PCI/P2PDMA: Apply bus offset correctly in DMA address calculation

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The bus offset is bus address - physical address, so the calculation in
__pci_p2pdma_map_sg should be: bus address = physical address + bus offset.

Correct the dma_address computation in __pci_p2pdma_map_sg().

Link: https://lore.kernel.org/r/20210909032528.24517-1-wanglu@dapustor.com
Signed-off-by: Wang Lu <wanglu@dapustor.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>

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Wang Lu 2021-09-09 11:25:28 +08:00 • committed by Bjorn Helgaas

parent e4e737bb5c

commit 3a19407913

1 changed files with 1 additions and 1 deletions

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drivers/pci/p2pdma.c

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