diff options
author | Kristian Høgsberg <krh@redhat.com> | 2007-05-07 20:33:32 -0400 |
---|---|---|
committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2007-05-10 18:24:13 +0200 |
commit | c781c06d119d04601727f2fbc30151e6760d536d (patch) | |
tree | 1faf19acc6bc2a2a3b3bdae8368e395e75cd7518 /drivers/firewire | |
parent | e175569c4639872b5cf242c9d4a71cc40c5f3c29 (diff) |
firewire: Clean up comment style.
Drop filenames from file preamble, drop editor annotations and
use standard indent style for block comments.
Signed-off-by: Kristian Hoegsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (fixed typo)
Diffstat (limited to 'drivers/firewire')
-rw-r--r-- | drivers/firewire/fw-card.c | 105 | ||||
-rw-r--r-- | drivers/firewire/fw-cdev.c | 33 | ||||
-rw-r--r-- | drivers/firewire/fw-device.c | 101 | ||||
-rw-r--r-- | drivers/firewire/fw-device.h | 5 | ||||
-rw-r--r-- | drivers/firewire/fw-iso.c | 4 | ||||
-rw-r--r-- | drivers/firewire/fw-ohci.c | 144 | ||||
-rw-r--r-- | drivers/firewire/fw-sbp2.c | 101 | ||||
-rw-r--r-- | drivers/firewire/fw-topology.c | 65 | ||||
-rw-r--r-- | drivers/firewire/fw-topology.h | 5 | ||||
-rw-r--r-- | drivers/firewire/fw-transaction.c | 71 | ||||
-rw-r--r-- | drivers/firewire/fw-transaction.h | 58 |
11 files changed, 439 insertions, 253 deletions
diff --git a/drivers/firewire/fw-card.c b/drivers/firewire/fw-card.c index 216965615ee..b2aa85555a7 100644 --- a/drivers/firewire/fw-card.c +++ b/drivers/firewire/fw-card.c @@ -1,8 +1,5 @@ -/* -*- c-basic-offset: 8 -*- - * - * fw-card.c - card level functions - * - * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net> +/* + * Copyright (C) 2005-2007 Kristian Hoegsberg <krh@bitplanet.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -69,12 +66,14 @@ generate_config_rom (struct fw_card *card, size_t *config_rom_length) static u32 config_rom[256]; int i, j, length; - /* Initialize contents of config rom buffer. On the OHCI + /* + * Initialize contents of config rom buffer. On the OHCI * controller, block reads to the config rom accesses the host * memory, but quadlet read access the hardware bus info block * registers. That's just crack, but it means we should make * sure the contents of bus info block in host memory mathces - * the version stored in the OHCI registers. */ + * the version stored in the OHCI registers. + */ memset(config_rom, 0, sizeof config_rom); config_rom[0] = bib_crc_length(4) | bib_info_length(4) | bib_crc(0); @@ -143,9 +142,11 @@ fw_core_add_descriptor (struct fw_descriptor *desc) { size_t i; - /* Check descriptor is valid; the length of all blocks in the + /* + * Check descriptor is valid; the length of all blocks in the * descriptor has to add up to exactly the length of the - * block. */ + * block. + */ i = 0; while (i < desc->length) i += (desc->data[i] >> 16) + 1; @@ -228,7 +229,8 @@ fw_card_bm_work(struct work_struct *work) if (card->bm_generation + 1 == generation || (card->bm_generation != generation && grace)) { - /* This first step is to figure out who is IRM and + /* + * This first step is to figure out who is IRM and * then try to become bus manager. If the IRM is not * well defined (e.g. does not have an active link * layer or does not responds to our lock request, we @@ -236,7 +238,8 @@ fw_card_bm_work(struct work_struct *work) * In that case, we do a goto into the gap count logic * so that when we do the reset, we still optimize the * gap count. That could well save a reset in the - * next generation. */ + * next generation. + */ irm_id = card->irm_node->node_id; if (!card->irm_node->link_on) { @@ -260,8 +263,10 @@ fw_card_bm_work(struct work_struct *work) wait_for_completion(&bmd.done); if (bmd.rcode == RCODE_GENERATION) { - /* Another bus reset happened. Just return, - * the BM work has been rescheduled. */ + /* + * Another bus reset happened. Just return, + * the BM work has been rescheduled. + */ return; } @@ -271,48 +276,62 @@ fw_card_bm_work(struct work_struct *work) spin_lock_irqsave(&card->lock, flags); if (bmd.rcode != RCODE_COMPLETE) { - /* The lock request failed, maybe the IRM + /* + * The lock request failed, maybe the IRM * isn't really IRM capable after all. Let's * do a bus reset and pick the local node as - * root, and thus, IRM. */ + * root, and thus, IRM. + */ new_root_id = card->local_node->node_id; fw_notify("BM lock failed, making local node (%02x) root.