Re: alpha iommu fixes

[Andrew Morton]

Andrea Arcangeli wrote:
> 
> > I can't find *any* pci_map_single() in the 2.4.4-ac9 tree
> > which can fail, BTW.
> 
> I assume you mean that no one single caller of pci_map_single is
> checking if it failed or not (because all pci_map_single can fail).

No.  Most of the pci_map_single() implementations just
use virt_to_bus()/virt_to_phys().  Even sparc64's fancy
iommu-based pci_map_single() always succeeds.
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