linux-kernel - Re: [PATCH v6 4/9] iio: adc: mcp3911: use resource-managed version of iio_device

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Message-ID: <20220921211308.40d33c50@jic23-huawei>
Date:   Wed, 21 Sep 2022 21:13:08 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Marcus Folkesson <marcus.folkesson@...il.com>
Cc:     Kent Gustavsson <kent@...oris.se>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 4/9] iio: adc: mcp3911: use resource-managed version
 of iio_device_register

On Mon, 19 Sep 2022 16:36:00 +0100
Jonathan Cameron <jic23@...nel.org> wrote:

> On Mon, 12 Sep 2022 13:02:19 +0200
> Marcus Folkesson <marcus.folkesson@...il.com> wrote:
> 
> > Hi,
> > 
> > On Sat, Aug 20, 2022 at 01:41:50PM +0100, Jonathan Cameron wrote:  
> > > On Mon, 15 Aug 2022 08:16:20 +0200
> > > Marcus Folkesson <marcus.folkesson@...il.com> wrote:
> > >     
> > > > Keep using managed resources as much as possible.
> > > > 
> > > > Signed-off-by: Marcus Folkesson <marcus.folkesson@...il.com>
> > > > Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
> > > > ---
> > > >  drivers/iio/adc/mcp3911.c | 53 ++++++++++++---------------------------
> > > >  1 file changed, 16 insertions(+), 37 deletions(-)
> > > > 
> > > > diff --git a/drivers/iio/adc/mcp3911.c b/drivers/iio/adc/mcp3911.c
> > > > index 890af7dca62d..7e2efe702e57 100644
> > > > --- a/drivers/iio/adc/mcp3911.c
> > > > +++ b/drivers/iio/adc/mcp3911.c
> > > > @@ -258,6 +258,13 @@ static int mcp3911_config(struct mcp3911 *adc)
> > > >  	return  mcp3911_write(adc, MCP3911_REG_CONFIG, configreg, 2);
> > > >  }
> > > >  
> > > > +static void mcp3911_cleanup_regulator(void *_adc)    
> > > 
> > > Missed this on previous versions, but why not pass
> > > the regulator pointer in as the parameter for the callback?
> > > 
> > > static void mcp391_cleanup_regulator(void *reg)
> > > {
> > > 	regulator_disable(adc->vref);
> > > }
> > > 
> > > Note this can't use the new devm_regulator_get_enable()
> > > because we need access to the regulator within the driver.
> > > 
> > > I can tidy this up whilst applying (or given it's really minor I might
> > > not bother :)
> > > 
> > > Note we are stalled at the moment with this series on getting the
> > > fixes upstream.  I'll probably send that pull request shortly.    
> > 
> > Just a friendly reminder to not forget to pick up this series.  
> 
> If things go according to plan, Greg will take the pull request
> I sent the other day and I can fast forward the tree such that
> the first 3 patches are in my upstream, then do a second pull
> request with these applied. They aim here being to keep the
> history reasonably clean rather than spaghetti merges.
> Fingers crossed on timing working out. This all got delayed
> because I sat on the pull request for a week due to travel and
> dodgy airport wifi etc.
> 

Now applied to the togreg branch of iio.git.
Pushed out as testing for some brief testing by 0day etc.

Jonathan

> Jonathan
> 
> > 
> > Thanks,
> > 
> > /Marcus  
>