Commit 6572a281 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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:
  ieee1394: dv1394: fix possible deadlock in multithreaded clients
  ieee1394: raw1394: fix possible deadlock in multithreaded clients
  ieee1394: struct device - replace bus_id with dev_name(), dev_set_name()
  firewire: struct device - replace bus_id with dev_name(), dev_set_name()
parents e252f4db 8449fc3a
......@@ -587,8 +587,7 @@ static void create_units(struct fw_device *device)
unit->device.bus = &fw_bus_type;
unit->device.type = &fw_unit_type;
unit->device.parent = &device->device;
snprintf(unit->device.bus_id, sizeof(unit->device.bus_id),
"%s.%d", device->device.bus_id, i++);
dev_set_name(&unit->device, "%s.%d", dev_name(&device->device), i++);
init_fw_attribute_group(&unit->device,
fw_unit_attributes,
......@@ -711,8 +710,7 @@ static void fw_device_init(struct work_struct *work)
device->device.type = &fw_device_type;
device->device.parent = device->card->device;
device->device.devt = MKDEV(fw_cdev_major, minor);
snprintf(device->device.bus_id, sizeof(device->device.bus_id),
"fw%d", minor);
dev_set_name(&device->device, "fw%d", minor);
init_fw_attribute_group(&device->device,
fw_device_attributes,
......@@ -741,13 +739,13 @@ static void fw_device_init(struct work_struct *work)
if (device->config_rom_retries)
fw_notify("created device %s: GUID %08x%08x, S%d00, "
"%d config ROM retries\n",
device->device.bus_id,
dev_name(&device->device),
device->config_rom[3], device->config_rom[4],
1 << device->max_speed,
device->config_rom_retries);
else
fw_notify("created device %s: GUID %08x%08x, S%d00\n",
device->device.bus_id,
dev_name(&device->device),
device->config_rom[3], device->config_rom[4],
1 << device->max_speed);
device->config_rom_retries = 0;
......@@ -883,12 +881,12 @@ static void fw_device_refresh(struct work_struct *work)
FW_DEVICE_RUNNING) == FW_DEVICE_SHUTDOWN)
goto gone;
fw_notify("refreshed device %s\n", device->device.bus_id);
fw_notify("refreshed device %s\n", dev_name(&device->device));
device->config_rom_retries = 0;
goto out;
give_up:
fw_notify("giving up on refresh of device %s\n", device->device.bus_id);
fw_notify("giving up on refresh of device %s\n", dev_name(&device->device));
gone:
atomic_set(&device->state, FW_DEVICE_SHUTDOWN);
fw_device_shutdown(work);
......
......@@ -2468,7 +2468,7 @@ pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
goto fail_self_id;
fw_notify("Added fw-ohci device %s, OHCI version %x.%x\n",
dev->dev.bus_id, version >> 16, version & 0xff);
dev_name(&dev->dev), version >> 16, version & 0xff);
return 0;
fail_self_id:
......
......@@ -1135,7 +1135,7 @@ static int sbp2_probe(struct device *dev)
tgt->unit = unit;
kref_init(&tgt->kref);
INIT_LIST_HEAD(&tgt->lu_list);
tgt->bus_id = unit->device.bus_id;
tgt->bus_id = dev_name(&unit->device);
tgt->guid = (u64)device->config_rom[3] << 32 | device->config_rom[4];
if (fw_device_enable_phys_dma(device) < 0)
......
......@@ -1270,8 +1270,14 @@ static int dv1394_mmap(struct file *file, struct vm_area_struct *vma)
struct video_card *video = file_to_video_card(file);
int retval = -EINVAL;
/* serialize mmap */
mutex_lock(&video->mtx);
/*
* We cannot use the blocking variant mutex_lock here because .mmap
* is called with mmap_sem held, while .ioctl, .read, .write acquire
* video->mtx and subsequently call copy_to/from_user which will
* grab mmap_sem in case of a page fault.
