Re: [PATCH] soc: imx: gpcv2: fix regulator deferred probe

From	Stefan Agner <stefan@agner.ch>
Newsgroups	linux.kernel
Subject	Re: [PATCH] soc: imx: gpcv2: fix regulator deferred probe
Date	2017-08-14 07:20 +0200
Message-ID	<uefXb-8sK-7@gated-at.bofh.it> (permalink)
References	<ua7Yd-5TV-3@gated-at.bofh.it> <uaXN7-7Ew-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hi Shawn,

On 2017-08-04 20:13, Shawn Guo wrote:
> On Wed, Aug 02, 2017 at 12:51:29PM -0700, Stefan Agner wrote:
>> If a regulator requests a deferred probe, the power domain gets
>> initialized twice. This leads to a list double add (without
>> list debugging the kernel hangs due to the double add later):
>>
>>   WARNING: CPU: 0 PID: 19 at lib/list_debug.c:31 __list_add_valid+0xbc/0xc4
>>   list_add double add: new=c1229754, prev=c12383b4, next=c1229754.
>>
>> Initialize the power domain after we get the regulator. Also do
>> not print an error in case the regulator defers probing.
>>
>> Cc: Fabio Estevam <fabio.estevam@nxp.com>
>> Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
>> Cc: linux-arm-kernel@lists.infradead.org
>> Cc: linux-kernel@vger.kernel.org
>> Fixes: 03aa12629fc4 ("soc: imx: Add GPCv2 power gating driver")
>> Signed-off-by: Stefan Agner <stefan@agner.ch>
> 
> Applied, thanks.

As of 4.13-rc5 this did not make it upstream yet, I guess still on its
way?

--
Stefan

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Re: [PATCH] soc: imx: gpcv2: fix regulator deferred probe Stefan Agner <stefan@agner.ch> - 2017-08-14 07:20 +0200
  Re: [PATCH] soc: imx: gpcv2: fix regulator deferred probe Shawn Guo <shawnguo@kernel.org> - 2017-08-14 07:40 +0200
    Re: [PATCH] soc: imx: gpcv2: fix regulator deferred probe Arnd Bergmann <arnd@arndb.de> - 2017-08-15 17:40 +0200

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