\n", new_root_id); goto pick_me; } } else if (card->bm_generation != generation) { - /* OK, we weren't BM in the last generation, and it's + /* + * OK, we weren't BM in the last generation, and it's * less than 100ms since last bus reset. Reschedule - * this task 100ms from now. */ + * this task 100ms from now. + */ spin_unlock_irqrestore(&card->lock, flags); schedule_delayed_work(&card->work, DIV_ROUND_UP(HZ, 10)); return; } - /* We're bus manager for this generation, so next step is to + /* + * We're bus manager for this generation, so next step is to * make sure we have an active cycle master and do gap count - * optimization. */ + * optimization. + */ card->bm_generation = generation; if (root == NULL) { - /* Either link_on is false, or we failed to read the - * config rom. In either case, pick another root. */ + /* + * Either link_on is false, or we failed to read the + * config rom. In either case, pick another root. + */ new_root_id = card->local_node->node_id; } else if (atomic_read(&root->state) != FW_DEVICE_RUNNING) { - /* If we haven't probed this device yet, bail out now - * and let's try again once that's done. */ + /* + * If we haven't probed this device yet, bail out now + * and let's try again once that's done. + */ spin_unlock_irqrestore(&card->lock, flags); return; } else if (root->config_rom[2] & bib_cmc) { - /* FIXME: I suppose we should set the cmstr bit in the + /* + * FIXME: I suppose we should set the cmstr bit in the * STATE_CLEAR register of this node, as described in * 1394-1995, 8.4.2.6. Also, send out a force root - * packet for this node. */ + * packet for this node. + */ new_root_id = root_id; } else { - /* Current root has an active link layer and we + /* + * Current root has an active link layer and we * successfully read the config rom, but it's not - * cycle master capable. */ + * cycle master capable. + */ new_root_id = card->local_node->node_id; } @@ -324,9 +343,11 @@ fw_card_bm_work(struct work_struct *work) else gap_count = 63; - /* Finally, figure out if we should do a reset or not. If we've + /* + * 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 - * have either a new root or a new gap count setting, let's do it. */ + * 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)) @@ -391,8 +412,10 @@ fw_card_add(struct fw_card *card, PHY_LINK_ACTIVE | PHY_CONTENDER) < 0) return -EIO; - /* The subsystem grabs a reference when the card is added and - * drops it when the driver calls fw_core_remove_card. */ + /* + * 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); down_write(&card_rwsem); @@ -405,11 +428,13 @@ fw_card_add(struct fw_card *card, EXPORT_SYMBOL(fw_card_add); -/* The next few functions implements a dummy driver that use once a +/* + * The next few functions implements a dummy driver that use once a * card driver shuts down an fw_card. This allows the driver to * cleanly unload, as all IO to the card will be handled by the dummy * driver instead of calling into the (possibly) unloaded module. The - * dummy driver just fails all IO. */ + * dummy driver just fails all IO. + */ static int dummy_enable(struct fw_card *card, u32 *config_rom, size_t length) @@ -429,8 +454,10 @@ static int dummy_set_config_rom(struct fw_card *card, u32 *config_rom, size_t length) { - /* We take the card out of card_list before setting the dummy - * driver, so this should never get called. */ + /* + * We take the card out of card_list before setting the dummy + * driver, so this should never get called. + */ BUG(); return -1; } @@ -510,9 +537,11 @@ release_card(struct kref *kref) kfree(card); } -/* An assumption for fw_card_put() is that the card driver allocates +/* + * 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. */ + * before the last ref is dropped. + */ void fw_card_put(struct fw_card *card) { @@ -524,8 +553,6 @@ int fw_core_initiate_bus_reset(struct fw_card *card, int short_reset) { int reg = short_reset ? 