*/
if (!mutex_trylock(&video->mtx))
return -EAGAIN;
if ( ! video_card_initialized(video) ) {
retval = do_dv1394_init_default(video);
......
......@@ -155,11 +155,11 @@ struct hpsb_host *hpsb_alloc_host(struct hpsb_host_driver *drv, size_t extra,
memcpy(&h->device, &nodemgr_dev_template_host, sizeof(h->device));
h->device.parent = dev;
set_dev_node(&h->device, dev_to_node(dev));
snprintf(h->device.bus_id, BUS_ID_SIZE, "fw-host%d", h->id);
dev_set_name(&h->device, "fw-host%d", h->id);
h->host_dev.parent = &h->device;
h->host_dev.class = &hpsb_host_class;
snprintf(h->host_dev.bus_id, BUS_ID_SIZE, "fw-host%d", h->id);
dev_set_name(&h->host_dev, "fw-host%d", h->id);
if (device_register(&h->device))
goto fail;
......
......@@ -826,13 +826,11 @@ static struct node_entry *nodemgr_create_node(octlet_t guid,
memcpy(&ne->device, &nodemgr_dev_template_ne,
sizeof(ne->device));
ne->device.parent = &host->device;
snprintf(ne->device.bus_id, BUS_ID_SIZE, "%016Lx",
(unsigned long long)(ne->guid));
dev_set_name(&ne->device, "%016Lx", (unsigned long long)(ne->guid));
ne->node_dev.parent = &ne->device;
ne->node_dev.class = &nodemgr_ne_class;
snprintf(ne->node_dev.bus_id, BUS_ID_SIZE, "%016Lx",
(unsigned long long)(ne->guid));
dev_set_name(&ne->node_dev, "%016Lx", (unsigned long long)(ne->guid));
if (device_register(&ne->device))
goto fail_devreg;
......@@ -932,13 +930,11 @@ static void nodemgr_register_device(struct node_entry *ne,
ud->device.parent = parent;
snprintf(ud->device.bus_id, BUS_ID_SIZE, "%s-%u",
ne->device.bus_id, ud->id);
dev_set_name(&ud->device, "%s-%u", dev_name(&ne->device), ud->id);
ud->unit_dev.parent = &ud->device;
ud->unit_dev.class = &nodemgr_ud_class;
snprintf(ud->unit_dev.bus_id, BUS_ID_SIZE, "%s-%u",
ne->device.bus_id, ud->id);
dev_set_name(&ud->unit_dev, "%s-%u", dev_name(&ne->device), ud->id);
if (device_register(&ud->device))
goto fail_devreg;
......@@ -953,7 +949,7 @@ static void nodemgr_register_device(struct node_entry *ne,
fail_classdevreg:
device_unregister(&ud->device);
fail_devreg:
HPSB_ERR("Failed to create unit %s", ud->device.bus_id);
HPSB_ERR("Failed to create unit %s", dev_name(&ud->device));
}
......
......@@ -2268,7 +2268,8 @@ static ssize_t raw1394_write(struct file *file, const char __user * buffer,
return -EFAULT;
}
mutex_lock(&fi->state_mutex);
if (!mutex_trylock(&fi->state_mutex))
return -EAGAIN;
switch (fi->state) {
case opened:
......@@ -2548,7 +2549,8 @@ static int raw1394_mmap(struct file *file, struct vm_area_struct *vma)
struct file_info *fi = file->private_data;
int ret;
mutex_lock(&fi->state_mutex);
if (!mutex_trylock(&fi->state_mutex))
return -EAGAIN;
if (fi->iso_state == RAW1394_ISO_INACTIVE)
ret = -EINVAL;
......@@ -2669,7 +2671,8 @@ static long raw1394_ioctl(struct file *file, unsigned int cmd,
break;
}
mutex_lock(&fi->state_mutex);
if (!mutex_trylock(&fi->state_mutex))
return -EAGAIN;
switch (fi->iso_state) {
case RAW1394_ISO_INACTIVE:
......
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