diff options
Diffstat (limited to 'drivers/misc/mei/bus.c')
-rw-r--r-- | drivers/misc/mei/bus.c | 260 |
1 files changed, 130 insertions, 130 deletions
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c index 458aa5a09c52..18c37af22f07 100644 --- a/drivers/misc/mei/bus.c +++ b/drivers/misc/mei/bus.c @@ -32,22 +32,22 @@ static int mei_cl_device_match(struct device *dev, struct device_driver *drv) { - struct mei_cl_device *device = to_mei_cl_device(dev); - struct mei_cl_driver *driver = to_mei_cl_driver(drv); + struct mei_cl_device *cldev = to_mei_cl_device(dev); + struct mei_cl_driver *cldrv = to_mei_cl_driver(drv); const struct mei_cl_device_id *id; const uuid_le *uuid; const char *name; - if (!device) + if (!cldev) return 0; - uuid = mei_me_cl_uuid(device->me_cl); - name = device->name; + uuid = mei_me_cl_uuid(cldev->me_cl); + name = cldev->name; - if (!driver || !driver->id_table) + if (!cldrv || !cldrv->id_table) return 0; - id = driver->id_table; + id = cldrv->id_table; while (uuid_le_cmp(NULL_UUID_LE, id->uuid)) { @@ -68,54 +68,54 @@ static int mei_cl_device_match(struct device *dev, struct device_driver *drv) static int mei_cl_device_probe(struct device *dev) { - struct mei_cl_device *device = to_mei_cl_device(dev); - struct mei_cl_driver *driver; + struct mei_cl_device *cldev = to_mei_cl_device(dev); + struct mei_cl_driver *cldrv; struct mei_cl_device_id id; - if (!device) + if (!cldev) return 0; - driver = to_mei_cl_driver(dev->driver); - if (!driver || !driver->probe) + cldrv = to_mei_cl_driver(dev->driver); + if (!cldrv || !cldrv->probe) return -ENODEV; dev_dbg(dev, "Device probe\n"); - strlcpy(id.name, device->name, sizeof(id.name)); + strlcpy(id.name, cldev->name, sizeof(id.name)); - return driver->probe(device, &id); + return cldrv->probe(cldev, &id); } static int mei_cl_device_remove(struct device *dev) { - struct mei_cl_device *device = to_mei_cl_device(dev); - struct mei_cl_driver *driver; + struct mei_cl_device *cldev = to_mei_cl_device(dev); + struct mei_cl_driver *cldrv; - if (!device || !dev->driver) + if (!cldev || !dev->driver) return 0; - if (device->event_cb) { - device->event_cb = NULL; - cancel_work_sync(&device->event_work); + if (cldev->event_cb) { + cldev->event_cb = NULL; + cancel_work_sync(&cldev->event_work); } - driver = to_mei_cl_driver(dev->driver); - if (!driver->remove) { + cldrv = to_mei_cl_driver(dev->driver); + if (!cldrv->remove) { dev->driver = NULL; return 0; } - return driver->remove(device); + return cldrv->remove(cldev); } static ssize_t name_show(struct device *dev, struct device_attribute *a, char *buf) { - struct mei_cl_device *device = to_mei_cl_device(dev); + struct mei_cl_device *cldev = to_mei_cl_device(dev); size_t len; - len = snprintf(buf, PAGE_SIZE, "%s", device->name); + len = snprintf(buf, PAGE_SIZE, "%s", cldev->name); return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len; } @@ -124,8 +124,8 @@ static DEVICE_ATTR_RO(name); static ssize_t uuid_show(struct device *dev, struct device_attribute *a, char *buf) { - struct mei_cl_device *device = to_mei_cl_device(dev); - const uuid_le *uuid = mei_me_cl_uuid(device->me_cl); + struct mei_cl_device *cldev = to_mei_cl_device(dev); + const uuid_le *uuid = mei_me_cl_uuid(cldev->me_cl); size_t len; len = snprintf(buf, PAGE_SIZE, "%pUl", uuid); @@ -137,12 +137,12 @@ static DEVICE_ATTR_RO(uuid); static ssize_t modalias_show(struct device *dev, struct device_attribute *a, char *buf) { - struct mei_cl_device *device = to_mei_cl_device(dev); - const uuid_le *uuid = mei_me_cl_uuid(device->me_cl); + struct mei_cl_device *cldev = to_mei_cl_device(dev); + const uuid_le *uuid = mei_me_cl_uuid(cldev->me_cl); size_t len; len = snprintf(buf, PAGE_SIZE, "mei:%s:" MEI_CL_UUID_FMT ":", - device->name, MEI_CL_UUID_ARGS(uuid->b)); + cldev->name, MEI_CL_UUID_ARGS(uuid->b)); return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len; } @@ -158,17 +158,17 @@ ATTRIBUTE_GROUPS(mei_cl_dev); static int mei_cl_uevent(struct device *dev, struct kobj_uevent_env *env) { - struct mei_cl_device *device = to_mei_cl_device(dev); - const uuid_le *uuid = mei_me_cl_uuid(device->me_cl); + struct mei_cl_device *cldev = to_mei_cl_device(dev); + const uuid_le *uuid = mei_me_cl_uuid(cldev->me_cl); if (add_uevent_var(env, "MEI_CL_UUID=%pUl", uuid)) return -ENOMEM; - if (add_uevent_var(env, "MEI_CL_NAME=%s", device->name)) + if (add_uevent_var(env, "MEI_CL_NAME=%s", cldev->name)) return -ENOMEM; if (add_uevent_var(env, "MODALIAS=mei:%s:" MEI_CL_UUID_FMT ":", - device->name, MEI_CL_UUID_ARGS(uuid->b))) + cldev->name, MEI_CL_UUID_ARGS(uuid->b))) return -ENOMEM; return 0; @@ -185,121 +185,121 @@ static struct bus_type mei_cl_bus_type = { static void mei_cl_dev_release(struct device *dev) { - struct mei_cl_device *device = to_mei_cl_device(dev); + struct mei_cl_device *cldev = to_mei_cl_device(dev); - if (!device) + if (!cldev) return; - mei_me_cl_put(device->me_cl); - kfree(device); + mei_me_cl_put(cldev->me_cl); + kfree(cldev); } static struct device_type mei_cl_device_type = { .release = mei_cl_dev_release, }; -struct mei_cl *mei_cl_bus_find_cl_by_uuid(struct mei_device *dev, +struct mei_cl *mei_cl_bus_find_cl_by_uuid(struct mei_device *bus, uuid_le uuid) { struct mei_cl *cl; - list_for_each_entry(cl, &dev->device_list, device_link) { - if (cl->device && cl->device->me_cl && - !uuid_le_cmp(uuid, *mei_me_cl_uuid(cl->device->me_cl))) + list_for_each_entry(cl, &bus->device_list, device_link) { + if (cl->cldev && cl->cldev->me_cl && + !uuid_le_cmp(uuid, *mei_me_cl_uuid(cl->cldev->me_cl))) return cl; } return NULL; } -struct mei_cl_device *mei_cl_add_device(struct mei_device *dev, +struct mei_cl_device *mei_cl_add_device(struct mei_device *bus, struct mei_me_client *me_cl, struct mei_cl *cl, char *name) { - struct mei_cl_device *device; + struct mei_cl_device *cldev; int status; - device = kzalloc(sizeof(struct mei_cl_device), GFP_KERNEL); - if (!device) + cldev = kzalloc(sizeof(struct mei_cl_device), GFP_KERNEL); + if (!cldev) return NULL; - device->me_cl = mei_me_cl_get(me_cl); - if (!device->me_cl) { - kfree(device); + cldev->me_cl = mei_me_cl_get(me_cl); + if (!cldev->me_cl) { + kfree(cldev); return NULL; } - device->cl = cl; - device->dev.parent = dev->dev; - device->dev.bus = &mei_cl_bus_type; - device->dev.type = &mei_cl_device_type; + cldev->cl = cl; + cldev->dev.parent = bus->dev; + cldev->dev.bus = &mei_cl_bus_type; + cldev->dev.type = &mei_cl_device_type; - strlcpy(device->name, name, sizeof(device->name)); + strlcpy(cldev->name, name, sizeof(cldev->name)); - dev_set_name(&device->dev, "mei:%s:%pUl", name, mei_me_cl_uuid(me_cl)); + dev_set_name(&cldev->dev, "mei:%s:%pUl", name, mei_me_cl_uuid(me_cl)); - status = device_register(&device->dev); + status = device_register(&cldev->dev); if (status) { - dev_err(dev->dev, "Failed to register MEI device\n"); - mei_me_cl_put(device->me_cl); - kfree(device); + dev_err(bus->dev, "Failed to register MEI device\n"); + mei_me_cl_put(cldev->me_cl); + kfree(cldev); return NULL; } - cl->device = device; + cl->cldev = cldev; - dev_dbg(&device->dev, "client %s registered\n", name); + dev_dbg(&cldev->dev, "client %s registered\n", name); - return device; + return cldev; } EXPORT_SYMBOL_GPL(mei_cl_add_device); -void mei_cl_remove_device(struct mei_cl_device *device) +void mei_cl_remove_device(struct mei_cl_device *cldev) { - device_unregister(&device->dev); + device_unregister(&cldev->dev); } EXPORT_SYMBOL_GPL(mei_cl_remove_device); -int __mei_cl_driver_register(struct mei_cl_driver *driver, struct module *owner) +int __mei_cl_driver_register(struct mei_cl_driver *cldrv, struct module *owner) { int err; - driver->driver.name = driver->name; - driver->driver.owner = owner; - driver->driver.bus = &mei_cl_bus_type; + cldrv->driver.name = cldrv->name; + cldrv->driver.owner = owner; + cldrv->driver.bus = &mei_cl_bus_type; - err = driver_register(&driver->driver); + err = driver_register(&cldrv->driver); if (err) return err; - pr_debug("mei: driver [%s] registered\n", driver->driver.name); + pr_debug("mei: driver [%s] registered\n", cldrv->driver.name); return 0; } EXPORT_SYMBOL_GPL(__mei_cl_driver_register); -void mei_cl_driver_unregister(struct mei_cl_driver *driver) +void mei_cl_driver_unregister(struct mei_cl_driver *cldrv) { - driver_unregister(&driver->driver); + driver_unregister(&cldrv->driver); - pr_debug("mei: driver [%s] unregistered\n", driver->driver.name); + pr_debug("mei: driver [%s] unregistered\n", cldrv->driver.name); } EXPORT_SYMBOL_GPL(mei_cl_driver_unregister); ssize_t __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length, bool blocking) { - struct mei_device *dev; + struct mei_device *bus; struct mei_cl_cb *cb = NULL; ssize_t rets; if (WARN_ON(!cl || !cl->dev)) return -ENODEV; - dev = cl->dev; + bus = cl->dev; - mutex_lock(&dev->device_lock); + mutex_lock(&bus->device_lock); if (!mei_cl_is_connected(cl)) { rets = -ENODEV; goto out; @@ -327,7 +327,7 @@ ssize_t __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length, rets = mei_cl_write(cl, cb, blocking); out: - mutex_unlock(&dev->device_lock); + mutex_unlock(&bus->device_lock); if (rets < 0) mei_io_cb_free(cb); @@ -336,7 +336,7 @@ out: ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length) { - struct mei_device *dev; + struct mei_device *bus; struct mei_cl_cb *cb; size_t r_length; ssize_t rets; @@ -344,9 +344,9 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length) if (WARN_ON(!cl || !cl->dev)) return -ENODEV; - dev = cl->dev; + bus = cl->dev; - mutex_lock(&dev->device_lock); + mutex_lock(&bus->device_lock); cb = mei_cl_read_cb(cl, NULL); if (cb) @@ -358,7 +358,7 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length) if (list_empty(&cl->rd_completed) && !waitqueue_active(&cl->rx_wait)) { - mutex_unlock(&dev->device_lock); + mutex_unlock(&bus->device_lock); if (wait_event_interruptible(cl->rx_wait, (!list_empty(&cl->rd_completed)) || @@ -369,7 +369,7 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length) return -ERESTARTSYS; } - mutex_lock(&dev->device_lock); + mutex_lock(&bus->device_lock); if (!mei_cl_is_connected(cl)) { rets = -EBUSY; @@ -396,14 +396,14 @@ copy: free: mei_io_cb_free(cb); out: - mutex_unlock(&dev->device_lock); + mutex_unlock(&bus->device_lock); return rets; } -ssize_t mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length) +ssize_t mei_cl_send(struct mei_cl_device *cldev, u8 *buf, size_t length) { - struct mei_cl *cl = device->cl; + struct mei_cl *cl = cldev->cl; if (cl == NULL) return -ENODEV; @@ -412,9 +412,9 @@ ssize_t mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length) } EXPORT_SYMBOL_GPL(mei_cl_send); -ssize_t mei_cl_recv(struct mei_cl_device *device, u8 *buf, size_t length) +ssize_t mei_cl_recv(struct mei_cl_device *cldev, u8 *buf, size_t length) { - struct mei_cl *cl = device->cl; + struct mei_cl *cl = cldev->cl; if (cl == NULL) return -ENODEV; @@ -425,108 +425,108 @@ EXPORT_SYMBOL_GPL(mei_cl_recv); static void mei_bus_event_work(struct work_struct *work) { - struct mei_cl_device *device; + struct mei_cl_device *cldev; - device = container_of(work, struct mei_cl_device, event_work); + cldev = container_of(work, struct mei_cl_device, event_work); - if (device->event_cb) - device->event_cb(device, device->events, device->event_context); + if (cldev->event_cb) + cldev->event_cb(cldev, cldev->events, cldev->event_context); - device->events = 0; + cldev->events = 0; /* Prepare for the