Re: locking in a device driver
From: Dinesh Nair (dinesh_at_alphaque.com)
Date: 11/02/05
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Date: Wed, 02 Nov 2005 13:35:03 +0800 To: Julian Elischer <julian@elischer.org>
On 11/02/05 06:16 Julian Elischer said the following:
> also, why do you need a pseudo device AND a device? The device driver
> can do all the things you have
> suggested on its own.
this is so userland apps wont need to change when different devices are
used. the pseudo device is the front for a number of real device drivers
running different devices from a quad-span E1/T1 line card to 4-port
FXS/FXO line cards. each of these cards are different, but present the same
device interface to the userland app via the pseudo device driver.
-- Regards, /\_/\ "All dogs go to heaven." dinesh@alphaque.com (0 0) http://www.alphaque.com/ +==========================----oOO--(_)--OOo----==========================+ | for a in past present future; do | | for b in clients employers associates relatives neighbours pets; do | | echo "The opinions here in no way reflect the opinions of my $a $b." | | done; done | +=========================================================================+ _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"
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