aboutsummaryrefslogtreecommitdiff
path: root/drivers/ieee1394/nodemgr.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/ieee1394/nodemgr.c')
-rw-r--r--drivers/ieee1394/nodemgr.c149
1 files changed, 106 insertions, 43 deletions
diff --git a/drivers/ieee1394/nodemgr.c b/drivers/ieee1394/nodemgr.c
index e829c9336b3..e95fe400e04 100644
--- a/drivers/ieee1394/nodemgr.c
+++ b/drivers/ieee1394/nodemgr.c
@@ -413,11 +413,14 @@ static ssize_t fw_get_destroy_node(struct bus_type *bus, char *buf)
static BUS_ATTR(destroy_node, S_IWUSR | S_IRUGO, fw_get_destroy_node, fw_set_destroy_node);
-static ssize_t fw_set_rescan(struct bus_type *bus, const char *buf, size_t count)
+static ssize_t fw_set_rescan(struct bus_type *bus, const char *buf,
+ size_t count)
{
+ int error = 0;
+
if (simple_strtoul(buf, NULL, 10) == 1)
- bus_rescan_devices(&ieee1394_bus_type);
- return count;
+ error = bus_rescan_devices(&ieee1394_bus_type);
+ return error ? error : count;
}
static ssize_t fw_get_rescan(struct bus_type *bus, char *buf)
{
@@ -583,7 +586,11 @@ static void nodemgr_create_drv_files(struct hpsb_protocol_driver *driver)
int i;
for (i = 0; i < ARRAY_SIZE(fw_drv_attrs); i++)
- driver_create_file(drv, fw_drv_attrs[i]);
+ if (driver_create_file(drv, fw_drv_attrs[i]))
+ goto fail;
+ return;
+fail:
+ HPSB_ERR("Failed to add sysfs attribute for driver %s", driver->name);
}
@@ -603,7 +610,12 @@ static void nodemgr_create_ne_dev_files(struct node_entry *ne)
int i;
for (i = 0; i < ARRAY_SIZE(fw_ne_attrs); i++)
- device_create_file(dev, fw_ne_attrs[i]);
+ if (device_create_file(dev, fw_ne_attrs[i]))
+ goto fail;
+ return;
+fail:
+ HPSB_ERR("Failed to add sysfs attribute for node %016Lx",
+ (unsigned long long)ne->guid);
}
@@ -613,11 +625,16 @@ static void nodemgr_create_host_dev_files(struct hpsb_host *host)
int i;
for (i = 0; i < ARRAY_SIZE(fw_host_attrs); i++)
- device_create_file(dev, fw_host_attrs[i]);
+ if (device_create_file(dev, fw_host_attrs[i]))
+ goto fail;
+ return;
+fail:
+ HPSB_ERR("Failed to add sysfs attribute for host %d", host->id);
}
-static struct node_entry *find_entry_by_nodeid(struct hpsb_host *host, nodeid_t nodeid);
+static struct node_entry *find_entry_by_nodeid(struct hpsb_host *host,
+ nodeid_t nodeid);
static void nodemgr_update_host_dev_links(struct hpsb_host *host)
{
@@ -628,12 +645,18 @@ static void nodemgr_update_host_dev_links(struct hpsb_host *host)
sysfs_remove_link(&dev->kobj, "busmgr_id");
sysfs_remove_link(&dev->kobj, "host_id");
- if ((ne = find_entry_by_nodeid(host, host->irm_id)))
- sysfs_create_link(&dev->kobj, &ne->device.kobj, "irm_id");
- if ((ne = find_entry_by_nodeid(host, host->busmgr_id)))
- sysfs_create_link(&dev->kobj, &ne->device.kobj, "busmgr_id");
- if ((ne = find_entry_by_nodeid(host, host->node_id)))
- sysfs_create_link(&dev->kobj, &ne->device.kobj, "host_id");
+ if ((ne = find_entry_by_nodeid(host, host->irm_id)) &&
+ sysfs_create_link(&dev->kobj, &ne->device.kobj, "irm_id"))
+ goto fail;
