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Date: Tue, 12 Dec 2017 12:42:47 +0100
From: Lars-Peter Clausen <lars@...afoo.de>
To: Bartosz Golaszewski <brgl@...ev.pl>,
Mark Brown <broonie@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org
Subject: Re: [PATCH] regmap: allow to disable all locking mechanisms
On 12/06/2017 03:26 PM, Bartosz Golaszewski wrote:
[...]
> + * @disable_locking: This regmap is either protected by external means or
> + * is guaranteed not be be accessed from multiple threads.
To guarantee this you need to make sure that a regmap instance with this
flag set does not register a debugfs interface. debugfs file access happens
from a userspace process and hence could (and probably) is in a different
thread than the driver regmap access.
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