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Commit 02b67e09 authored by Chris Metcalf's avatar Chris Metcalf
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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: default avatarChris Metcalf <cmetcalf@tilera.com>
parent dc7d5cf2

arch/tile/kernel/pci-dma.c

+2 −2
Original line number Diff line number Diff line
@@ -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,