From 6e56e5d04191aa20e08430dcb203c081fa247e93 Mon Sep 17 00:00:00 2001 From: "Agrawal, Akshu" Date: Thu, 7 Jun 2018 14:48:43 +0800 Subject: [PATCH] ASoC: AMD: Add NULL pointer check Fix crash in those platforms whose machine driver does not expose platform_info. For those platforms we rely on default value and select I2SSP channel. Signed-off-by: Akshu Agrawal Signed-off-by: Mark Brown --- sound/soc/amd/acp-pcm-dma.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c index 77203841c535..1458b5048498 100644 --- a/sound/soc/amd/acp-pcm-dma.c +++ b/sound/soc/amd/acp-pcm-dma.c @@ -773,7 +773,8 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream, if (WARN_ON(!rtd)) return -EINVAL; - rtd->i2s_instance = pinfo->i2s_instance; + if (pinfo) + rtd->i2s_instance = pinfo->i2s_instance; if (adata->asic_type == CHIP_STONEY) { val = acp_reg_read(adata->acp_mmio, mmACP_I2S_16BIT_RESOLUTION_EN);