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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-04-11 11:34:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-04-11 11:34:36 -0700 |
| commit | 75e71883979c2c173ef2530a8b90a629f17f3107 (patch) | |
| tree | 3d06320f0c1db7d42d338e12d5188eb92ebf19ef /kernel | |
| parent | b753101a4ac0b906064a72feec43f5b80a1fe2e5 (diff) | |
| parent | 9bb50ed7470944238ec8e30a94ef096caf9056ee (diff) | |
Merge tag 'dma-mapping-5.7-1' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fixes from Christoph Hellwig:
- fix an integer truncation in dma_direct_get_required_mask
(Kishon Vijay Abraham)
- fix the display of dma mapping types (Grygorii Strashko)
* tag 'dma-mapping-5.7-1' of git://git.infradead.org/users/hch/dma-mapping:
dma-debug: fix displaying of dma allocation type
dma-direct: fix data truncation in dma_direct_get_required_mask()
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/dma/debug.c | 9 | ||||
| -rw-r--r-- | kernel/dma/direct.c | 3 |
2 files changed, 8 insertions, 4 deletions
diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c index 2031ed1ad7fa..9e1777c81f55 100644 --- a/kernel/dma/debug.c +++ b/kernel/dma/debug.c @@ -137,9 +137,12 @@ static const char *const maperr2str[] = { [MAP_ERR_CHECKED] = "dma map error checked", }; -static const char *type2name[5] = { "single", "page", - "scather-gather", "coherent", - "resource" }; +static const char *type2name[] = { + [dma_debug_single] = "single", + [dma_debug_sg] = "scather-gather", + [dma_debug_coherent] = "coherent", + [dma_debug_resource] = "resource", +}; static const char *dir2name[4] = { "DMA_BIDIRECTIONAL", "DMA_TO_DEVICE", "DMA_FROM_DEVICE", "DMA_NONE" }; diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c index a8560052a915..8f4bbdaf965e 100644 --- a/kernel/dma/direct.c +++ b/kernel/dma/direct.c @@ -39,7 +39,8 @@ static inline struct page *dma_direct_to_page(struct device *dev, u64 dma_direct_get_required_mask(struct device *dev) { - u64 max_dma = phys_to_dma_direct(dev, (max_pfn - 1) << PAGE_SHIFT); + phys_addr_t phys = (phys_addr_t)(max_pfn - 1) << PAGE_SHIFT; + u64 max_dma = phys_to_dma_direct(dev, phys); return (1ULL << (fls64(max_dma) - 1)) * 2 - 1; } |