Merge

drivers/ieee1394/csr.c

@@ -251,8 +251,7 @@ static void add_host(struct hpsb_host *host)
 
 	csr1212_init_local_csr(host->csr.rom, bus_info, host->csr.max_rom);
 
-	host->csr.rom->max_rom = host->csr.max_rom;
-
+	static const int mr_map[] = { 4, 64, 1024, 0 };
 	root = host->csr.rom->root_kv;
 
 	if(csr1212_attach_keyval_to_directory(root, node_cap) != CSR1212_SUCCESS) {

drivers/ieee1394/csr1212.c

@@ -206,7 +206,9 @@ struct csr1212_csr *csr1212_create_csr(struct csr1212_bus_ops *ops,
 void csr1212_init_local_csr(struct csr1212_csr *csr,
 			    const u_int32_t *bus_info_data, int max_rom)
 {
-	csr->max_rom = max_rom;
+	static const int mr_map[] = { 4, 64, 1024, 0 };
+
+	csr->max_rom = mr_map[max_rom];
 	memcpy(csr->bus_info_data, bus_info_data, csr->bus_info_len);
 }
 

drivers/ieee1394/hosts.c

@@ -187,6 +187,9 @@ int hpsb_add_host(struct hpsb_host *host)
 void hpsb_remove_host(struct hpsb_host *host)
 {
         host->is_shutdown = 1;
+
+	del_timer_sync(&host->delayed_reset);
+
         host->driver = &dummy_driver;
 
         highlevel_remove_host(host);

drivers/ieee1394/ieee1394_core.c

@@ -400,31 +400,35 @@ void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot)
 void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
                       int ackcode)
 {
+	unsigned long flags;
+
+	spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
+
 	packet->ack_code = ackcode;
 
-	if (packet->no_waiter) {
-		/* must not have a tlabel allocated */
+	if (packet->no_waiter || packet->state == hpsb_complete) {
+		/* if packet->no_waiter, must not have a tlabel allocated */
+		spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 		hpsb_free_packet(packet);
 		return;
 	}
 
+	atomic_dec(&packet->refcnt);	/* drop HC's reference */
+	/* here the packet must be on the host->pending_packet_queue */
+
 	if (ackcode != ACK_PENDING || !packet->expect_response) {
-		atomic_dec(&packet->refcnt);
-		skb_unlink(packet->skb);
 		packet->state = hpsb_complete;
+		__skb_unlink(packet->skb, &host->pending_packet_queue);
+		spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 		queue_packet_complete(packet);
 		return;
 	}
 
-	if (packet->state == hpsb_complete) {
-		hpsb_free_packet(packet);
-		return;
-	}
-
-	atomic_dec(&packet->refcnt);
 	packet->state = hpsb_pending;
 	packet->sendtime = jiffies;
 
+	spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
+
 	mod_timer(&host->timeout, jiffies + host->timeout_interval);
 }
 
@@ -658,14 +662,13 @@ static void handle_packet_response(struct hpsb_host *host, int tcode,
         }
 
         if (!tcode_match) {
+		spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
                 HPSB_INFO("unsolicited response packet received - tcode mismatch");
                 dump_packet("contents:", data, 16);
-		spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
                 return;
         }
 
 	__skb_unlink(skb, skb->list);
-	spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 
 	if (packet->state == hpsb_queued) {
 		packet->sendtime = jiffies;
@@ -673,6 +676,8 @@ static void handle_packet_response(struct hpsb_host *host, int tcode,
 	}
 
 	packet->state = hpsb_complete;
+	spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
+
 	queue_packet_complete(packet);
 }
 
@@ -1002,6 +1007,10 @@ static DECLARE_MUTEX_LOCKED(khpsbpkt_sig);
 
 static void queue_packet_complete(struct hpsb_packet *packet)
 {
+	if (packet->no_waiter) {
+		hpsb_free_packet(packet);
+		return;
+	}
 	if (packet->complete_routine != NULL) {
 		skb_queue_tail(&hpsbpkt_queue, packet->skb);
 
@@ -1042,10 +1051,11 @@ static int hpsbpkt_thread(void *__hi)
 
 static int __init ieee1394_init(void)
 {
-	int i;
+	int i, ret;
 
 	skb_queue_head_init(&hpsbpkt_queue);
 
+	/* non-fatal error */
 	if (hpsb_init_config_roms()) {
 		HPSB_ERR("Failed to initialize some config rom entries.\n");
 		HPSB_ERR("Some features may not be available\n");
@@ -1054,32 +1064,85 @@ static int __init ieee1394_init(void)
 	khpsbpkt_pid = kernel_thread(hpsbpkt_thread, NULL, CLONE_KERNEL);
 	if (khpsbpkt_pid < 0) {
 		HPSB_ERR("Failed to start hpsbpkt thread!\n");
-		return -ENOMEM;
+		ret = -ENOMEM;
+		goto exit_cleanup_config_roms;
 	}
 
