diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-10-23 16:14:59 +0100 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2017-02-23 03:51:03 +0000 |
| commit | d05fedab817c43171d355d3aad5a9281ff80a7ba (patch) | |
| tree | a6297ba9e8901dea4a79bf57e5d23ab4c5b62a73 | |
| parent | 3e21b29fc335c07161b01459a4123721da2e4642 (diff) | |
ARM: dma-mapping: don't allow DMA mappings to be marked executable
commit 0ea1ec713f04bdfac343c9702b21cd3a7c711826 upstream.
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>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -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 e1dd92c04939..f79610107988 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -374,7 +374,7 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gf return memory; return __dma_alloc(dev, size, handle, gfp, - pgprot_dmacoherent(pgprot_kernel)); + pgprot_dmacoherent(PAGE_KERNEL)); } EXPORT_SYMBOL(dma_alloc_coherent); @@ -386,7 +386,7 @@ void * dma_alloc_writecombine(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp) { return __dma_alloc(dev, size, handle, gfp, - pgprot_writecombine(pgprot_kernel)); + pgprot_writecombine(PAGE_KERNEL)); } EXPORT_SYMBOL(dma_alloc_writecombine); |