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| author | Bjorn Helgaas <bhelgaas@google.com> | 2014-05-20 16:54:23 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2014-05-20 16:55:39 -0600 |
| commit | ace4b3fd67e771951d495aa1f1b1000984083362 (patch) | |
| tree | 6af143970c659a6755795c1f4a499b4d014c030a /Documentation/DMA-API-HOWTO.txt | |
| parent | 88a984ba0795f14a3847edbd7fabe652289ea89b (diff) | |
| download | linux-ace4b3fd67e771951d495aa1f1b1000984083362.tar.bz2 | |
sh/PCI: Pass GAPSPCI_DMA_BASE CPU & bus address to dma_declare_coherent_memory()
dma_declare_coherent_memory() needs both the CPU physical address and the
bus address of the device memory. They are the same on this platform, but
in general we should use pcibios_resource_to_bus() to account for any
address translation done by the PCI host bridge.
This makes no difference on Dreamcast, but is safer if the usage is copied
to future drivers.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
CC: Magnus Damm <damm@opensource.se>
CC: linux-sh@vger.kernel.org
Diffstat (limited to 'Documentation/DMA-API-HOWTO.txt')
0 files changed, 0 insertions, 0 deletions