4 files changed, 49 insertions, 15 deletions

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index 3e9b1c0bb1ce..058bc99c6c34 100644
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -933,6 +933,7 @@ static int soc_tplg_denum_create_texts(struct soc_enum *se,
                 }
         }
 
+        se->texts = (const char * const *)se->dobj.control.dtexts;
         return 0;
 
 err:
diff --git a/sound/soc/sti/uniperif.h b/sound/soc/sti/uniperif.h
index d487dd2ef016..cfcb0ea9d99d 100644
--- a/sound/soc/sti/uniperif.h
+++ b/sound/soc/sti/uniperif.h
@@ -1299,6 +1299,7 @@ struct uniperif {
         int ver; /* IP version, used by register access macros */
         struct regmap_field *clk_sel;
         struct regmap_field *valid_sel;
+        spinlock_t irq_lock; /* use to prevent race condition with IRQ */
 
         /* capabilities */
         const struct snd_pcm_hardware *hw;
diff --git a/sound/soc/sti/uniperif_player.c b/sound/soc/sti/uniperif_player.c
index 60ae31a303ab..d7e8dd46d2cc 100644
--- a/sound/soc/sti/uniperif_player.c
+++ b/sound/soc/sti/uniperif_player.c
@@ -65,10 +65,13 @@ static irqreturn_t uni_player_irq_handler(int irq, void *dev_id)
         unsigned int status;
         unsigned int tmp;
 
-        if (player->state == UNIPERIF_STATE_STOPPED) {
-                /* Unexpected IRQ: do nothing */
-                return IRQ_NONE;
-        }
+        spin_lock(&player->irq_lock);
+        if (!player->substream)
+                goto irq_spin_unlock;
+
+        snd_pcm_stream_lock(player->substream);
+        if (player->state == UNIPERIF_STATE_STOPPED)
+                goto stream_unlock;
 
         /* Get interrupt status & clear them immediately */
         status = GET_UNIPERIF_ITS(player);
@@ -88,9 +91,7 @@ static irqreturn_t uni_player_irq_handler(int irq, void *dev_id)
                         SET_UNIPERIF_ITM_BCLR_FIFO_ERROR(player);
 
                         /* Stop the player */
-                        snd_pcm_stream_lock(player->substream);
                         snd_pcm_stop(player->substream, SNDRV_PCM_STATE_XRUN);
-                        snd_pcm_stream_unlock(player->substream);
                 }
 
                 ret = IRQ_HANDLED;
@@ -104,9 +105,7 @@ static irqreturn_t uni_player_irq_handler(int irq, void *dev_id)
                 SET_UNIPERIF_ITM_BCLR_DMA_ERROR(player);
 
                 /* Stop the player */
-                snd_pcm_stream_lock(player->substream);
                 snd_pcm_stop(player->substream, SNDRV_PCM_STATE_XRUN);
-                snd_pcm_stream_unlock(player->substream);
 
                 ret = IRQ_HANDLED;
         }
@@ -116,7 +115,8 @@ static irqreturn_t uni_player_irq_handler(int irq, void *dev_id)
                 if (!player->underflow_enabled) {
                         dev_err(player->dev,
                                 "unexpected Underflow recovering\n");
-                        return -EPERM;
+                        ret = -EPERM;
+                        goto stream_unlock;
                 }
                 /* Read the underflow recovery duration */
                 tmp = GET_UNIPERIF_STATUS_1_UNDERFLOW_DURATION(player);
@@ -138,13 +138,16 @@ static irqreturn_t uni_player_irq_handler(int irq, void *dev_id)
                 dev_err(player->dev, "Underflow recovery failed\n");
 
                 /* Stop the player */
-                snd_pcm_stream_lock(player->substream);
                 snd_pcm_stop(player->substream, SNDRV_PCM_STATE_XRUN);
-                snd_pcm_stream_unlock(player->substream);
 
                 ret = IRQ_HANDLED;
         }
 
+stream_unlock:
+        snd_pcm_stream_unlock(player->substream);
+irq_spin_unlock:
+        spin_unlock(&player->irq_lock);
+
         return ret;
 }
 
@@ -588,6 +591,7 @@ static int uni_player_ctl_iec958_put(struct snd_kcontrol *kcontrol,
         struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
         struct uniperif *player = priv->dai_data.uni;
         struct snd_aes_iec958 *iec958 =  &player->stream_settings.iec958;
+        unsigned long flags;
 
         mutex_lock(&player->ctrl_lock);
         iec958->status[0] = ucontrol->value.iec958.status[0];
@@ -596,12 +600,14 @@ static int uni_player_ctl_iec958_put(struct snd_kcontrol *kcontrol,
         iec958->status[3] = ucontrol->value.iec958.status[3];
         mutex_unlock(&player->ctrl_lock);
 
