diff options
| author | Ingo Molnar <mingo@kernel.org> | 2017-07-18 12:36:53 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-07-18 12:36:53 +0300 |
| commit | 1ed7d32763857fbdc8e406352404538e41050d22 (patch) | |
| tree | f97c5d8f548141bf7cdec0a9d7f22adb61da6efc /arch/arm64/mm/dma-mapping.c | |
| parent | 660da7c9228f685b2ebe664f9fd69aaddcc420b5 (diff) | |
| parent | 27aac20574110abfd594175a668dc58b23b2b14a (diff) | |
| download | linux-1ed7d32763857fbdc8e406352404538e41050d22.tar.xz | |
Merge branch 'x86/boot' into x86/mm, to pick up interacting changes
The SME patches we are about to apply add some E820 logic, so merge in
pending E820 code changes first, to have a single code base.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm64/mm/dma-mapping.c')
| -rw-r--r-- | arch/arm64/mm/dma-mapping.c | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c index 3216e098c058..e90cd1db42a8 100644 --- a/arch/arm64/mm/dma-mapping.c +++ b/arch/arm64/mm/dma-mapping.c @@ -95,11 +95,6 @@ static void *__dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flags, unsigned long attrs) { - if (dev == NULL) { - WARN_ONCE(1, "Use an actual device structure for DMA allocation\n"); - return NULL; - } - if (IS_ENABLED(CONFIG_ZONE_DMA) && dev->coherent_dma_mask <= DMA_BIT_MASK(32)) flags |= GFP_DMA; @@ -128,10 +123,6 @@ static void __dma_free_coherent(struct device *dev, size_t size, bool freed; phys_addr_t paddr = dma_to_phys(dev, dma_handle); - if (dev == NULL) { - WARN_ONCE(1, "Use an actual device structure for DMA allocation\n"); - return; - } freed = dma_release_from_contiguous(dev, phys_to_page(paddr), @@ -184,7 +175,6 @@ static void *__dma_alloc(struct device *dev, size_t size, no_map: __dma_free_coherent(dev, size, ptr, *dma_handle, attrs); no_mem: - *dma_handle = DMA_ERROR_CODE; return NULL; } @@ -487,7 +477,7 @@ static dma_addr_t __dummy_map_page(struct device *dev, struct page *page, enum dma_data_direction dir, unsigned long attrs) { - return DMA_ERROR_CODE; + return 0; } static void __dummy_unmap_page(struct device *dev, dma_addr_t dev_addr, |