ASoC: move dma_data from snd_soc_dai to snd_soc_pcm_stream

This fixes a memory corruption when ASoC devices are used in
full-duplex mode. Specifically for pxa-ssp code, where this pointer
is dynamically allocated for each direction and destroyed upon each
stream start.

All other platforms are fixed blindly, I couldn't even compile-test
them. Sorry for any breakage I may have caused.

Reported-by: Sven Neumann <s.neumann@raumfeld.com>
Reported-by: Michael Hirsch <m.hirsch@raumfeld.com>
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

2 files changed, 4 insertions, 4 deletions

diff --git a/sound/soc/atmel/atmel-pcm.c b/sound/soc/atmel/atmel-pcm.c
index fdb255372127..f6b3cc04b34b 100644
--- a/sound/soc/atmel/atmel-pcm.c
+++ b/sound/soc/atmel/atmel-pcm.c
@@ -180,7 +180,7 @@ static int atmel_pcm_hw_params(struct snd_pcm_substream *substream,
         snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
         runtime->dma_bytes = params_buffer_bytes(params);
 
-        prtd->params = rtd->dai->cpu_dai->dma_data;
+        prtd->params = snd_soc_dai_get_dma_data(rtd->dai->cpu_dai, substream);
         prtd->params->dma_intr_handler = atmel_pcm_dma_irq;
 
         prtd->dma_buffer = runtime->dma_addr;
diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c
index e588e63f18d2..0b59806905d1 100644
--- a/sound/soc/atmel/atmel_ssc_dai.c
+++ b/sound/soc/atmel/atmel_ssc_dai.c
@@ -363,12 +363,12 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream,
         ssc_p->dma_params[dir] = dma_params;
 
         /*
-         * The cpu_dai->dma_data field is only used to communicate the
-         * appropriate DMA parameters to the pcm driver hw_params()
+         * The snd_soc_pcm_stream->dma_data field is only used to communicate
+         * the appropriate DMA parameters to the pcm driver hw_params()
          * function.  It should not be used for other purposes
          * as it is common to all substreams.
          */
-        rtd->dai->cpu_dai->dma_data = dma_params;
+        snd_soc_dai_set_dma_data(rtd->dai->cpu_dai, substream, dma_params);
 
         channels = params_channels(params);