Merge tag 'soundwire-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire

Pull soundwire updates from Vinod Koul:

 - Constify sdw_bus and sdw_master_type objects

 - use of rtd helper for better code

 - intel aux device remove redundant assignment

* tag 'soundwire-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
  soundwire: Use snd_soc_substream_to_rtd() to obtain rtd
  soundwire: constify the struct device_type usage
  soundwire: bus_type: make sdw_bus_type const
  soundwire: intel_auxdevice: remove redundant assignment to variable link_flags
  soundwire: stream: add missing const to Documentation

Documentation/driver-api/soundwire/stream.rst

@@ -324,12 +324,12 @@ framework, this stream state is linked to .hw_params() operation.
 
   int sdw_stream_add_master(struct sdw_bus * bus,
 		struct sdw_stream_config * stream_config,
-		struct sdw_ports_config * ports_config,
+		const struct sdw_ports_config * ports_config,
 		struct sdw_stream_runtime * stream);
 
   int sdw_stream_add_slave(struct sdw_slave * slave,
 		struct sdw_stream_config * stream_config,
-		struct sdw_ports_config * ports_config,
+		const struct sdw_ports_config * ports_config,
 		struct sdw_stream_runtime * stream);
 
 

drivers/soundwire/bus_type.c

@@ -72,7 +72,7 @@ int sdw_slave_uevent(const struct device *dev, struct kobj_uevent_env *env)
 	return 0;
 }
 
-struct bus_type sdw_bus_type = {
+const struct bus_type sdw_bus_type = {
 	.name = "soundwire",
 	.match = sdw_bus_match,
 };

drivers/soundwire/intel_auxdevice.c

@@ -621,8 +621,6 @@ static int __maybe_unused intel_resume(struct device *dev)
 		return 0;
 	}
 
-	link_flags = md_flags >> (bus->link_id * 8);
-
 	if (pm_runtime_suspended(dev)) {
 		dev_dbg(dev, "pm_runtime status was suspended, forcing active\n");
 

drivers/soundwire/master.c

@@ -112,7 +112,7 @@ static const struct dev_pm_ops master_dev_pm = {
 			   pm_generic_runtime_resume, NULL)
 };
 
-struct device_type sdw_master_type = {
+const struct device_type sdw_master_type = {
 	.name =		"soundwire_master",
 	.release =	sdw_master_device_release,
 	.pm = &master_dev_pm,

drivers/soundwire/slave.c

@@ -16,7 +16,7 @@ static void sdw_slave_release(struct device *dev)
 	kfree(slave);
 }
 
-struct device_type sdw_slave_type = {
+const struct device_type sdw_slave_type = {
 	.name =		"sdw_slave",
 	.release =	sdw_slave_release,
 	.uevent =	sdw_slave_uevent,

drivers/soundwire/stream.c

@@ -1718,7 +1718,7 @@ EXPORT_SYMBOL(sdw_deprepare_stream);
 static int set_stream(struct snd_pcm_substream *substream,
 		      struct sdw_stream_runtime *sdw_stream)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_soc_dai *dai;
 	int ret = 0;
 	int i;
@@ -1771,7 +1771,7 @@ EXPORT_SYMBOL(sdw_alloc_stream);
 int sdw_startup_stream(void *sdw_substream)
 {
 	struct snd_pcm_substream *substream = sdw_substream;
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct sdw_stream_runtime *sdw_stream;
 	char *name;
 	int ret;
@@ -1815,7 +1815,7 @@ EXPORT_SYMBOL(sdw_startup_stream);
 void sdw_shutdown_stream(void *sdw_substream)
 {
 	struct snd_pcm_substream *substream = sdw_substream;
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct sdw_stream_runtime *sdw_stream;
 	struct snd_soc_dai *dai;
 

include/linux/soundwire/sdw_type.h

@@ -4,9 +4,9 @@
 #ifndef __SOUNDWIRE_TYPES_H
 #define __SOUNDWIRE_TYPES_H
 
-extern struct bus_type sdw_bus_type;
-extern struct device_type sdw_slave_type;
-extern struct device_type sdw_master_type;
+extern const struct bus_type sdw_bus_type;
+extern const struct device_type sdw_slave_type;
+extern const struct device_type sdw_master_type;
 
 static inline int is_sdw_slave(const struct device *dev)
 {