Messages in this thread | | | Date | Thu, 3 Aug 2017 10:50:18 +0800 | From | Shawn Guo <> | Subject | Re: [PATCH] soc: imx: gpcv2: fix regulator deferred probe |
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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> > --- > Hi Shawn, > > Since this leads to a Kernel hang in v4.13-rc3, can you get this > into v4.13 still?
Sure. But before doing that, I would like to get an ACK from Andrey on this fix.
Shawn
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