diff options
| -rw-r--r-- | drivers/soundwire/bus.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c index 1cc858b4107d..6e569a875a9b 100644 --- a/drivers/soundwire/bus.c +++ b/drivers/soundwire/bus.c @@ -774,6 +774,16 @@ static int sdw_program_device_num(struct sdw_bus *bus) found = true; /* + * To prevent skipping state-machine stages don't + * program a device until we've seen it UNATTACH. + * Must return here because no other device on #0 + * can be detected until this one has been + * assigned a device ID. + */ + if (slave->status != SDW_SLAVE_UNATTACHED) + return 0; + + /* * Assign a new dev_num to this Slave and * not mark it present. It will be marked * present after it reports ATTACHED on new |