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| author | Chris Metcalf <cmetcalf@tilera.com> | 2013-08-05 19:45:28 +0200 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2013-08-06 18:56:04 +0200 |
| commit | 02b67e09541b85d8f92e0a68a9deb1c33e6626bb (patch) | |
| tree | e74fb25de3a1572e5d648953bfaf59a6999031fb /arch/tile/kernel | |
| parent | tile PCI RC: add dma_get_required_mask() (diff) | |
| download | linux-02b67e09541b85d8f92e0a68a9deb1c33e6626bb.tar.xz linux-02b67e09541b85d8f92e0a68a9deb1c33e6626bb.zip | |
tile PCI DMA: fix bug in non-page-aligned accessors
The code incorrectly masked with PAGE_OFFSET instead of
PAGE_SIZE-1. This only matters when trying to do a
non page-aligned DMA; it was noticed during code inspection.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/kernel')
| -rw-r--r-- | arch/tile/kernel/pci-dma.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/tile/kernel/pci-dma.c b/arch/tile/kernel/pci-dma.c index 9fef64d70c56..d94f4872e94f 100644 --- a/arch/tile/kernel/pci-dma.c +++ b/arch/tile/kernel/pci-dma.c @@ -257,7 +257,7 @@ static void tile_dma_unmap_page(struct device *dev, dma_addr_t dma_address, BUG_ON(!valid_dma_direction(direction)); __dma_complete_page(pfn_to_page(PFN_DOWN(dma_address)), - dma_address & PAGE_OFFSET, size, direction); + dma_address & (PAGE_SIZE - 1), size, direction); } static void tile_dma_sync_single_for_cpu(struct device *dev, @@ -436,7 +436,7 @@ static void tile_pci_dma_unmap_page(struct device *dev, dma_addr_t dma_address, dma_address -= get_dma_offset(dev); __dma_complete_page(pfn_to_page(PFN_DOWN(dma_address)), - dma_address & PAGE_OFFSET, size, direction); + dma_address & (PAGE_SIZE - 1), size, direction); } static void tile_pci_dma_sync_single_for_cpu(struct device *dev, |