[PATCH 4/4] dma-mapping: clear dev->dma_ops in arch_teardown_dma_ops

Robin Murphy robin.murphy at arm.com
Wed Sep 26 03:45:27 PDT 2018


On 25/09/18 21:16, Christoph Hellwig wrote:
> Looking at the code I think this commit is simply broken for
> architectures not using arch_setup_dma_ops, but instead setting up
> the dma ops through arch specific magic.
> 
> I'll revert the patch.

Ugh, sorry about missing that too. Ack to a revert - thinking about 
those PPC symptoms, it might actually be that other architectures could 
also get into the same pickle just by unbinding and rebinding a driver 
(e.g. switching to VFIO then back again).

Robin.



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