diff options
Diffstat (limited to 'drivers/ieee1394/nodemgr.c')
| -rw-r--r-- | drivers/ieee1394/nodemgr.c | 61 |
1 files changed, 40 insertions, 21 deletions
diff --git a/drivers/ieee1394/nodemgr.c b/drivers/ieee1394/nodemgr.c index dbeba45a031..6a1a0572275 100644 --- a/drivers/ieee1394/nodemgr.c +++ b/drivers/ieee1394/nodemgr.c @@ -16,6 +16,7 @@ #include <linux/kthread.h> #include <linux/module.h> #include <linux/moduleparam.h> +#include <linux/mutex.h> #include <linux/freezer.h> #include <asm/atomic.h> @@ -115,7 +116,7 @@ static int nodemgr_bus_read(struct csr1212_csr *csr, u64 addr, u16 length, static int nodemgr_get_max_rom(quadlet_t *bus_info_data, void *__ci) { - return (CSR1212_BE32_TO_CPU(bus_info_data[2]) >> 8) & 0x3; + return (be32_to_cpu(bus_info_data[2]) >> 8) & 0x3; } static struct csr1212_bus_ops nodemgr_csr_ops = { @@ -580,7 +581,7 @@ static void nodemgr_create_drv_files(struct hpsb_protocol_driver *driver) goto fail; return; fail: - HPSB_ERR("Failed to add sysfs attribute for driver %s", driver->name); + HPSB_ERR("Failed to add sysfs attribute"); } @@ -604,8 +605,7 @@ static void nodemgr_create_ne_dev_files(struct node_entry *ne) goto fail; return; fail: - HPSB_ERR("Failed to add sysfs attribute for node %016Lx", - (unsigned long long)ne->guid); + HPSB_ERR("Failed to add sysfs attribute"); } @@ -619,7 +619,7 @@ static void nodemgr_create_host_dev_files(struct hpsb_host *host) goto fail; return; fail: - HPSB_ERR("Failed to add sysfs attribute for host %d", host->id); + HPSB_ERR("Failed to add sysfs attribute"); } @@ -679,8 +679,7 @@ static void nodemgr_create_ud_dev_files(struct unit_directory *ud) } return; fail: - HPSB_ERR("Failed to add sysfs attributes for unit %s", - ud->device.bus_id); + HPSB_ERR("Failed to add sysfs attribute"); } @@ -1144,13 +1143,13 @@ static void nodemgr_process_root_directory(struct host_info *hi, struct node_ent last_key_id = kv->key.id; } - 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); + if (ne->vendor_name_kv) { + int error = device_create_file(&ne->device, + &dev_attr_ne_vendor_name_kv); + + if (error && error != -EEXIST) + HPSB_ERR("Failed to add sysfs attribute"); + } } #ifdef CONFIG_HOTPLUG @@ -1738,7 +1737,19 @@ exit: return 0; } -int nodemgr_for_each_host(void *__data, int (*cb)(struct hpsb_host *, void *)) +/** + * nodemgr_for_each_host - call a function for each IEEE 1394 host + * @data: an address to supply to the callback + * @cb: function to call for each host + * + * Iterate the hosts, calling a given function with supplied data for each host. + * If the callback fails on a host, i.e. if it returns a non-zero value, the + * iteration is stopped. + * + * Return value: 0 on success, non-zero on failure (same as returned by last run + * of the callback). + */ +int nodemgr_for_each_host(void *data, int (*cb)(struct hpsb_host *, void *)) { struct class_device *cdev; struct hpsb_host *host; @@ -1748,7 +1759,7 @@ int nodemgr_for_each_host(void *__data, int (*cb)(struct hpsb_host *, void *)) list_for_each_entry(cdev, &hpsb_host_class.children, node) { host = container_of(cdev, struct hpsb_host, class_dev); - if ((error = cb(host, __data))) + if ((error = cb(host, data))) break; } up(&hpsb_host_class.sem); @@ -1756,7 +1767,7 @@ int nodemgr_for_each_host(void *__data, int (*cb)(struct hpsb_host *, void *)) return error; } -/* The following four convenience functions use a struct node_entry +/* The following two convenience functions use a struct node_entry * for addressing a node on the bus. They are intended for use by any * process context, not just the nodemgr thread, so we need to be a * little careful when reading out the node ID and generation. The @@ -1771,12 +1782,20 @@ int nodemgr_for_each_host(void *__data, int (*cb)(struct hpsb_host *, void *)) * ID's. */ -void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *pkt) +/** + * hpsb_node_fill_packet - fill some destination information into a packet + * @ne: destination node + * @packet: packet to fill in + * + * This will fill in the given, pre-initialised hpsb_packet with the current + * information from the node entry (host, node ID, bus generation number). + */ +void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *packet) { - pkt->host = ne->host; - pkt->generation = ne->generation; + packet->host = ne->host; + packet->generation = ne->generation; barrier(); - pkt->node_id = ne->nodeid; + packet->node_id = ne->nodeid; } int hpsb_node_write(struct node_entry *ne, u64 addr, |