[PATCH 04/17] soundwire: bus: improve dynamic debug comments for enumeration

[Pierre-Louis Bossart]

update comments to provide better understanding of enumeration flows.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.boss...@linux.intel.com>
---
 drivers/soundwire/bus.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
index 89d5f1537d9b..40f7d0dc59a6 100644
--- a/drivers/soundwire/bus.c
+++ b/drivers/soundwire/bus.c
@@ -476,7 +476,8 @@ static int sdw_assign_device_num(struct sdw_slave *slave)
 
        ret = sdw_write(slave, SDW_SCP_DEVNUMBER, dev_num);
        if (ret < 0) {
-               dev_err(&slave->dev, "Program device_num failed: %d\n", ret);
+               dev_err(&slave->dev, "Program device_num %d failed: %d\n",
+                       dev_num, ret);
                return ret;
        }
 
@@ -533,6 +534,7 @@ static int sdw_program_device_num(struct sdw_bus *bus)
        do {
                ret = sdw_transfer(bus, &msg);
                if (ret == -ENODATA) { /* end of device id reads */
+                       dev_dbg(bus->dev, "No more devices to enumerate\n");
                        ret = 0;
                        break;
                }
@@ -975,6 +977,7 @@ int sdw_handle_slave_status(struct sdw_bus *bus,
        int i, ret = 0;
 
        if (status[0] == SDW_SLAVE_ATTACHED) {
+               dev_dbg(bus->dev, "Slave attached, programming device 
number\n");
                ret = sdw_program_device_num(bus);
                if (ret)
                        dev_err(bus->dev, "Slave attach failed: %d\n", ret);
-- 
2.20.1