diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-08-03 09:37:31 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-08-03 09:37:31 -0300 |
| commit | b1aa3db2c13ec0c63a73bd8fc5dfbfb112e3ff56 (patch) | |
| tree | 92ce9158daae144032cc6297ab8fdbad12664247 /kernel/dma/direct.c | |
| parent | 7c43b0c1d499c790cdb5623d27fdcef544ddb566 (diff) | |
| parent | bcf876870b95592b52519ed4aafcf9d95999bc9c (diff) | |
Merge remote-tracking branch 'torvalds/master' into perf/core
Minor conflict in tools/perf/arch/arm/util/auxtrace.c as one fix there
was cherry-picked for the last perf/urgent pull req to Linus, so was
already there.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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)); +} |