From: Jon Hunter <jonathanh@nvidia.com>
To: Mark Brown <broonie@kernel.org>
Cc: Thierry Reding <thierry.reding@gmail.com>,
Liam Girdwood <lgirdwood@gmail.com>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/5] regulator: core: Resolve supply earlier
Date: Thu, 21 Apr 2016 16:34:39 +0100 [thread overview]
Message-ID: <5718F30F.2050704@nvidia.com> (raw)
In-Reply-To: <20160420152143.GL3217@sirena.org.uk>
On 20/04/16 16:21, Mark Brown wrote:
> * PGP Signed by an unknown key
>
> On Tue, Apr 19, 2016 at 05:09:59PM +0100, Jon Hunter wrote:
>> On 19/04/16 16:40, Mark Brown wrote:
>
>>> This is *really* weird. Why would we need the list lock to do a
>>> device_register()?
>
>> So I did not think that we would want someone to be able to
>> look-up the regulator via of_find_regulator_by_node() until
>> it had been registered successfully. In fact I believe that
>> not locking around device_register() was causing some crashes
>> when I was testing.
>
> What that's saying to me is that the device_register() is too early and
> we shouldn't be registering the device until we're ready for it to be
> used.
True and in fact looking at the code some more I am not sure that the
mutex actually would prevent someone from getting the regulator before
it is completely setup. I have moved this to the end of the registration
and seems to be fine. I will send out some patches for review.
Cheers
Jon
prev parent reply other threads:[~2016-04-21 15:34 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-07 14:22 [PATCH 1/5] regulator: core: Resolve supply earlier Thierry Reding
2016-04-07 14:22 ` [PATCH 2/5] regulator: core: Use parent voltage from the supply when bypassed Thierry Reding
2016-04-12 6:31 ` Applied "regulator: core: Use parent voltage from the supply when bypassed" to the regulator tree Mark Brown
2016-04-07 14:22 ` [PATCH 3/5] regulator: helpers: Ensure bypass register field matches ON value Thierry Reding
2016-04-22 10:49 ` Applied "regulator: helpers: Ensure bypass register field matches ON value" to the regulator tree Mark Brown
2016-04-07 14:22 ` [PATCH 4/5] regulator: as3722: Add bypass support for LDO6 Thierry Reding
2016-04-11 16:15 ` Applied "regulator: as3722: Add bypass support for LDO6" to the regulator tree Mark Brown
2016-04-07 14:22 ` [PATCH 5/5] regulator: as3722: Constify regulator ops Thierry Reding
2016-04-11 16:15 ` Applied "regulator: as3722: Constify regulator ops" to the regulator tree Mark Brown
2016-04-11 10:59 ` [PATCH 1/5] regulator: core: Resolve supply earlier Jon Hunter
2016-04-11 11:46 ` Thierry Reding
2016-04-11 12:19 ` Jon Hunter
2016-04-11 12:49 ` Mark Brown
2016-04-11 14:03 ` Javier Martinez Canillas
2016-04-11 12:58 ` Mark Brown
2016-04-11 13:09 ` Thierry Reding
2016-04-11 13:45 ` Javier Martinez Canillas
2016-04-11 13:57 ` Mark Brown
2016-04-11 14:07 ` Thierry Reding
2016-04-11 14:32 ` Mark Brown
2016-04-11 14:49 ` Thierry Reding
2016-04-11 15:50 ` Mark Brown
2016-04-11 13:56 ` Mark Brown
2016-04-11 14:03 ` Mark Brown
2016-04-11 14:11 ` Thierry Reding
2016-04-11 14:16 ` Mark Brown
2016-04-19 10:16 ` Jon Hunter
2016-04-19 11:03 ` Thierry Reding
2016-04-19 15:40 ` Mark Brown
2016-04-19 16:09 ` Jon Hunter
2016-04-20 15:21 ` Mark Brown
2016-04-21 15:34 ` Jon Hunter [this message]
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