pci_map_single return value

Brian King brking at us.ibm.com
Thu Dec 11 01:51:41 EST 2003

Why is it that pci_map_single returns NO_TCE on failure on PPC64 and 0
on failure on IA64? Which one is correct? If NO_TCE is correct, then why
is it defined in a ppc64 include? This makes it difficult for device
drivers to actually check for it.

Brian King
eServer Storage I/O
IBM Linux Technology Center

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