-	devfs_mk_dir("ieee1394");
-
 	if (register_chrdev_region(IEEE1394_CORE_DEV, 256, "ieee1394")) {
 		HPSB_ERR("unable to register character device major %d!\n", IEEE1394_MAJOR);
-		return -ENODEV;
+		ret = -ENODEV;
+		goto exit_release_kernel_thread;
 	}
 
-	devfs_mk_dir("ieee1394");
+	/* actually this is a non-fatal error */
+	ret = devfs_mk_dir("ieee1394");
+	if (ret < 0) {
+		HPSB_ERR("unable to make devfs dir for device major %d!\n", IEEE1394_MAJOR);
+		goto release_chrdev;
+	}
 
-	bus_register(&ieee1394_bus_type);
-	for (i = 0; fw_bus_attrs[i]; i++)
-		bus_create_file(&ieee1394_bus_type, fw_bus_attrs[i]);
-	class_register(&hpsb_host_class);
+	ret = bus_register(&ieee1394_bus_type);
+	if (ret < 0) {
+		HPSB_INFO("bus register failed");
+		goto release_devfs;
+	}
 
-	if (init_csr())
-		return -ENOMEM;
+	for (i = 0; fw_bus_attrs[i]; i++) {
+		ret = bus_create_file(&ieee1394_bus_type, fw_bus_attrs[i]);
+		if (ret < 0) {
+			while (i >= 0) {
+				bus_remove_file(&ieee1394_bus_type,
+						fw_bus_attrs[i--]);
+			}
+			bus_unregister(&ieee1394_bus_type);
+			goto release_devfs;
+		}
+	}
 
-	if (!disable_nodemgr)
-		init_ieee1394_nodemgr();
-	else
+	ret = class_register(&hpsb_host_class);
+	if (ret < 0)
+		goto release_all_bus;
+
+	ret = init_csr();
+	if (ret) {
+		HPSB_INFO("init csr failed");
+		ret = -ENOMEM;
+		goto release_class;
+	}
+
+	if (disable_nodemgr) {
 		HPSB_INFO("nodemgr functionality disabled");
+		return 0;
+	}
+
+	ret = init_ieee1394_nodemgr();
+	if (ret < 0) {
+		HPSB_INFO("init nodemgr failed");
+		goto cleanup_csr;
+	}
 
 	return 0;
+
+cleanup_csr:
+	cleanup_csr();
+release_class:
+	class_unregister(&hpsb_host_class);
+release_all_bus:
+	for (i = 0; fw_bus_attrs[i]; i++)
+		bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
+	bus_unregister(&ieee1394_bus_type);
+release_devfs:
+	devfs_remove("ieee1394");
+release_chrdev:
+	unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
+exit_release_kernel_thread:
+	if (khpsbpkt_pid >= 0) {
+		kill_proc(khpsbpkt_pid, SIGTERM, 1);
+		wait_for_completion(&khpsbpkt_complete);
+	}
+exit_cleanup_config_roms:
+	hpsb_cleanup_config_roms();
+	return ret;
 }
 
 static void __exit ieee1394_cleanup(void)

drivers/ieee1394/ieee1394_core.h

@@ -101,8 +101,6 @@ void hpsb_free_packet(struct hpsb_packet *packet);
  *
  * Use the functions, not the variable.
  */
-#include <asm/atomic.h>
-
 static inline unsigned int get_hpsb_generation(struct hpsb_host *host)
 {
         return atomic_read(&host->generation);

drivers/ieee1394/nodemgr.c

@@ -1502,6 +1502,10 @@ static int nodemgr_host_thread(void *__hi)
 			 * start the the waiting over again */
 			while (!down_trylock(&hi->reset_sem))
 				i = 0;
+
+			/* Check the kill_me again */
+			if (hi->kill_me)
+				goto caught_signal;
 		}
 
 		if (!nodemgr_check_irm_capability(host, reset_cycles)) {
@@ -1702,12 +1706,23 @@ static struct hpsb_highlevel nodemgr_highlevel = {
 	.remove_host =	nodemgr_remove_host,
 };
 
-void init_ieee1394_nodemgr(void)
+int init_ieee1394_nodemgr(void)
 {
-	class_register(&nodemgr_ne_class);
-	class_register(&nodemgr_ud_class);
+	int ret;
+
+	ret = class_register(&nodemgr_ne_class);
+	if (ret < 0)
+		return ret;
+
+	ret = class_register(&nodemgr_ud_class);
+	if (ret < 0) {
+		class_unregister(&nodemgr_ne_class);
+		return ret;
+	}
 
 	hpsb_register_highlevel(&nodemgr_highlevel);
+
+	return 0;
 }
 
 void cleanup_ieee1394_nodemgr(void)

drivers/ieee1394/nodemgr.h

@@ -192,7 +192,7 @@ int hpsb_node_lock(struct node_entry *ne, u64 addr,
 int nodemgr_for_each_host(void *__data, int (*cb)(struct hpsb_host *, void *));
 
 
-void init_ieee1394_nodemgr(void);
+int init_ieee1394_nodemgr(void);
 void cleanup_ieee1394_nodemgr(void);