5 : 1; - /* The following values happen to be the same bit. However be - * explicit for clarity. */ int bit = short_reset ? PHY_BUS_SHORT_RESET : PHY_BUS_RESET; return card->driver->update_phy_reg(card, reg, 0, bit); diff --git a/drivers/firewire/fw-cdev.c b/drivers/firewire/fw-cdev.c index 88b8fd917f5..c876ac3c50e 100644 --- a/drivers/firewire/fw-cdev.c +++ b/drivers/firewire/fw-cdev.c @@ -1,8 +1,7 @@ -/* -*- c-basic-offset: 8 -*- +/* + * Char device for device raw access * - * fw-device-cdev.c - Char device for device raw access - * - * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net> + * Copyright (C) 2005-2007 Kristian Hoegsberg <krh@bitplanet.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -36,9 +35,6 @@ #include "fw-topology.h" #include "fw-device.h" -/* dequeue_event() just kfree()'s the event, so the event has to be - * the first field in the struct. */ - struct client; struct client_resource { struct list_head link; @@ -46,6 +42,11 @@ struct client_resource { u32 handle; }; +/* + * dequeue_event() just kfree()'s the event, so the event has to be + * the first field in the struct. + */ + struct event { struct { void *data; size_t size; } v[2]; struct list_head link; @@ -691,13 +692,15 @@ static int ioctl_queue_iso(struct client *client, void *buffer) if (ctx == NULL || request->handle != 0) return -EINVAL; - /* If the user passes a non-NULL data pointer, has mmap()'ed + /* + * If the user passes a non-NULL data pointer, has mmap()'ed * the iso buffer, and the pointer points inside the buffer, * we setup the payload pointers accordingly. Otherwise we * set them both to 0, which will still let packets with * payload_length == 0 through. In other words, if no packets * use the indirect payload, the iso buffer need not be mapped - * and the request->data pointer is ignored.*/ + * and the request->data pointer is ignored. + */ payload = (unsigned long)request->data - client->vm_start; buffer_end = client->buffer.page_count << PAGE_SHIFT; @@ -720,8 +723,10 @@ static int ioctl_queue_iso(struct client *client, void *buffer) if (ctx->type == FW_ISO_CONTEXT_TRANSMIT) { header_length = u.packet.header_length; } else { - /* We require that header_length is a multiple of - * the fixed header size, ctx->header_size */ + /* + * We require that header_length is a multiple of + * the fixed header size, ctx->header_size. + */ if (ctx->header_size == 0) { if (u.packet.header_length > 0) return -EINVAL; @@ -908,8 +913,10 @@ static int fw_device_op_release(struct inode *inode, struct file *file) list_for_each_entry_safe(r, next_r, &client->resource_list, link) r->release(client, r); - /* FIXME: We should wait for the async tasklets to stop - * running before freeing the memory. */ + /* + * FIXME: We should wait for the async tasklets to stop + * running before freeing the memory. + */ list_for_each_entry_safe(e, next_e, &client->event_list, link) kfree(e); diff --git a/drivers/firewire/fw-device.c b/drivers/firewire/fw-device.c index 99d1c418d2b..8e5f17f5e98 100644 --- a/drivers/firewire/fw-device.c +++ b/drivers/firewire/fw-device.c @@ -1,6 +1,5 @@ -/* -*- c-basic-offset: 8 -*- - * - * fw-device.c - Device probing and sysfs code. +/* + * Device probing and sysfs code. * * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net> * @@ -174,8 +173,10 @@ static void fw_device_release(struct device *dev) struct fw_device *device = fw_device(dev); unsigned long flags; - /* Take the card lock so we don't set this to NULL while a - * FW_NODE_UPDATED callback is being handled. */ + /* + * Take the card lock so we don't set this to NULL while a + * FW_NODE_UPDATED callback is being handled. + */ spin_lock_irqsave(&device->card->lock, flags); device->node->data = NULL; spin_unlock_irqrestore(&device->card->lock, flags); @@ -421,34 +422,42 @@ static int read_bus_info_block(struct fw_device *device) for (i = 0; i < 5; i++) { if (read_rom(device, i, &rom[i]) != RCODE_COMPLETE) return -1; - /* As per IEEE1212 7.2, during power-up, devices can + /* + * As per IEEE1212 7.2, during power-up, devices can * reply with a 0 for the first quadlet of the config * rom to indicate that they are booting (for example, * if the firmware is on the disk of a external * harddisk). In that case we just fail, and the - * retry mechanism will try again later. */ + * retry mechanism will try again later. + */ if (i == 0 && rom[i] == 0) return -1; } - /* Now parse the config rom. The config rom is a recursive + /* + * Now parse the config rom. The config rom is a recursive * directory structure so we parse it using a stack of * references to the blocks that make up the structure. We * push a reference to the root directory on the stack to - * start things off. */ + * start things off. + */ length = i; sp = 0; stack[sp++] = 0xc0000005; while (sp > 0) { - /* Pop the next block reference of the stack. The + /* + * Pop the next block reference of the stack. The * lower 24 bits is the offset into the config rom, * the upper 8 bits are the type of the reference the - * block. */ + * block. + */ key = stack[--sp]; i = key & 0xffffff; if (i >= ARRAY_SIZE(rom)) - /* The reference points outside the standard - * config rom area, something's fishy. */ + /* + * The reference points outside the standard + * config rom area, something's fishy. + */ return -1; /* Read header quadlet for the block to get the length. */ @@ -457,15 +466,19 @@ static int read_bus_info_block(struct fw_device *device) end = i + (rom[i] >> 16) + 1; i++; if (end > ARRAY_SIZE(rom)) - /* This block extends outside standard config + /* + * This block extends outside standard config * area (and the array we're reading it * into). That's broken, so ignore this - * device. */ + * device. + */ return -1; - /* Now read in the block. If this is a directory + /* + * Now read in the block. If this is a directory * block, check the entries as we read them to see if - * it references another block, and push it in that case. */ + * it references another block, and push it in that case. + */ while (i < end) { if (read_rom(device, i, &rom[i]) != RCODE_COMPLETE) return -1; @@ -516,8 +529,10 @@ static void create_units(struct fw_device *device) if (key != (CSR_UNIT | CSR_DIRECTORY)) continue; - /* Get the address of the unit directory and try to - * match the drivers id_tables against it. */ + /* + * Get the address of the unit directory and try to + * match the drivers id_tables against it. + */ unit = kzalloc(sizeof *unit, GFP_KERNEL); if (unit == NULL) { fw_error("failed to allocate memory for unit\n"); @@ -585,14 +600,16 @@ static struct device_type fw_device_type = { .release = fw_device_release, }; -/* These defines control the retry behavior for reading the config +/* + * These defines control the retry behavior for reading the config * rom. It shouldn't be necessary to tweak these; if the device * doesn't respond to a config rom read within 10 seconds, it's not * going to respond at all. As for the initial delay, a lot of * devices will be able to respond within half a second after bus * reset. On the other hand, it's not really worth being more * aggressive than that, since it scales pretty well; if 10 devices - * are plugged in, they're all getting read within one second. */ + * are plugged in, they're all getting read within one second. + */ #define MAX_RETRIES 10 #define RETRY_DELAY (3 * HZ) @@ -604,9 +621,11 @@ static void fw_device_init(struct work_struct *work) container_of(work, struct fw_device, work.work); int minor, err; - /* All failure paths here set node->data to NULL, so that we + /* + * All failure paths here set node->data to NULL, so that we * don't try to do