This helper is useful to make sure that the resume stages wait for the device to be fully initialized, not just enumerated.
Depending on how initialization is handled, a Slave device driver may wait for enumeration_complete, or for initialization_complete, both are valid synchronization points.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- include/linux/soundwire/sdw.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h index 2c6688eb4c09..6d667224ae8f 100644 --- a/include/linux/soundwire/sdw.h +++ b/include/linux/soundwire/sdw.h @@ -552,6 +552,8 @@ struct sdw_slave_ops { * @enumeration_complete: completion utility to control potential races * on startup between device enumeration and read/write access to the * Slave device + * @initialization_complete: completion utility to control potential races + * on startup between device enumeration and settings being restored */ struct sdw_slave { struct sdw_slave_id id; @@ -569,6 +571,7 @@ struct sdw_slave { bool probed; struct completion probe_complete; struct completion enumeration_complete; + struct completion initialization_complete; };
#define dev_to_sdw_dev(_dev) container_of(_dev, struct sdw_slave, dev)