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| author | Ingo Molnar <mingo@kernel.org> | 2020-07-28 13:18:01 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-07-28 13:18:01 +0200 |
| commit | e89d4ca1df630378bde3e36c42001b755b0044fe (patch) | |
| tree | d953ccecb8365acab65d0075e674f7e9a9bd9880 /kernel/dma/direct.c | |
| parent | 2ac5413e5edca6910d2ae157187a889e94be2b62 (diff) | |
| parent | 92ed301919932f777713b9172e525674157e983d (diff) | |
| download | lwn-e89d4ca1df630378bde3e36c42001b755b0044fe.tar.gz lwn-e89d4ca1df630378bde3e36c42001b755b0044fe.zip | |
Merge tag 'v5.8-rc7' into perf/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/dma/direct.c')
| -rw-r--r-- | kernel/dma/direct.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c index 93f578a8e613..67f060b86a73 100644 --- a/kernel/dma/direct.c +++ b/kernel/dma/direct.c @@ -70,7 +70,7 @@ gfp_t dma_direct_optimal_gfp_mask(struct device *dev, u64 dma_mask, return 0; } -static bool dma_coherent_ok(struct device *dev, phys_addr_t phys, size_t size) +bool dma_coherent_ok(struct device *dev, phys_addr_t phys, size_t size) { return phys_to_dma_direct(dev, phys) + size - 1 <= min_not_zero(dev->coherent_dma_mask, dev->bus_dma_limit); @@ -539,3 +539,9 @@ size_t dma_direct_max_mapping_size(struct device *dev) return swiotlb_max_mapping_size(dev); return SIZE_MAX; } + +bool dma_direct_need_sync(struct device *dev, dma_addr_t dma_addr) +{ + return !dev_is_dma_coherent(dev) || + is_swiotlb_buffer(dma_to_phys(dev, dma_addr)); +} |