+        spin_lock_irqsave(&player->irq_lock, flags);
         if (player->substream && player->substream->runtime)
                 uni_player_set_channel_status(player,
                                               player->substream->runtime);
         else
                 uni_player_set_channel_status(player, NULL);
 
+        spin_unlock_irqrestore(&player->irq_lock, flags);
         return 0;
 }
 
@@ -686,9 +692,12 @@ static int uni_player_startup(struct snd_pcm_substream *substream,
 {
         struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
         struct uniperif *player = priv->dai_data.uni;
+        unsigned long flags;
         int ret;
 
+        spin_lock_irqsave(&player->irq_lock, flags);
         player->substream = substream;
+        spin_unlock_irqrestore(&player->irq_lock, flags);
 
         player->clk_adj = 0;
 
@@ -986,12 +995,15 @@ static void uni_player_shutdown(struct snd_pcm_substream *substream,
 {
         struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
         struct uniperif *player = priv->dai_data.uni;
+        unsigned long flags;
 
+        spin_lock_irqsave(&player->irq_lock, flags);
         if (player->state != UNIPERIF_STATE_STOPPED)
                 /* Stop the player */
                 uni_player_stop(player);
 
         player->substream = NULL;
+        spin_unlock_irqrestore(&player->irq_lock, flags);
 }
 
 static int uni_player_parse_dt_audio_glue(struct platform_device *pdev,
@@ -1096,6 +1108,7 @@ int uni_player_init(struct platform_device *pdev,
         }
 
         mutex_init(&player->ctrl_lock);
+        spin_lock_init(&player->irq_lock);
 
         /* Ensure that disabled by default */
         SET_UNIPERIF_CONFIG_BACK_STALL_REQ_DISABLE(player);
diff --git a/sound/soc/sti/uniperif_reader.c b/sound/soc/sti/uniperif_reader.c
index 5992c6ab3833..ee0055e60852 100644
--- a/sound/soc/sti/uniperif_reader.c
+++ b/sound/soc/sti/uniperif_reader.c
@@ -46,10 +46,15 @@ static irqreturn_t uni_reader_irq_handler(int irq, void *dev_id)
         struct uniperif *reader = dev_id;
         unsigned int status;
 
+        spin_lock(&reader->irq_lock);
+        if (!reader->substream)
+                goto irq_spin_unlock;
+
+        snd_pcm_stream_lock(reader->substream);
         if (reader->state == UNIPERIF_STATE_STOPPED) {
                 /* Unexpected IRQ: do nothing */
                 dev_warn(reader->dev, "unexpected IRQ\n");
-                return IRQ_HANDLED;
+                goto stream_unlock;
         }
 
         /* Get interrupt status & clear them immediately */
@@ -60,13 +65,16 @@ static irqreturn_t uni_reader_irq_handler(int irq, void *dev_id)
         if (unlikely(status & UNIPERIF_ITS_FIFO_ERROR_MASK(reader))) {
                 dev_err(reader->dev, "FIFO error detected\n");
 
-                snd_pcm_stream_lock(reader->substream);
                 snd_pcm_stop(reader->substream, SNDRV_PCM_STATE_XRUN);
-                snd_pcm_stream_unlock(reader->substream);
 
-                return IRQ_HANDLED;
+                ret = IRQ_HANDLED;
         }
 
+stream_unlock:
+        snd_pcm_stream_unlock(reader->substream);
+irq_spin_unlock:
+        spin_unlock(&reader->irq_lock);
+
         return ret;
 }
 
@@ -347,8 +355,13 @@ static int uni_reader_startup(struct snd_pcm_substream *substream,
 {
         struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
         struct uniperif *reader = priv->dai_data.uni;
+        unsigned long flags;
         int ret;
 
+        spin_lock_irqsave(&reader->irq_lock, flags);
+        reader->substream = substream;
+        spin_unlock_irqrestore(&reader->irq_lock, flags);
+
         if (!UNIPERIF_TYPE_IS_TDM(reader))
                 return 0;
 
@@ -373,11 +386,15 @@ static void uni_reader_shutdown(struct snd_pcm_substream *substream,
 {
         struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
         struct uniperif *reader = priv->dai_data.uni;
+        unsigned long flags;
 
+        spin_lock_irqsave(&reader->irq_lock, flags);
         if (reader->state != UNIPERIF_STATE_STOPPED) {
                 /* Stop the reader */
                 uni_reader_stop(reader);
         }
+        reader->substream = NULL;
+        spin_unlock_irqrestore(&reader->irq_lock, flags);
 }
 
 static const struct snd_soc_dai_ops uni_reader_dai_ops = {
@@ -412,6 +429,8 @@ int uni_reader_init(struct platform_device *pdev,
                 return -EBUSY;
         }
 
+        spin_lock_init(&reader->irq_lock);
+
         return 0;
 }
 EXPORT_SYMBOL_GPL(uni_reader_init);