next read */ - mei_cl_read_start(device->cl, 0, NULL); + mei_cl_read_start(cldev->cl, 0, NULL); } -int mei_cl_register_event_cb(struct mei_cl_device *device, +int mei_cl_register_event_cb(struct mei_cl_device *cldev, mei_cl_event_cb_t event_cb, void *context) { - if (device->event_cb) + if (cldev->event_cb) return -EALREADY; - device->events = 0; - device->event_cb = event_cb; - device->event_context = context; - INIT_WORK(&device->event_work, mei_bus_event_work); + cldev->events = 0; + cldev->event_cb = event_cb; + cldev->event_context = context; + INIT_WORK(&cldev->event_work, mei_bus_event_work); - mei_cl_read_start(device->cl, 0, NULL); + mei_cl_read_start(cldev->cl, 0, NULL); return 0; } EXPORT_SYMBOL_GPL(mei_cl_register_event_cb); -void *mei_cl_get_drvdata(const struct mei_cl_device *device) +void *mei_cl_get_drvdata(const struct mei_cl_device *cldev) { - return dev_get_drvdata(&device->dev); + return dev_get_drvdata(&cldev->dev); } EXPORT_SYMBOL_GPL(mei_cl_get_drvdata); -void mei_cl_set_drvdata(struct mei_cl_device *device, void *data) +void mei_cl_set_drvdata(struct mei_cl_device *cldev, void *data) { - dev_set_drvdata(&device->dev, data); + dev_set_drvdata(&cldev->dev, data); } EXPORT_SYMBOL_GPL(mei_cl_set_drvdata); -int mei_cl_enable_device(struct mei_cl_device *device) +int mei_cl_enable_device(struct mei_cl_device *cldev) { int err; - struct mei_device *dev; - struct mei_cl *cl = device->cl; + struct mei_device *bus; + struct mei_cl *cl = cldev->cl; if (cl == NULL) return -ENODEV; - dev = cl->dev; + bus = cl->dev; - mutex_lock(&dev->device_lock); + mutex_lock(&bus->device_lock); if (mei_cl_is_connected(cl)) { - mutex_unlock(&dev->device_lock); - dev_warn(dev->dev, "Already connected"); + mutex_unlock(&bus->device_lock); + dev_warn(bus->dev, "Already connected"); return -EBUSY; } - err = mei_cl_connect(cl, device->me_cl, NULL); + err = mei_cl_connect(cl, cldev->me_cl, NULL); if (err < 0) { - mutex_unlock(&dev->device_lock); - dev_err(dev->dev, "Could not connect to the ME client"); + mutex_unlock(&bus->device_lock); + dev_err(bus->dev, "Could not connect to the ME client"); return err; } - mutex_unlock(&dev->device_lock); + mutex_unlock(&bus->device_lock); - if (device->event_cb) - mei_cl_read_start(device->cl, 0, NULL); + if (cldev->event_cb) + mei_cl_read_start(cldev->cl, 0, NULL); return 0; } EXPORT_SYMBOL_GPL(mei_cl_enable_device); -int mei_cl_disable_device(struct mei_cl_device *device) +int mei_cl_disable_device(struct mei_cl_device *cldev) { int err; - struct mei_device *dev; - struct mei_cl *cl = device->cl; + struct mei_device *bus; + struct mei_cl *cl = cldev->cl; if (cl == NULL) return -ENODEV; - dev = cl->dev; + bus = cl->dev; - device->event_cb = NULL; + cldev->event_cb = NULL; - mutex_lock(&dev->device_lock); + mutex_lock(&bus->device_lock); if (!mei_cl_is_connected(cl)) { - dev_err(dev->dev, "Already disconnected"); + dev_err(bus->dev, "Already disconnected"); err = 0; goto out; } err = mei_cl_disconnect(cl); if (err < 0) { - dev_err(dev->dev, "Could not disconnect from the ME client"); + dev_err(bus->dev, "Could not disconnect from the ME client"); goto out; } @@ -534,7 +534,7 @@ int mei_cl_disable_device(struct mei_cl_device *device) mei_cl_flush_queues(cl, NULL); out: - mutex_unlock(&dev->device_lock); + mutex_unlock(&bus->device_lock); return err; } @@ -542,14 +542,14 @@ EXPORT_SYMBOL_GPL(mei_cl_disable_device); void mei_cl_bus_rx_event(struct mei_cl *cl) { - struct mei_cl_device *device = cl->device; + struct mei_cl_device *cldev = cl->cldev; - if (!device || !device->event_cb) + if (!cldev || !cldev->event_cb) return; - set_bit(MEI_CL_EVENT_RX, &device->events); + set_bit(MEI_CL_EVENT_RX, &cldev->events); - schedule_work(&device->event_work); + schedule_work(&cldev->event_work); } int __init mei_cl_bus_init(void) |