OMAP and MSM IOMMU driver misbehavior

[Joerg Roedel]

Hi,

while reviewing another IOMMU driver again I came across a problem in
the IOMMU drivers for OMAP and MSM platforms. In both drivers the
'domain_destroy with devices attached' case isn't handled correctly.

OMAP driver seems not to track the devices attached to a domain at all.
So when a domain is destroyed it can happen that the hardware still
references old (and already freed) page-table pointers.

MSM tracks devices in a domain, but does not automatically remove the
devices from a domain that is about to be destroyed.

Please tell me when I mis-read the code, otherwise please fix this in
your drivers so that we can get consistent behavior for IOMMU-API
users :-)

Thanks,

	Joerg

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