diff options
| author | Hridya Valsaraju <hridya@google.com> | 2021-07-21 20:56:53 -0700 |
|---|---|---|
| committer | Craig Dooley <dooleyc@google.com> | 2021-07-22 20:19:04 +0000 |
| commit | bea496add63f65a116f684f78eafaf865b056f1e (patch) | |
| tree | b09192bad50d033877907491d4faab27dabb87df | |
| parent | d40e87e5fb22c652b228550e48a9e8ff0b84fc59 (diff) | |
| download | aoc-bea496add63f65a116f684f78eafaf865b056f1e.tar.gz | |
aoc: physical_heap: map buffers as uncached
All buffers allocated from the physical heap are uncached. Hence, when
using vmap()to the map the buffer to memset(),
map it as uncached so that a cache flush is not required.
Test: atest
CtsSensorTestCases: android.hardware.cts.SensorNativeTest#testNative
Bug: 192086715
Change-Id: I630c9c88651513aeb5d45323661a0f9d17e94adb
| -rw-r--r-- | ion_physical_heap.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/ion_physical_heap.c b/ion_physical_heap.c index aed4d18..30c8250 100644 --- a/ion_physical_heap.c +++ b/ion_physical_heap.c @@ -68,7 +68,7 @@ static int _sglist_zero(struct scatterlist *sgl, unsigned int nents, static int _buffer_zero(struct samsung_dma_buffer *buffer) { - pgprot_t pgprot = PAGE_KERNEL; + pgprot_t pgprot = pgprot_writecombine(PAGE_KERNEL); return _sglist_zero(buffer->sg_table.sgl, buffer->sg_table.orig_nents, pgprot); } @@ -209,7 +209,7 @@ struct dma_heap *ion_physical_heap_create(phys_addr_t base, size_t size, page = pfn_to_page(PFN_DOWN(base)); - ret = _pages_zero(page, size, PAGE_KERNEL); + ret = _pages_zero(page, size, pgprot_writecombine(PAGE_KERNEL)); if (ret) return ERR_PTR(ret); |