Re: alpha iommu fixes

Jeff Garzik (jgarzik@mandrakesoft.com)
Sun, 20 May 2001 13:16:25 -0400

Andrea Arcangeli wrote:
>
> On Sun, May 20, 2001 at 03:49:58PM +0200, Andrea Arcangeli wrote:
> > they returned zero. You either have to drop the skb or to try again later
> > if they returns zero.
>
> BTW, pci_map_single is not a nice interface, it cannot return bus
> address 0,

who says?

A value of zero for the mapping is certainly an acceptable value, and it
should be handled by drivers.

In fact its an open bug in a couple net drivers that they check the
mapping to see if it is non-zero...

-- 
Jeff Garzik      | "Do you have to make light of everything?!"
Building 1024    | "I'm extremely serious about nailing your
MandrakeSoft     |  step-daughter, but other than that, yes."
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