device_for_each_child() on a kfree()'d - * device. */ + * device. + */ if (read_bus_info_block(device) < 0) { if (device->config_rom_retries < MAX_RETRIES) { @@ -647,13 +666,15 @@ static void fw_device_init(struct work_struct *work) create_units(device); - /* Transition the device to running state. If it got pulled + /* + * Transition the device to running state. If it got pulled * out from under us while we did the intialization work, we * have to shut down the device again here. Normally, though, * fw_node_event will be responsible for shutting it down when * necessary. We have to use the atomic cmpxchg here to avoid * racing with the FW_NODE_DESTROYED case in - * fw_node_event(). */ + * fw_node_event(). + */ if (atomic_cmpxchg(&device->state, FW_DEVICE_INITIALIZING, FW_DEVICE_RUNNING) == FW_DEVICE_SHUTDOWN) @@ -662,10 +683,12 @@ static void fw_device_init(struct work_struct *work) fw_notify("created new fw device %s (%d config rom retries)\n", device->device.bus_id, device->config_rom_retries); - /* Reschedule the IRM work if we just finished reading the + /* + * Reschedule the IRM work if we just finished reading the * root node config rom. If this races with a bus reset we * just end up running the IRM work a couple of extra times - - * pretty harmless. */ + * pretty harmless. + */ if (device->node == device->card->root_node) schedule_delayed_work(&device->card->work, 0); @@ -716,12 +739,14 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event) if (device == NULL) break; - /* Do minimal intialization of the device here, the + /* + * Do minimal intialization of the device here, the * rest will happen in fw_device_init(). We need the * card and node so we can read the config rom and we * need to do device_initialize() now so * device_for_each_child() in FW_NODE_UPDATED is - * doesn't freak out. */ + * doesn't freak out. + */ device_initialize(&device->device); atomic_set(&device->state, FW_DEVICE_INITIALIZING); device->card = fw_card_get(card); @@ -730,15 +755,19 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event) device->generation = card->generation; INIT_LIST_HEAD(&device->client_list); - /* Set the node data to point back to this device so + /* + * Set the node data to point back to this device so * FW_NODE_UPDATED callbacks can update the node_id - * and generation for the device. */ + * and generation for the device. + */ node->data = device; - /* Many devices are slow to respond after bus resets, + /* + * Many devices are slow to respond after bus resets, * especially if they are bus powered and go through * power-up after getting plugged in. We schedule the - * first config rom scan half a second after bus reset. */ + * first config rom scan half a second after bus reset. + */ INIT_DELAYED_WORK(&device->work, fw_device_init); schedule_delayed_work(&device->work, INITIAL_DELAY); break; @@ -761,7 +790,8 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event) if (!node->data) break; - /* Destroy the device associated with the node. There + /* + * Destroy the device associated with the node. There * are two cases here: either the device is fully * initialized (FW_DEVICE_RUNNING) or we're in the * process of reading its config rom @@ -770,7 +800,8 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event) * full fw_device_shutdown(). If not, there's work * scheduled to read it's config rom, and we just put * the device in shutdown state to have that code fail - * to create the device. */ + * to create the device. + */ device = node->data; if (atomic_xchg(&device->state, FW_DEVICE_SHUTDOWN) == FW_DEVICE_RUNNING) { diff --git a/drivers/firewire/fw-device.h b/drivers/firewire/fw-device.h index c167d59da68..0ba9d64ccf4 100644 --- a/drivers/firewire/fw-device.h +++ b/drivers/firewire/fw-device.h @@ -1,7 +1,4 @@ -/* -*- c-basic-offset: 8 -*- - * - * fw-device.h - Device probing and sysfs code. - * +/* * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net> * * This program is free software; you