Re: [PATCH] ASoC: wm8731: Disable the regulator when probing fails
From: Zheyu Ma
Date: Wed Apr 06 2022 - 10:50:02 EST
On Wed, Apr 6, 2022 at 6:01 PM Charles Keepax
> On Tue, Apr 05, 2022 at 08:10:38PM +0800, Zheyu Ma wrote:
> > When the driver fails during probing, the driver should disable the
> > regulator, not just handle it in wm8731_hw_init().
> > The following log reveals it:
> > [ 17.812483] WARNING: CPU: 1 PID: 364 at drivers/regulator/core.c:2257 _regulator_put+0x3ec/0x4e0
> > [ 17.815958] RIP: 0010:_regulator_put+0x3ec/0x4e0
> > [ 17.824467] Call Trace:
> > [ 17.824774] <TASK>
> > [ 17.825040] regulator_bulk_free+0x82/0xe0
> > [ 17.825514] devres_release_group+0x319/0x3d0
> > [ 17.825882] i2c_device_probe+0x766/0x940
> > [ 17.829198] i2c_register_driver+0xb5/0x130
> > Signed-off-by: Zheyu Ma <zheyuma97@xxxxxxxxx>
> > ---
> Mark just merged a big chain overhauling a lot of this driver, at
> the very least this patch is going to require a rebase on top of
> that lot.
Thanks for your reminder, this bug has been fixed in the latest code.