This patch add simple check before sending data buffer to dsp which will
ensure that we are not sending any buffers which are not already available.

Signed-off-by: Srinivas Kandagatla <[email protected]>
---
 sound/soc/qcom/qdsp6/q6asm-dai.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/sound/soc/qcom/qdsp6/q6asm-dai.c b/sound/soc/qcom/qdsp6/q6asm-dai.c
index 892411f81613..7aba3c07810b 100644
--- a/sound/soc/qcom/qdsp6/q6asm-dai.c
+++ b/sound/soc/qcom/qdsp6/q6asm-dai.c
@@ -534,13 +534,12 @@ static void compress_event_handler(uint32_t opcode, 
uint32_t token,
                prtd->copied_total += bytes_written;
                snd_compr_fragment_elapsed(substream);
 
-               if (prtd->state != Q6ASM_STREAM_RUNNING) {
+               avail = prtd->bytes_received - prtd->bytes_sent;
+               if (prtd->state != Q6ASM_STREAM_RUNNING || avail <= 0) {
                        spin_unlock_irqrestore(&prtd->lock, flags);
                        break;
                }
 
-               avail = prtd->bytes_received - prtd->bytes_sent;
-
                if (avail >= prtd->pcm_count) {
                        q6asm_write_async(prtd->audio_client, prtd->stream_id,
                                           prtd->pcm_count, 0, 0, 0);
-- 
2.21.0

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