linux-kernel - Re: [PATCH] RTC: mark if rtc-cmos drivers were successfully registered.

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Date:	Mon, 20 Jul 2009 22:32:06 +0200
From:	Kay Sievers <kay.sievers@...y.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com>,
	rtc-linux@...glegroups.com, linux-kernel@...r.kernel.org,
	dbrownell@...rs.sourceforge.net, bjorn.helgaas@...com,
	Alessandro Zummo <a.zummo@...ertech.it>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg KH <greg@...ah.com>
Subject: Re: [PATCH] RTC: mark if rtc-cmos drivers were successfully 
	registered.

On Mon, Jul 20, 2009 at 22:19, Andrew Morton<akpm@...ux-foundation.org> wrote:
> On Sun,  5 Jul 2009 01:07:59 -0300
> Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com> wrote:
>
>> rtc-cmos has two drivers, one PNP and one platform. When PNP has not
>> succeeded probing, platform is registered. However, it tries to
>> unregister both drivers unconditionally, instead of only unregistering
>> those that were successfully registered. Fix that with a boolean
>> variable for each driver indicating whether registering was successful.

> This came up a few weeks ago - the kernel was actually crashing deep
> down in the driver core, when a not-registered device was unregistered.
>
> I believe Kay was planning on making the driver core more robust, so
> that crash shouldn't be happening any more.  Kay, can you please confirm
> that thsi got fixed?

This is supposed to fix it:
  http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5c8563d773c0e9f0ac2a552e84806decd98ce732

Thanks,
Kay
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