can redistribute it and/or modify diff --git a/drivers/firewire/fw-iso.c b/drivers/firewire/fw-iso.c index 2ce26db656e..2b640e9be6d 100644 --- a/drivers/firewire/fw-iso.c +++ b/drivers/firewire/fw-iso.c @@ -1,6 +1,6 @@ -/* -*- c-basic-offset: 8 -*- +/* + * Isochronous IO functionality * - * fw-iso.c - Isochronous IO * Copyright (C) 2006 Kristian Hoegsberg <krh@bitplanet.net> * * This program is free software; you can redistribute it and/or modify diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c index 34eb4681e27..beb924403da 100644 --- a/drivers/firewire/fw-ohci.c +++ b/drivers/firewire/fw-ohci.c @@ -1,6 +1,6 @@ -/* -*- c-basic-offset: 8 -*- +/* + * Driver for OHCI 1394 controllers * - * fw-ohci.c - Driver for OHCI 1394 boards * Copyright (C) 2003-2006 Kristian Hoegsberg <krh@bitplanet.net> * * This program is free software; you can redistribute it and/or modify @@ -141,8 +141,10 @@ struct fw_ohci { int request_generation; u32 bus_seconds; - /* Spinlock for accessing fw_ohci data. Never call out of - * this driver with this lock held. */ + /* + * Spinlock for accessing fw_ohci data. Never call out of + * this driver with this lock held. + */ spinlock_t lock; u32 self_id_buffer[512]; @@ -328,13 +330,15 @@ static __le32 *handle_ar_packet(struct ar_context *ctx, __le32 *buffer) p.timestamp = status & 0xffff; p.generation = ohci->request_generation; - /* The OHCI bus reset handler synthesizes a phy packet with + /* + * The OHCI bus reset handler synthesizes a phy packet with * the new generation number when a bus reset happens (see * section 8.4.2.3). This helps us determine when a request * was received and make sure we send the response in the same * generation. We only need this for requests; for responses * we use the unique tlabel for finding the matching - * request. */ + * request. + */ if (p.ack + 16 == 0x09) ohci->request_generation = (buffer[2] >> 16) & 0xff; @@ -360,9 +364,11 @@ static void ar_context_tasklet(unsigned long data) if (d->res_count == 0) { size_t size, rest, offset; - /* This descriptor is finished and we may have a + /* + * This descriptor is finished and we may have a * packet split across this and the next buffer. We - * reuse the page for reassembling the split packet. */ + * reuse the page for reassembling the split packet. + */ offset = offsetof(struct ar_buffer, data); dma_unmap_single(ohci->card.device, @@ -473,11 +479,13 @@ context_init(struct context *ctx, struct fw_ohci *ohci, ctx->tail_descriptor = ctx->buffer; ctx->tail_descriptor_last = ctx->buffer; - /* We put a dummy descriptor in the buffer that has a NULL + /* + * We put a dummy descriptor in the buffer that has a NULL * branch address and looks like it's been sent. That way we * have a descriptor to append DMA programs to. Also, the * ring buffer invariant is that it always has at least one - * element so that head == tail means buffer full. */ + * element so that head == tail means buffer full. + */ memset(ctx->head_descriptor, 0, sizeof *ctx->head_descriptor); ctx->head_descriptor->control = cpu_to_le16(descriptor_output_last); @@ -575,9 +583,11 @@ struct driver_data { struct fw_packet *packet; }; -/* This function apppends a packet to the DMA queue for transmission. +/* + * This function apppends a packet to the DMA queue for transmission. * Must always be called with the ochi->lock held to ensure proper - * generation handling and locking around packet queue manipulation. */ + * generation handling and locking around packet queue manipulation. + */ static int at_context_queue_packet(struct context *ctx, struct fw_packet *packet) { @@ -598,10 +608,12 @@ at_context_queue_packet(struct context *ctx, struct fw_packet *packet) d[0].control = cpu_to_le16(descriptor_key_immediate); d[0].res_count = cpu_to_le16(packet->timestamp); - /* The DMA format for asyncronous link packets is different + /* + * The DMA format for asyncronous link packets is different * from the IEEE1394 layout, so shift the fields around * accordingly. If header_length is 8, it's a PHY packet, to - * which we need to prepend an extra quadlet. */ + * which we need to prepend an extra quadlet. + */ header = (__le32 *) &d[1]; if (packet->header_length > 8) { @@ -703,14 +715,18 @@ static int handle_at_packet(struct context *context, break; case OHCI1394_evt_flushed: - /* The packet was flushed should give same error as - * when we try to use a stale generation count. */ + /* + * The packet was flushed should give same error as + * when we try to use a stale generation count. + */ packet->ack = RCODE_GENERATION; break; case OHCI1394_evt_missing_ack: - /* Using a valid (current) generation count, but the - * node is not on the bus or not sending acks. */ + /* + * Using a valid (current) generation count, but the + * node is not on the bus or not sending acks. + */ packet->ack = RCODE_NO_ACK; break; @@ -887,10 +903,12 @@ static void bus_reset_tasklet(unsigned long data) } ohci->node_id = reg & 0xffff; - /* The count in the SelfIDCount register is the number of + /* + * The count in the SelfIDCount register is the number of * bytes in the self ID receive buffer. Since we also receive * the inverted quadlets and a header quadlet, we shift one - * bit extra to get the actual number of self IDs. */ + * bit extra to get the actual number of self IDs. + */ self_id_count = (reg_read(ohci, OHCI1394_SelfIDCount) >> 3) & 0x3ff; generation = (le32_to_cpu(ohci->self_id_cpu[0]) >> 16) & 0xff; @@ -901,7 +919,8 @@ static void bus_reset_tasklet(unsigned long data) ohci->self_id_buffer[j] = le32_to_cpu(ohci->self_id_cpu[i]); } - /* Check the consistency of the self IDs we just read. The + /* + * Check the consistency of the self IDs we just read. The * problem we face is that a new bus reset can start while we * read out the self IDs from the DMA buffer. If this happens, * the DMA buffer will be overwritten with new self IDs and we @@ -911,7 +930,8 @@ static void bus_reset_tasklet(unsigned long data) * self IDs in the buffer before reading them out and compare * it to the current generation after reading them out. If * the two generations match we know we have a consistent set - * of self IDs. */ + * of self IDs. + */ new_generation = (reg_read(ohci, OHCI1394_SelfIDCount) >> 16) & 0xff; if (new_generation != generation) { @@ -928,12 +948,14 @@ static void bus_reset_tasklet(unsigned long data) context_stop(&ohci->at_response_ctx); reg_write(ohci, OHCI1394_IntEventClear, OHCI1394_busReset); - /* This next bit is unrelated to the AT context stuff but we + /* + * This next bit is unrelated to the AT context stuff but we * have to do it under the spinlock also. If a new config rom * was set up before this reset, the old one is now no longer * in use and we can free it. Update the config rom pointers * to point to the current config rom and clear the - * next_config_rom pointer so a new udpate can take place. */ + * next_config_rom pointer so a new udpate can take place. + */ if (ohci->next_config_rom != NULL) { dma_free_coherent(ohci->card.device, CONFIG_ROM_SIZE, @@ -942,10 +964,12 @@ static void bus_reset_tasklet(unsigned long data) ohci->config_rom_bus = ohci->next_config_rom_bus; ohci->next_config_rom = NULL; - /* Restore config_rom image and manually update + /* + * Restore config_rom image and manually update * config_rom registers. Writing the header quadlet * will indicate that the config rom is ready, so we - * do that last. */ + * do that last. + */ reg_write(ohci, OHCI1394_BusOptions, be32_to_cpu(ohci->config_rom[2])); ohci->config_rom[0] = cpu_to_be32(ohci->next_header); @@ -1018,7 +1042,8 @@ static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length) struct fw_ohci *ohci = fw_ohci(card); struct pci_dev *dev = to_pci_dev(card->device); - /* When the link is not yet enabled, the atomic config rom + /* + * When the link is not yet enabled, the atomic config rom * update mechanism described below in ohci_set_config_rom() * is not active. We have to update