On Mon, Feb 10, 2014 at 06:32:32PM +0000, Will Deacon wrote:
> - Andreas Herrmann took the driver for a run with a real SATA
> controller, which caused the new mutex-based locking to explode
> since we require mappings in atomic context
I just did quick review of the changes. Was the SATA controller using
the IOMMU through the DMA-API? In this case you would need the IRQ-safe
spinlocks to avoid dead-locks because the DMA-API can be used from
IRQ-context.
Joerg
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