Subject: Re: am79900.c assumes little-endian processor?
To: David Edelsohn <firstname.lastname@example.org>
From: Michael Richardson <email@example.com>
Date: 11/09/1999 23:54:31
>>>>> "David" == David Edelsohn <firstname.lastname@example.org> writes:
David> The driver also has a potential problem that the descriptors are
David> defined in a shadow structure and then copied to the real descriptors seen
David> by the chip, but that only is correct if the copy is atomic -- which it is
David> not. The status bits are in the middle of the descriptor structure, so
David> the "ownership" bit could flip without the descriptor in a completely
David> self-consitent start. If some asynchronous event caused the chip to start
David> before the explicit CSR kick, things could go wrong.
That's no a problem on 79C792: just put them in SWSTYLE #3, which is
optomized for this kind of copy. The copy itself is unnecessary on PCI anyway.
] At IETF46 in Washington, DC --- wireless | firewalls [
] Michael Richardson, Sandelman Software Works, Ottawa, ON |net architect[
] email@example.com http://www.sandelman.ottawa.on.ca/ |device driver[
] panic("Just another NetBSD/notebook using, kernel hacking, security guy"); [