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authorDaniel Mack <daniel@caiaq.de>2010-03-22 10:11:15 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-04-05 19:14:11 +0100
commit5f712b2b73a9fc87fcc52124cfe8adefaa0c92f5 (patch)
tree0e7ab3cedba6b50cdf603c433b79ceebf23972b0 /sound/soc/s6000/s6000-pcm.c
parentd522ffbfb9fccf6eca283cd2e8b03cf3d21fb616 (diff)
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ALSA: 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. [Note that this is a backported version for 2.6.34. Upstream commit is fd23b7dee] Signed-off-by: Daniel Mack <daniel@caiaq.de> Reported-by: Sven Neumann <s.neumann@raumfeld.com> Reported-by: Michael Hirsch <m.hirsch@raumfeld.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/s6000/s6000-pcm.c')
-rw-r--r--sound/soc/s6000/s6000-pcm.c40
1 files changed, 29 insertions, 11 deletions
diff --git a/sound/soc/s6000/s6000-pcm.c b/sound/soc/s6000/s6000-pcm.c
index 1d61109e09f..9c7f7f00ceb 100644
--- a/sound/soc/s6000/s6000-pcm.c
+++ b/sound/soc/s6000/s6000-pcm.c
@@ -58,13 +58,15 @@ static void s6000_pcm_enqueue_dma(struct snd_pcm_substream *substream)
struct snd_pcm_runtime *runtime = substream->runtime;
struct s6000_runtime_data *prtd = runtime->private_data;
struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
- struct s6000_pcm_dma_params *par = soc_runtime->dai->cpu_dai->dma_data;
+ struct s6000_pcm_dma_params *par;
int channel;
unsigned int period_size;
unsigned int dma_offset;
dma_addr_t dma_pos;
dma_addr_t src, dst;
+ par = snd_soc_dai_get_dma_data(soc_runtime->dai->cpu_dai, substream);
+
period_size = snd_pcm_lib_period_bytes(substream);
dma_offset = prtd->period * period_size;
dma_pos = runtime->dma_addr + dma_offset;
@@ -101,7 +103,8 @@ static irqreturn_t s6000_pcm_irq(int irq, void *data)
{
struct snd_pcm *pcm = data;
struct snd_soc_pcm_runtime *runtime = pcm->private_data;
- struct s6000_pcm_dma_params *params = runtime->dai->cpu_dai->dma_data;
+ struct s6000_pcm_dma_params *params =
+ snd_soc_dai_get_dma_data(soc_runtime->dai->cpu_dai, substream);
struct s6000_runtime_data *prtd;
unsigned int has_xrun;
int i, ret = IRQ_NONE;
@@ -172,11 +175,13 @@ static int s6000_pcm_start(struct snd_pcm_substream *substream)
{
struct s6000_runtime_data *prtd = substream->runtime->private_data;
struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
- struct s6000_pcm_dma_params *par = soc_runtime->dai->cpu_dai->dma_data;
+ struct s6000_pcm_dma_params *par;
unsigned long flags;
int srcinc;
u32 dma;
+ par = snd_soc_dai_get_dma_data(soc_runtime->dai->cpu_dai, substream);
+
spin_lock_irqsave(&prtd->lock, flags);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
@@ -212,10 +217,12 @@ static int s6000_pcm_stop(struct snd_pcm_substream *substream)
{
struct s6000_runtime_data *prtd = substream->runtime->private_data;
struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
- struct s6000_pcm_dma_params *par = soc_runtime->dai->cpu_dai->dma_data;
+ struct s6000_pcm_dma_params *par;
unsigned long flags;
u32 channel;
+ par = snd_soc_dai_get_dma_data(soc_runtime->dai->cpu_dai, substream);
+
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
channel = par->dma_out;
else
@@ -236,9 +243,11 @@ static int s6000_pcm_stop(struct snd_pcm_substream *substream)
static int s6000_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
