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Date: Fri, 23 Jan 2009 12:59:52 +0000
From: "Bruce M. Simpson" <bms@FreeBSD.org>
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To: John Baldwin <jhb@freebsd.org>
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Cc: current@freebsd.org
Subject: Re: [PATCH] ppbus/ppc locking
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John Baldwin wrote:
> Try http://www.FreeBSD.org/~jhb/patches/ppc_mpsafe_7.patch  It is a complete 
> backport generated against a fresh stable/7 tree.  It does not need the 
> interrupt changes since my locking patches actually undo them.
>
>   

After applying this patch to 7.1-RELEASE:
%%%
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/9 bytes threshold
ppc0: [ITHREAD]
ppbus0: <Parallel port bus> on ppc0
lpt0: <Printer> on ppbus0
lpt0: [ITHREAD]
lpt0: Interrupt-driven port
%%%

...I tried printing, didn't work, it seems /dev/lpt0 doesn't exist ?