ConfigRomHeader and * BusOptions manually, and the write to ConfigROMmap takes @@ -1067,8 +1092,10 @@ static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length) OHCI1394_HCControl_BIBimageValid); flush_writes(ohci); - /* We are ready to go, initiate bus reset to finish the - * initialization. */ + /* + * We are ready to go, initiate bus reset to finish the + * initialization. + */ fw_core_initiate_bus_reset(&ohci->card, 1); @@ -1086,7 +1113,8 @@ ohci_set_config_rom(struct fw_card *card, u32 *config_rom, size_t length) ohci = fw_ohci(card); - /* When the OHCI controller is enabled, the config rom update + /* + * When the OHCI controller is enabled, the config rom update * mechanism is a bit tricky, but easy enough to use. See * section 5.5.6 in the OHCI specification. * @@ -1141,11 +1169,13 @@ ohci_set_config_rom(struct fw_card *card, u32 *config_rom, size_t length) spin_unlock_irqrestore(&ohci->lock, flags); - /* Now initiate a bus reset to have the changes take + /* + * Now initiate a bus reset to have the changes take * effect. We clean up the old config rom memory and DMA * mappings in the bus reset tasklet, since the OHCI * controller could need to access it before the bus reset - * takes effect. */ + * takes effect. + */ if (retval == 0) fw_core_initiate_bus_reset(&ohci->card, 1); @@ -1196,8 +1226,10 @@ ohci_enable_phys_dma(struct fw_card *card, int node_id, int generation) unsigned long flags; int n, retval = 0; - /* FIXME: Make sure this bitmask is cleared when we clear the busReset - * interrupt bit. Clear physReqResourceAllBuses on bus reset. */ + /* + * FIXME: Make sure this bitmask is cleared when we clear the busReset + * interrupt bit. Clear physReqResourceAllBuses on bus reset. + */ spin_lock_irqsave(&ohci->lock, flags); @@ -1206,8 +1238,10 @@ ohci_enable_phys_dma(struct fw_card *card, int node_id, int generation) goto out; } - /* NOTE, if the node ID contains a non-local bus ID, physical DMA is - * enabled for _all_ nodes on remote buses. */ + /* + * Note, if the node ID contains a non-local bus ID, physical DMA is + * enabled for _all_ nodes on remote buses. + */ n = (node_id & 0xffc0) == LOCAL_BUS ? node_id & 0x3f : 63; if (n < 32) @@ -1257,11 +1291,13 @@ static int handle_ir_dualbuffer_packet(struct context *context, p = db + 1; end = p + header_length; while (p < end && i + ctx->base.header_size <= PAGE_SIZE) { - /* The iso header is byteswapped to little endian by + /* + * The iso header is byteswapped to little endian by * the controller, but the remaining header quadlets * are big endian. We want to present all the headers * as big endian, so we have to swap the first - * quadlet. */ + * quadlet. + */ *(u32 *) (ctx->header + i) = __swab32(*(u32 *) (p + 4)); memcpy(ctx->header + i + 4, p + 8, ctx->base.header_size - 4); i += ctx->base.header_size; @@ -1457,8 +1493,10 @@ ohci_queue_iso_transmit(struct fw_iso_context *base, u32 payload_index, payload_end_index, next_page_index; int page, end_page, i, length, offset; - /* FIXME: Cycle lost behavior should be configurable: lose - * packet, retransmit or terminate.. */ + /* + * FIXME: Cycle lost behavior should be configurable: lose + * packet, retransmit or terminate.. + */ p = packet; payload_index = payload; @@ -1553,8 +1591,10 @@ ohci_queue_iso_receive_dualbuffer(struct fw_iso_context *base, u32 z, header_z, length, rest; int page, offset, packet_count, header_size; - /* FIXME: Cycle lost behavior should be configurable: lose - * packet, retransmit or terminate.. */ + /* + * FIXME: Cycle lost behavior should be configurable: lose + * packet, retransmit or terminate.. + */ if (packet->skip) { d = context_get_descriptors(&ctx->context, 2, &d_bus); @@ -1572,8 +1612,10 @@ ohci_queue_iso_receive_dualbuffer(struct fw_iso_context *base, p = packet; z = 2; - /* The OHCI controller puts the status word in the header - * buffer too, so we need 4 extra bytes per packet. */ + /* + * The OHCI controller puts the status word in the header + * buff |