linux-kernel - Re: WARN_ON(): proc_dir_entry 'rtc' already registered

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Date:	Sat, 8 Mar 2008 14:50:48 -0800
From:	David Brownell <david-b@...bell.net>
To:	Pavel Machek <pavel@....cz>
Cc:	kernel list <linux-kernel@...r.kernel.org>
Subject: Re: WARN_ON(): proc_dir_entry 'rtc' already registered

On Tuesday 19 February 2008, Pavel Machek wrote:
> On Mon 2008-02-18 03:08:16, David Brownell wrote:
> > On Monday 18 February 2008, Pavel Machek wrote:
> > > > How to fix ... how about:  instead of just warning folk
> > > > off such legacy RTC drivers [1] we just wrap them with
> > > > an "if RTC_LIB != n" so this mistake won't be possible.
> > > 
> > > Yes, disabling bad configs in Kconfig seems like way to go.
> > 
> > Problem is ... that also disables valid configs that
> > get assembled by picking the right module(s) for the
> > target system.
> 
> Is there any reason to use the old rtc subsystem?
> 
> At least OLD_RTC=y NEW_RTC=y should be disabled... even if OLD_RTC=m
> NEW_RTC=m makes some sense.

The patch I sent earlier today makes the two mutually exclusive.

Note by the way that there is no OLD_RTC analogue ... just a bunch
of individual drivers.

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