linux-kernel - Re: [RFC] Kconfig fun with sparc32/sparc64 rtc drivers

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Date:	Sat, 21 Jul 2007 22:54:13 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	viro@....linux.org.uk
Cc:	linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org,
	sam@...nborg.org
Subject: Re: [RFC] Kconfig fun with sparc32/sparc64 rtc drivers

From: Al Viro <viro@....linux.org.uk>
Date: Sun, 22 Jul 2007 06:43:56 +0100

> seems to imply that CONFIG_RTC has no business whatsoever on sparc64 builds,
> let alone in defconfig - JavaStation had never gone sparc64.  OTOH, we
> have explicit scanning ISA bus in addition to EBUS in drivers/char/rtc.c
> in case of __sparc_v9__, so it looks like help above ought to be changed.
> OTTH, the isa-scanning code looks odd - for comparison, FreeBSD has
> the same logics for ebus (looks for node called "rtc"), but the isa probe
> in the same driver (sys/sparc64/sparc64/rtc.c) is

It doesn't get built on sparc64 any more.

If you look at the current tree:

1) we handle all of the sparc64 RTC stuff in arch/sparc64/kernel/time
2) all the __sparc_v9__ crap is removed from drivers/char/rtc.c
3) all the __sparc__ crap is changed to CONFIG_SPARC32 in same
4) CONFIG_RTC is not longer allows on sparc64, only sparc32 with PCI
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