_id_table[] = {
 MODULE_DEVICE_TABLE(ieee1394, video1394_id_table);
 
 static struct hpsb_protocol_driver video1394_driver = {
-	.name		= VIDEO1394_DRIVER_NAME,
-	.id_table	= video1394_id_table,
+	.name = VIDEO1394_DRIVER_NAME,
 };
 
 
@@ -1504,7 +1503,6 @@ static int __init video1394_init_module (void)
 
 	cdev_init(&video1394_cdev, &video1394_fops);
 	video1394_cdev.owner = THIS_MODULE;
-	kobject_set_name(&video1394_cdev.kobj, VIDEO1394_DRIVER_NAME);
 	ret = cdev_add(&video1394_cdev, IEEE1394_VIDEO1394_DEV, 16);
 	if (ret) {
 		PRINT_G(KERN_ERR, "video1394: unable to get minor device block");

lib/Kconfig.debug

@@ -583,7 +583,7 @@ config LATENCYTOP
 	  to find out which userspace is blocking on what kernel operations.
 
 config PROVIDE_OHCI1394_DMA_INIT
-	bool "Provide code for enabling DMA over FireWire early on boot"
+	bool "Remote debugging over FireWire early on boot"
 	depends on PCI && X86
 	help
 	  If you want to debug problems which hang or crash the kernel early
@@ -611,6 +611,17 @@ config PROVIDE_OHCI1394_DMA_INIT
 
 	  See Documentation/debugging-via-ohci1394.txt for more information.
 
+config FIREWIRE_OHCI_REMOTE_DMA
+	bool "Remote debugging over FireWire with firewire-ohci"
+	depends on FIREWIRE_OHCI
+	help
+	  This option lets you use the FireWire bus for remote debugging
+	  with help of the firewire-ohci driver. It enables unfiltered
+	  remote DMA in firewire-ohci.
+	  See Documentation/debugging-via-ohci1394.txt for more information.
+
+	  If unsure, say N.
+
 source "samples/Kconfig"
 
 source "lib/Kconfig.kgdb"