ASoC: amd: acp3x: use dma_ops of parent device for acp3x dma driver

AMD platform device acp3x_rv_i2s created by parent PCI device
driver. Pass struct device of the parent to
snd_pcm_lib_preallocate_pages() so dma_alloc_coherent() can use
correct dma_ops. Otherwise, it will use default dma_ops which
is nommu_dma_ops on x86_64 even when IOMMU is enabled and
set to non passthrough mode.

Signed-off-by: Vijendar Mukunda <vijendar.mukunda@amd.com>
Link: https://lore.kernel.org/r/1564753899-17124-1-git-send-email-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/amd/raven/acp3x-pcm-dma.c b/sound/soc/amd/raven/acp3x-pcm-dma.c
index a4ade6bb5bebea57f499f3d113eff5eec14ada1d..905ed2f1861b002135beed3895ab144b1236b657 100644 (file)
--- a/sound/soc/amd/raven/acp3x-pcm-dma.c
+++ b/sound/soc/amd/raven/acp3x-pcm-dma.c
@@ -385,9 +385,11 @@ static snd_pcm_uframes_t acp3x_dma_pointer(struct snd_pcm_substream *substream)
 
 static int acp3x_dma_new(struct snd_soc_pcm_runtime *rtd)
 {
+       struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd,
+                                                                   DRV_NAME);
+       struct device *parent = component->dev->parent;
        snd_pcm_lib_preallocate_pages_for_all(rtd->pcm, SNDRV_DMA_TYPE_DEV,
-                                             rtd->pcm->card->dev,
-                                             MIN_BUFFER, MAX_BUFFER);
+                                             parent, MIN_BUFFER, MAX_BUFFER);
        return 0;
 }