Date: Wed, 29 Sep 2004 15:17:47 -0400 From: Brenden Grace <bcg@intelli7.com> To: freebsd-hackers@freebsd.org Cc: Peter Buckingham <peter@pantasys.com> Subject: Re: Device probe issue with an em(4) compatible device Message-ID: <1096485467.2670.1127.camel@localhost.localdomain> In-Reply-To: <415AF2D0.7090002@pantasys.com> References: <1096476707.2670.1088.camel@localhost.localdomain> <415AF2D0.7090002@pantasys.com>
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On Wed, 2004-09-29 at 13:37, Peter Buckingham wrote: > why compile the em driver in at all? it won't probe the device if it > doesn't exist ;-) because I need it ... > otherwise, just add some code to the em's probe routine to check for > your subvendor, subdevice pair and exit without attaching. Well sure (though ugly), but I think having it just return a negative number would be a better fix than that. I was more interested in why the em driver (and others) returns 0 and ends the probing of a device that it could possibly only partially support (based on its matching of PCI_ANY_ID). If I understand DEVICE_PROBE(9) correctly it seems that the whole reason for the negative return scale is to avoid this very issue. -- Brenden C. Grace Intelli7
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