+ if ((ne = find_entry_by_nodeid(host, host->busmgr_id)) &&
+ sysfs_create_link(&dev->kobj, &ne->device.kobj, "busmgr_id"))
+ goto fail;
+ if ((ne = find_entry_by_nodeid(host, host->node_id)) &&
+ sysfs_create_link(&dev->kobj, &ne->device.kobj, "host_id"))
+ goto fail;
+ return;
+fail:
+ HPSB_ERR("Failed to update sysfs attributes for host %d", host->id);
}
static void nodemgr_create_ud_dev_files(struct unit_directory *ud)
@@ -642,25 +665,32 @@ static void nodemgr_create_ud_dev_files(struct unit_directory *ud)
int i;
for (i = 0; i < ARRAY_SIZE(fw_ud_attrs); i++)
- device_create_file(dev, fw_ud_attrs[i]);
-
+ if (device_create_file(dev, fw_ud_attrs[i]))
+ goto fail;
if (ud->flags & UNIT_DIRECTORY_SPECIFIER_ID)
- device_create_file(dev, &dev_attr_ud_specifier_id);
-
+ if (device_create_file(dev, &dev_attr_ud_specifier_id))
+ goto fail;
if (ud->flags & UNIT_DIRECTORY_VERSION)
- device_create_file(dev, &dev_attr_ud_version);
-
+ if (device_create_file(dev, &dev_attr_ud_version))
+ goto fail;
if (ud->flags & UNIT_DIRECTORY_VENDOR_ID) {
- device_create_file(dev, &dev_attr_ud_vendor_id);
- if (ud->vendor_name_kv)
- device_create_file(dev, &dev_attr_ud_vendor_name_kv);
+ if (device_create_file(dev, &dev_attr_ud_vendor_id))
+ goto fail;
+ if (ud->vendor_name_kv &&
+ device_create_file(dev, &dev_attr_ud_vendor_name_kv))
+ goto fail;
}
-
if (ud->flags & UNIT_DIRECTORY_MODEL_ID) {
- device_create_file(dev, &dev_attr_ud_model_id);
- if (ud->model_name_kv)
- device_create_file(dev, &dev_attr_ud_model_name_kv);
+ if (device_create_file(dev, &dev_attr_ud_model_id))
+ goto fail;
+ if (ud->model_name_kv &&
+ device_create_file(dev, &dev_attr_ud_model_name_kv))
+ goto fail;
}
+ return;
+fail:
+ HPSB_ERR("Failed to add sysfs attributes for unit %s",
+ ud->device.bus_id);
}
@@ -748,7 +778,7 @@ static int __nodemgr_remove_host_dev(struct device *dev, void *data)
static void nodemgr_remove_host_dev(struct device *dev)
{
- device_for_each_child(dev, NULL, __nodemgr_remove_host_dev);
+ WARN_ON(device_for_each_child(dev, NULL, __nodemgr_remove_host_dev));
sysfs_remove_link(&dev->kobj, "irm_id");
sysfs_remove_link(&dev->kobj, "busmgr_id");
sysfs_remove_link(&dev->kobj, "host_id");
@@ -792,7 +822,7 @@ static struct node_entry *nodemgr_create_node(octlet_t guid, struct csr1212_csr
ne = kzalloc(sizeof(*ne), GFP_KERNEL);
if (!ne)
- return NULL;
+ goto fail_alloc;
ne->host = host;
ne->nodeid = nodeid;
@@ -815,12 +845,15 @@ static struct node_entry *nodemgr_create_node(octlet_t guid, struct csr1212_csr
snprintf(ne->class_dev.class_id, BUS_ID_SIZE, "%016Lx",
(unsigned long long)(ne->guid));
- device_register(&ne->device);
- class_device_register(&ne->class_dev);
+ if (device_register(&ne->device))
+ goto fail_devreg;
+ if (class_device_register(&ne->class_dev))
+ goto fail_classdevreg;
get_device(&ne->device);
- if (ne->guid_vendor_oui)
- device_create_file(&ne->device, &dev_attr_ne_guid_vendor_oui);
+ if (ne->guid_vendor_oui &&
