static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev, struct class_interface *class_intf) { struct pcmcia_socket *socket = class_get_devdata(class_dev); int ret; socket = pcmcia_get_socket(socket); if (!socket) { printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket); return -ENODEV; } /* * Ugly. But we want to wait for the socket threads to have started up. * We really should let the drivers themselves drive some of this.. */ msleep(250); #ifdef CONFIG_PCMCIA_IOCTL init_waitqueue_head(&socket->queue); #endif INIT_LIST_HEAD(&socket->devices_list); INIT_WORK(&socket->device_add, pcmcia_delayed_add_pseudo_device, socket); memset(&socket->pcmcia_state, 0, sizeof(u8)); socket->device_count = 0; ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback); if (ret) { printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket); pcmcia_put_socket(socket); return (ret); } return 0; }
static void pcmcia_release_dev(struct device *dev) { struct pcmcia_device *p_dev = to_pcmcia_dev(dev); ds_dbg(1, "releasing dev %p\n", p_dev); pcmcia_put_socket(p_dev->socket); kfree(p_dev->devname); kfree(p_dev); }
static void pcmcia_bus_remove_socket(struct class_device *class_dev, struct class_interface *class_intf) { struct pcmcia_socket *socket = class_get_devdata(class_dev); if (!socket) return; socket->pcmcia_state.dead = 1; pccard_register_pcmcia(socket, NULL); pcmcia_put_socket(socket); return; }
static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) { struct pcmcia_socket *s = pcmcia_get_socket(skt); ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n", event, priority, skt); switch (event) { case CS_EVENT_CARD_REMOVAL: s->pcmcia_state.present = 0; pcmcia_card_remove(skt); handle_event(skt, event); break; case CS_EVENT_CARD_INSERTION: s->pcmcia_state.present = 1; pcmcia_card_add(skt); handle_event(skt, event); break; case CS_EVENT_EJECTION_REQUEST: break; case CS_EVENT_PM_SUSPEND: case CS_EVENT_PM_RESUME: case CS_EVENT_RESET_PHYSICAL: case CS_EVENT_CARD_RESET: default: handle_event(skt, event); break; } pcmcia_put_socket(s); return 0; } /* ds_event */
struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function) { struct pcmcia_device *p_dev; unsigned long flags; int bus_id_len; s = pcmcia_get_socket(s); if (!s) return NULL; down(&device_add_lock); /* max of 2 devices per card */ if (s->device_count == 2) goto err_put; p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL); if (!p_dev) goto err_put; p_dev->socket = s; p_dev->device_no = (s->device_count++); p_dev->func = function; p_dev->dev.bus = &pcmcia_bus_type; p_dev->dev.parent = s->dev.dev; p_dev->dev.release = pcmcia_release_dev; bus_id_len = sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no); p_dev->devname = kmalloc(6 + bus_id_len + 1, GFP_KERNEL); if (!p_dev->devname) goto err_free; sprintf (p_dev->devname, "pcmcia%s", p_dev->dev.bus_id); /* compat */ p_dev->state = CLIENT_UNBOUND; /* Add to the list in pcmcia_bus_socket */ spin_lock_irqsave(&pcmcia_dev_list_lock, flags); list_add_tail(&p_dev->socket_device_list, &s->devices_list); spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); printk(KERN_NOTICE "pcmcia: registering new device %s\n", p_dev->devname); pcmcia_device_query(p_dev); if (device_register(&p_dev->dev)) { spin_lock_irqsave(&pcmcia_dev_list_lock, flags); list_del(&p_dev->socket_device_list); spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); goto err_free; } up(&device_add_lock); return p_dev; err_free: kfree(p_dev->devname); kfree(p_dev); s->device_count--; err_put: up(&device_add_lock); pcmcia_put_socket(s); return NULL; }
static void pcmcia_release_bus_socket(struct kref *refcount) { struct pcmcia_bus_socket *s = container_of(refcount, struct pcmcia_bus_socket, refcount); pcmcia_put_socket(s->parent); kfree(s); }