diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/mei/init.c | 21 | ||||
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 2 |
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index 4b1eb37344cb..abc5ea053bf7 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -303,7 +303,28 @@ void mei_stop(struct mei_device *dev) } EXPORT_SYMBOL_GPL(mei_stop); +/** + * mei_write_is_idle - check if the write queues are idle + * + * @dev: the device structure + * + * returns true of there is no pending write + */ +bool mei_write_is_idle(struct mei_device *dev) +{ + bool idle = (dev->dev_state == MEI_DEV_ENABLED && + list_empty(&dev->ctrl_wr_list.list) && + list_empty(&dev->write_list.list)); + dev_dbg(&dev->pdev->dev, "write pg: is idle[%d] state=%s ctrl=%d write=%d\n", + idle, + mei_dev_state_str(dev->dev_state), + list_empty(&dev->ctrl_wr_list.list), + list_empty(&dev->write_list.list)); + + return idle; +} +EXPORT_SYMBOL_GPL(mei_write_is_idle); void mei_device_init(struct mei_device *dev) { diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index bec6adef68bd..fe76e5b4cd2a 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -680,6 +680,8 @@ static inline int mei_count_full_read_slots(struct mei_device *dev) bool mei_hbuf_acquire(struct mei_device *dev); +bool mei_write_is_idle(struct mei_device *dev); + #if IS_ENABLED(CONFIG_DEBUG_FS) int mei_dbgfs_register(struct mei_device *dev, const char *name); void mei_dbgfs_deregister(struct mei_device *dev); |
