A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-08 12:58:12 -04:00
Code Issues Projects Releases Packages Wiki Activity

dma-mapping-fast: Align memory allocation to dma_alloc_attrs expectations

Browse source 
On newer kernels, memory allocated by dma_alloc_attrs() is
expected to be zeroed out upon allocation. The allocation
paths in fastmap do not currently account for this new
requirement, so update them to zero out memory, unless
the client explicitly asks for memory to not be zeroed out.

Change-Id: I5c7fa81ab4b8fa98890036082883769ab12443c6
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>
This commit is contained in:
Isaac J. Manjarres 2020-02-13 10:11:33 -08:00
commit 4bb0643878
1 changed files with 4 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

4
drivers/iommu/dma-mapping-fast.c
View file

@ -643,6 +643,7 @@ static void *__fast_smmu_alloc_contiguous(struct device *dev, size_t size,
coherent_addr = page_address(page);
}
memset(coherent_addr, 0, size);
*handle = iova;
return coherent_addr;
@ -681,6 +682,9 @@ static void *fast_smmu_alloc(struct device *dev, size_t size,
return NULL;
}
if (!(attrs & DMA_ATTR_SKIP_ZEROING))
gfp |= __GFP_ZERO;
*handle = DMA_ERROR_CODE;
size = ALIGN(size, SZ_4K);