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Commit bf7efaef authored by Meng Wang's avatar Meng Wang
Browse files

ASoC: msm: qdsp6v2: check if buf is null before using it 



buf returned from q6asm_shared_io_buf could be null and
it could cause crash. Check if buf is null before using
it to avoid crash.

CRs-Fixed: 1046606
Change-Id: Ia988b11ff7d03edc4ddd959571da1378da62077c
Signed-off-by: default avatarMeng Wang <mwang@codeaurora.org>
parent 64a109dc

sound/soc/msm/qdsp6v2/msm-pcm-q6-noirq.c

+5 −0
Original line number Diff line number Diff line
@@ -375,6 +375,11 @@ static int msm_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 
		q6asm_cmd(prtd->audio_client, CMD_PAUSE);

		q6asm_cmd(prtd->audio_client, CMD_FLUSH);

		buf = q6asm_shared_io_buf(prtd->audio_client, dir);

		if (buf == NULL) {

			pr_err("%s: shared IO buffer is null\n", __func__);

			ret = -EINVAL;

			break;

		}

		memset(buf->data, 0, buf->actual_size);

		break;

	case SNDRV_PCM_TRIGGER_SUSPEND: