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Date:      Mon, 18 Apr 2005 22:44:05 -0600
From:      Scott Long <scottl@samsco.org>
To:        "Conrad J. Sabatier" <conrads@cox.net>
Cc:        Mathew Kanner <mat@cnd.mcgill.ca>
Subject:   Re: What happened to the "d_maj" member of "struct cdevsw" in CURRENT?
Message-ID:  <42648C95.3010102@samsco.org>
In-Reply-To: <20050418232455.2d530890@dolphin.local.net>

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Conrad J. Sabatier wrote:
> I've been trying to help Mat Kanner with his yet-to-be-committed MIDI
> patches, and have run into a perplexing problem on amd64 CURRENT.  It
> seems the "d_maj" member of "struct cdevsw" no longer exists (in
> sys/sys/conf.h).  This is causing Mat's MIDI patches to fail with:
> 
> 
> 
>>===> sound/midi (all)
>>cc -O -pipe -march=athlon64 -Wno-error -D_KERNEL -DKLD_MODULE
>>-nostdinc -I-   -include /usr/obj/usr/src/sys/CUSTOM/opt_global.h -I.
>>-I@ -I@/contrib/altq -I@/../include -finline-limit=8000 -fno-common -g
>>-fno-omit-frame-pointer -I/usr/obj/usr/src/sys/CUSTOM -mcmodel=kernel
>>-mno-red-zone  -mfpmath=387 -mno-sse -mno-sse2 -mno-mmx -mno-3dnow 
>>-msoft-float -fno-asynchronous-unwind-tables -ffreestanding -Wall
>>-Wredundant-decls -Wnested-externs -Wstrict-prototypes 
>>-Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual 
>>-fformat-extensions -std=c99 -c
>>/usr/src/sys/modules/sound/midi/../../../dev/sound/midi/midi.c
>>/usr/src/sys/modules/sound/midi/../../../dev/sound/midi/midi.c:204:
>>error: unknown field `d_maj' specified in initializer
> 
> 
> When was this member removed, and why?  And how to work around this?
> 
> Thanks!
> 

Major numbers are now dynamically assigned.  The shims for allowing
drivers to choose a static major number were removed a few months ago.
There is no work-around for this; just don't include the field anymore
in 6-current sources.  If there is something that thinks it needs
explicit knowledge of major numbers, let me know and we can discuss how
to fix it.

Scott


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