From f5f76ea75dce553631ffb08abc44dcecb68e74d4 Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Mon, 11 Jan 2016 15:17:23 +0000 Subject: ASoC: qcom: use correct device pointer in dma allocation dev pointer in struct snd_soc_pcm_runtime does not have dma_ops set. In v4.4 kernel dma_ops would end up pointing to dummy_dma_ops in such cases. So attempting to use such device in allocating coherent memory on aarch64 would fail. According to commit 1dccb598df549d892b6450c261da54cdd7af44b4 ("arm64: simplify dma_get_ops") The current behavior of dma_get_ops is to fall back to the global dma_ops when a device has not set its own dma_ops, but only for DT based systems. So, this patch fixes the driver to use correct device pointer while allocating coherent memory, and also deletes un-necessary dma_mask setup on soc_runtime->dev. Without this patch lpass driver would fail with below log: ... [ 6.541542] ADV7533: lpass_platform_alloc_buffer: Could not allocate DMA buffer [ 6.541914] apq8016-lpass-cpu 7708000.lpass-cpu: ASoC: pcm constructor failed: -12 [ 6.548216] qcom-apq8016-sbc 7702000.sound: ASoC: can't create pcm ADV7533 :-12 [ 6.555581] qcom-apq8016-sbc 7702000.sound: ASoC: failed to instantiate card -12 [ 6.566072] qcom-apq8016-sbc: probe of 7702000.sound failed with error -12 ... Signed-off-by: Srinivas Kandagatla Signed-off-by: Mark Brown --- sound/soc/qcom/lpass-platform.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/sound/soc/qcom/lpass-platform.c b/sound/soc/qcom/lpass-platform.c index 79688aa1941a..4aeb8e1a7160 100644 --- a/sound/soc/qcom/lpass-platform.c +++ b/sound/soc/qcom/lpass-platform.c @@ -440,18 +440,18 @@ static irqreturn_t lpass_platform_lpaif_irq(int irq, void *data) } static int lpass_platform_alloc_buffer(struct snd_pcm_substream *substream, - struct snd_soc_pcm_runtime *soc_runtime) + struct snd_soc_pcm_runtime *rt) { struct snd_dma_buffer *buf = &substream->dma_buffer; size_t size = lpass_platform_pcm_hardware.buffer_bytes_max; buf->dev.type = SNDRV_DMA_TYPE_DEV; - buf->dev.dev = soc_runtime->dev; + buf->dev.dev = rt->platform->dev; buf->private_data = NULL; - buf->area = dma_alloc_coherent(soc_runtime->dev, size, &buf->addr, + buf->area = dma_alloc_coherent(rt->platform->dev, size, &buf->addr, GFP_KERNEL); if (!buf->area) { - dev_err(soc_runtime->dev, "%s: Could not allocate DMA buffer\n", + dev_err(rt->platform->dev, "%s: Could not allocate DMA buffer\n", __func__); return -ENOMEM; } @@ -461,12 +461,12 @@ static int lpass_platform_alloc_buffer(struct snd_pcm_substream *substream, } static void lpass_platform_free_buffer(struct snd_pcm_substream *substream, - struct snd_soc_pcm_runtime *soc_runtime) + struct snd_soc_pcm_runtime *rt) { struct snd_dma_buffer *buf = &substream->dma_buffer; if (buf->area) { - dma_free_coherent(soc_runtime->dev, buf->bytes, buf->area, + dma_free_coherent(rt->dev, buf->bytes, buf->area, buf->addr); } buf->area = NULL; @@ -499,9 +499,6 @@ static int lpass_platform_pcm_new(struct snd_soc_pcm_runtime *soc_runtime) snd_soc_pcm_set_drvdata(soc_runtime, data); - soc_runtime->dev->coherent_dma_mask = DMA_BIT_MASK(32); - soc_runtime->dev->dma_mask = &soc_runtime->dev->coherent_dma_mask; - ret = lpass_platform_alloc_buffer(substream, soc_runtime); if (ret) return ret; -- cgit