[PATCH] soundwire/ASoC: add leading zeroes in peripheral device name

[Bard Liao]

From: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>

We recently added leading zeroes in dev_dbg() messages but forgot to
do the same for the peripheral device name. Adding leading zeroes
makes it easier to read manufacturer ID and part ID, e.g.:

sdw:0:025d:0700:00
sdw:0:025d:0711:00
sdw:1:025d:0700:00
sdw:1:025d:1308:00
sdw:2:025d:0700:00
sdw:2:025d:0701:00
sdw:3:025d:0700:00
sdw:3:025d:0715:00

The use of '01x' for link_id and unique_id is intentional to show the
value range in the code, it's understood it does not actually change
the format.

To avoid problems with git bisect, the same change needs to be applied
to the Intel SoundWire machine driver, otherwise the components can't
be found and the card registration fails.

Tested-by: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Reviewed-by: Rander Wang <rander.wang at intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao at linux.intel.com>
---
 drivers/soundwire/slave.c        | 4 ++--
 sound/soc/intel/boards/sof_sdw.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/soundwire/slave.c b/drivers/soundwire/slave.c
index ff01b96c6e56..cc1e0fab5905 100644
--- a/drivers/soundwire/slave.c
+++ b/drivers/soundwire/slave.c
@@ -39,12 +39,12 @@ int sdw_slave_add(struct sdw_bus *bus,
 
 	if (id->unique_id == SDW_IGNORED_UNIQUE_ID) {
 		/* name shall be sdw:link:mfg:part:class */
-		dev_set_name(&slave->dev, "sdw:%x:%x:%x:%x",
+		dev_set_name(&slave->dev, "sdw:%01x:%04x:%04x:%02x",
 			     bus->link_id, id->mfg_id, id->part_id,
 			     id->class_id);
 	} else {
 		/* name shall be sdw:link:mfg:part:class:unique */
-		dev_set_name(&slave->dev, "sdw:%x:%x:%x:%x:%x",
+		dev_set_name(&slave->dev, "sdw:%01x:%04x:%04x:%02x:%01x",
 			     bus->link_id, id->mfg_id, id->part_id,
 			     id->class_id, id->unique_id);
 	}
diff --git a/sound/soc/intel/boards/sof_sdw.c b/sound/soc/intel/boards/sof_sdw.c
index ecd3f90f4bbe..8df1e69235cc 100644
--- a/sound/soc/intel/boards/sof_sdw.c
+++ b/sound/soc/intel/boards/sof_sdw.c
@@ -581,13 +581,13 @@ static int create_codec_dai_name(struct device *dev,
 		comp_index = i + offset;
 		if (is_unique_device(link, sdw_version, mfg_id, part_id,
 				     class_id, i)) {
-			codec_str = "sdw:%x:%x:%x:%x";
+			codec_str = "sdw:%01x:%04x:%04x:%02x";
 			codec[comp_index].name =
 				devm_kasprintf(dev, GFP_KERNEL, codec_str,
 					       link_id, mfg_id, part_id,
 					       class_id);
 		} else {
-			codec_str = "sdw:%x:%x:%x:%x:%x";
+			codec_str = "sdw:%01x:%04x:%04x:%02x:%01x";
 			codec[comp_index].name =
 				devm_kasprintf(dev, GFP_KERNEL, codec_str,
 					       link_id, mfg_id, part_id,
-- 
2.17.1