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From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Cc: Shuah Khan <shuah.kh@samsung.com>, Russell King <linux@arm.linux.org.uk>,
	ksummit-discuss@lists.linuxfoundation.org, Tejun Heo <tj@kernel.org>
Subject: Re: [Ksummit-discuss] [TECH TOPIC] Fix devm_kzalloc, its users,
	or both
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On Fri, Jul 31, 2015 at 8:14 AM, Laurent Pinchart
<laurent.pinchart@ideasonboard.com> wrote:
> Hello,
>
> It recently came to my attention that the way devm_kzalloc() is used by most
> drivers is broken. I've raised the topic on LKML (see
> http://lkml.org/lkml/2015/7/14/741) in the hope that my findings were simply
> wrong, but it turned out I was unfortunately right. As the topic spans lots of
> subsystems I believe it would be a good technical topic for the Kernel Summit.

<skip>

Just realized another fun fact: most busses execute
dev_pm_domain_detach() in bus' remove() method, but devm-managed
resources (including interrupts and such) are only released in driver
core, which happens after bus' remove() method returns. So we may end
up shutting off PM domain of a device that is still active and may
generate interrupts, etc.

Fun, huh?

Thanks.

-- 
Dmitry