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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-10-23 16:14:59 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-10-24 11:17:27 +0100 |
| commit | 0ea1ec713f04bdfac343c9702b21cd3a7c711826 (patch) | |
| tree | 9ec6404b4db40cbdfa705e8addc9f35071dc6586 /arch/arm/mm/dma-mapping.c | |
| parent | 59fd3033b55642da97b4ecde0c85de78d7229675 (diff) | |
| download | lwn-0ea1ec713f04bdfac343c9702b21cd3a7c711826.tar.gz lwn-0ea1ec713f04bdfac343c9702b21cd3a7c711826.zip | |
ARM: dma-mapping: don't allow DMA mappings to be marked executable
DMA mapping permissions were being derived from pgprot_kernel directly
without using PAGE_KERNEL. This causes them to be marked with executable
permission, which is not what we want. Fix this.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/dma-mapping.c')
| -rw-r--r-- | arch/arm/mm/dma-mapping.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index f5e1a8471714..57438506d524 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -687,7 +687,7 @@ static void *__dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, void *arm_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp, struct dma_attrs *attrs) { - pgprot_t prot = __get_dma_pgprot(attrs, pgprot_kernel); + pgprot_t prot = __get_dma_pgprot(attrs, PAGE_KERNEL); void *memory; if (dma_alloc_from_coherent(dev, size, handle, &memory)) @@ -700,7 +700,7 @@ void *arm_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, static void *arm_coherent_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp, struct dma_attrs *attrs) { - pgprot_t prot = __get_dma_pgprot(attrs, pgprot_kernel); + pgprot_t prot = __get_dma_pgprot(attrs, PAGE_KERNEL); void *memory; if (dma_alloc_from_coherent(dev, size, handle, &memory)) |