ASoC: Move active copy of CODEC read and write into runtime structure

We shouldn't be assigning to the driver structure (which really ought
to be const, further patch to follow) though there's unlikely to be any
actual problem except in the unlikely case that two devices with the
same driver but different bus types appear in the same system.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>

2 files changed, 6 insertions, 4 deletions

diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c
index 5143984..78b25e8 100644
--- a/sound/soc/soc-cache.c
+++ b/sound/soc/soc-cache.c
@@ -728,8 +728,8 @@ int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
 		return -EINVAL;
 	}
 
-	codec->driver->write = io_types[i].write;
-	codec->driver->read = io_types[i].read;
+	codec->write = io_types[i].write;
+	codec->read = io_types[i].read;
 
 	switch (control) {
 	case SND_SOC_CUSTOM:
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 20dcc97..5720dbc 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -2077,7 +2077,7 @@ unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
 {
 	unsigned int ret;
 
-	ret = codec->driver->read(codec, reg);
+	ret = codec->read(codec, reg);
 	dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
 	trace_snd_soc_reg_read(codec, reg, ret);
 
@@ -2090,7 +2090,7 @@ unsigned int snd_soc_write(struct snd_soc_codec *codec,
 {
 	dev_dbg(codec->dev, "write %x = %x\n", reg, val);
 	trace_snd_soc_reg_write(codec, reg, val);
-	return codec->driver->write(codec, reg, val);
+	return codec->write(codec, reg, val);
 }
 EXPORT_SYMBOL_GPL(snd_soc_write);
 
@@ -3448,6 +3448,8 @@ int snd_soc_register_codec(struct device *dev,
 
 	INIT_LIST_HEAD(&codec->dapm.widgets);
 	INIT_LIST_HEAD(&codec->dapm.paths);
+	codec->write = codec_drv->write;
+	codec->read = codec_drv->read;
 	codec->dapm.bias_level = SND_SOC_BIAS_OFF;
 	codec->dapm.dev = dev;
 	codec->dapm.codec = codec;