+ device_create_file(&ne->device, &dev_attr_ne_guid_vendor_oui))
+ goto fail_addoiu;
nodemgr_create_ne_dev_files(ne);
nodemgr_update_bus_options(ne);
@@ -830,6 +863,18 @@ static struct node_entry *nodemgr_create_node(octlet_t guid, struct csr1212_csr
NODE_BUS_ARGS(host, nodeid), (unsigned long long)guid);
return ne;
+
+fail_addoiu:
+ put_device(&ne->device);
+fail_classdevreg:
+ device_unregister(&ne->device);
+fail_devreg:
+ kfree(ne);
+fail_alloc:
+ HPSB_ERR("Failed to create node ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]",
+ NODE_BUS_ARGS(host, nodeid), (unsigned long long)guid);
+
+ return NULL;
}
@@ -891,13 +936,25 @@ static void nodemgr_register_device(struct node_entry *ne,
snprintf(ud->class_dev.class_id, BUS_ID_SIZE, "%s-%u",
ne->device.bus_id, ud->id);
- device_register(&ud->device);
- class_device_register(&ud->class_dev);
+ if (device_register(&ud->device))
+ goto fail_devreg;
+ if (class_device_register(&ud->class_dev))
+ goto fail_classdevreg;
get_device(&ud->device);
- if (ud->vendor_oui)
- device_create_file(&ud->device, &dev_attr_ud_vendor_oui);
+ if (ud->vendor_oui &&
+ device_create_file(&ud->device, &dev_attr_ud_vendor_oui))
+ goto fail_addoui;
nodemgr_create_ud_dev_files(ud);
+
+ return;
+
+fail_addoui:
+ put_device(&ud->device);
+fail_classdevreg:
+ device_unregister(&ud->device);
+fail_devreg:
+ HPSB_ERR("Failed to create unit %s", ud->device.bus_id);
}
@@ -1094,10 +1151,16 @@ static void nodemgr_process_root_directory(struct host_info *hi, struct node_ent
last_key_id = kv->key.id;
}
- if (ne->vendor_oui)
- device_create_file(&ne->device, &dev_attr_ne_vendor_oui);
- if (ne->vendor_name_kv)
- device_create_file(&ne->device, &dev_attr_ne_vendor_name_kv);
+ if (ne->vendor_oui &&
+ device_create_file(&ne->device, &dev_attr_ne_vendor_oui))
+ goto fail;
+ if (ne->vendor_name_kv &&
+ device_create_file(&ne->device, &dev_attr_ne_vendor_name_kv))
+ goto fail;
+ return;
+fail:
+ HPSB_ERR("Failed to add sysfs attribute for node %016Lx",
+ (unsigned long long)ne->guid);
}
#ifdef CONFIG_HOTPLUG
@@ -1170,7 +1233,7 @@ int hpsb_register_protocol(struct hpsb_protocol_driver *driver)
if (!ret)
nodemgr_create_drv_files(driver);
- return ret;
+ return 0;
}
void hpsb_unregister_protocol(struct hpsb_protocol_driver *driver)
@@ -1327,7 +1390,7 @@ static void nodemgr_suspend_ne(struct node_entry *ne)
NODE_BUS_ARGS(ne->host, ne->nodeid), (unsigned long long)ne->guid);
ne->in_limbo = 1;
- device_create_file(&ne->device, &dev_attr_ne_in_limbo);
+ WARN_ON(device_create_file(&ne->device, &dev_attr_ne_in_limbo));
down_write(&ne->device.bus->subsys.rwsem);
list_for_each_entry(cdev, &nodemgr_ud_class.children, node) {
@@ -1498,7 +1561,7 @@ static void nodemgr_node_probe(struct host_info *hi, int generation)
* just removed. */
if (generation == get_hpsb_generation(host))
- bus_rescan_devices(&ieee1394_bus_type);
+ WARN_ON(bus_rescan_devices(&ieee1394_bus_type));
return;
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-15 18:56:24 +0000