- struct s6000_pcm_dma_params *par = soc_runtime->dai->cpu_dai->dma_data;
+ struct s6000_pcm_dma_params *par;
int ret;
+ par = snd_soc_dai_get_dma_data(soc_runtime->dai->cpu_dai, substream);
+
ret = par->trigger(substream, cmd, 0);
if (ret < 0)
return ret;
@@ -275,13 +284,15 @@ static int s6000_pcm_prepare(struct snd_pcm_substream *substream)
static snd_pcm_uframes_t s6000_pcm_pointer(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
- struct s6000_pcm_dma_params *par = soc_runtime->dai->cpu_dai->dma_data;
+ struct s6000_pcm_dma_params *par;
struct snd_pcm_runtime *runtime = substream->runtime;
struct s6000_runtime_data *prtd = runtime->private_data;
unsigned long flags;
unsigned int offset;
dma_addr_t count;
+ par = snd_soc_dai_get_dma_data(soc_runtime->dai->cpu_dai, substream);
+
spin_lock_irqsave(&prtd->lock, flags);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
@@ -305,11 +316,12 @@ static snd_pcm_uframes_t s6000_pcm_pointer(struct snd_pcm_substream *substream)
static int s6000_pcm_open(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
- struct s6000_pcm_dma_params *par = soc_runtime->dai->cpu_dai->dma_data;
+ struct s6000_pcm_dma_params *par;
struct snd_pcm_runtime *runtime = substream->runtime;
struct s6000_runtime_data *prtd;
int ret;
+ par = snd_soc_dai_get_dma_data(soc_runtime->dai->cpu_dai, substream);
snd_soc_set_runtime_hwparams(substream, &s6000_pcm_hardware);
ret = snd_pcm_hw_constraint_step(runtime, 0,
@@ -364,7 +376,7 @@ static int s6000_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
- struct s6000_pcm_dma_params *par = soc_runtime->dai->cpu_dai->dma_data;
+ struct s6000_pcm_dma_params *par;
int ret;
ret = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
@@ -373,6 +385,8 @@ static int s6000_pcm_hw_params(struct snd_pcm_substream *substream,
return ret;
}
+ par = snd_soc_dai_get_dma_data(soc_runtime->dai->cpu_dai, substream);
+
if (par->same_rate) {
spin_lock(&par->lock);
if (par->rate == -1 ||
@@ -392,7 +406,8 @@ static int s6000_pcm_hw_params(struct snd_pcm_substream *substream,
static int s6000_pcm_hw_free(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
- struct s6000_pcm_dma_params *par = soc_runtime->dai->cpu_dai->dma_data;
+ struct s6000_pcm_dma_params *par =
+ snd_soc_dai_get_dma_data(soc_runtime->dai->cpu_dai, substream);
spin_lock(&par->lock);
par->in_use &= ~(1 << substream->stream);
@@ -417,7 +432,8 @@ static struct snd_pcm_ops s6000_pcm_ops = {
static void s6000_pcm_free(struct snd_pcm *pcm)
{
struct snd_soc_pcm_runtime *runtime = pcm->private_data;
- struct s6000_pcm_dma_params *params = runtime->dai->cpu_dai->dma_data;
+ struct s6000_pcm_dma_params *params =
+ snd_soc_dai_get_dma_data(soc_runtime->dai->cpu_dai, substream);
free_irq(params->irq, pcm);
snd_pcm_lib_preallocate_free_for_all(pcm);
@@ -429,9 +445,11 @@ static int s6000_pcm_new(struct snd_card *card,
struct snd_soc_dai *dai, struct snd_pcm *pcm)
{
struct snd_soc_pcm_runtime *runtime = pcm->private_data;
- struct s6000_pcm_dma_params *params = runtime->dai->cpu_dai->dma_data;
+ struct s6000_pcm_dma_params *params;
int res;
+ params = snd_soc_dai_get_dma_data(soc_runtime->dai->cpu_dai, substream);
+
if (!card->dev->dma_mask)
card->dev->dma_mask = &s6000_pcm_dmamask;
if (!card->dev->coherent_dma_mask)