samsung-sm8650/android_kernel_samsung_sm8650-modules
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dsp: remove ION_FLAG_CACHED for DMA buf heap

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ION_FLAG_CACHED is no longer supported for DMA
buf heap. Remove cache maintenance as it can be
counter productive for CMA memory.

Change-Id: I13c58a4304269c6140fbca891cf718ab6a0eb2fe
Signed-off-by: Vikram Panduranga <vpandura@codeaurora.org>
This commit is contained in:
Vikram Panduranga
2021-07-06 09:25:56 -07:00
parent f9c72af547
commit 1873045b4d
1 changed files with 0 additions and 12 deletions
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12
dsp/msm_audio_ion.c
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@@ -142,7 +142,6 @@ static int msm_audio_dma_buf_map(struct dma_buf *dma_buf,
{ {
struct msm_audio_alloc_data *alloc_data = NULL; struct msm_audio_alloc_data *alloc_data = NULL;
unsigned long ionflag = 0;
int rc = 0; int rc = 0;
void *vaddr = NULL; void *vaddr = NULL;
struct device *cb_dev = ion_data->cb_dev; struct device *cb_dev = ion_data->cb_dev;
@@ -167,17 +166,6 @@ static int msm_audio_dma_buf_map(struct dma_buf *dma_buf,
goto free_alloc_data; goto free_alloc_data;
} }
/* For uncached buffers, avoid cache maintanance */
rc = dma_buf_get_flags(alloc_data->dma_buf, &ionflag);
if (rc) {
dev_err(cb_dev, "%s: dma_buf_get_flags failed: %d\n",
__func__, rc);
goto detach_dma_buf;
}
if (!(ionflag & ION_FLAG_CACHED))
alloc_data->attach->dma_map_attrs |= DMA_ATTR_SKIP_CPU_SYNC;
/* /*
* Get the scatter-gather list. * Get the scatter-gather list.
* There is no info as this is a write buffer or * There is no info as this is a write buffer or