Re: [Patch] dma_sync_to_device

[James Bottomley]

Just to be sure we eliminate all confusion (and it amazes me how
frequently this comes up), could you add some words DMA-mapping.txt to
make clear that this new API does not address PCI posting (which is a
problem with onward write cache flushing in the PCI bridge)---otherwise
I can see device driver writers thinking that
pci_dma_sync_to_device_single(... DMA_TO_DEVICE) will flush posted
writes.

Thanks,

James


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/