Messages in this thread | | | Date | Sat, 16 Mar 2002 04:00:03 -0500 | From | Jeff Garzik <> | Subject | Re: [PATCH] devexit fixes in i82092.c |
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Linus Torvalds wrote:
>We could make one of the methods be "startup", of course, and move the >actual device initialization there (and leave just the "find driver" in >the initcall logic), but that would not get rid of the initcalls, it would >just split them into two parts. > doing this has been mentioned independently a couple times, in fact...
And this may be a tangent, or maybe not: like I was trying to explain to Gerard about regarding SCSI devices, it is often valuable to separate the two steps. Gerard complained about the new PCI API not being able to register devices (_register_, not probe) in the order he wished. And my response was... sure you can. Just break it up into two steps, find devices, and register devices. The ordering of the register calls in the second step are entirely up the driver and/or subsystem. Similarly, the IDE subsystem could handle the mapping of the BIOS-ordered /dev/hd[a-d] completely independently of probing and registering hosts and devices. [which, in turn, is useful in moving to a more dynamic /dev among other things] Right now the IDE probe order is a bit delicate, and full of hueristics that could be cleaned up with such a separation.
Jeff, in a rambling mood
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