linux-kernel - RE: [PATCH v3 5/5] MFD: ti_tscadc: add suspend/resume functionality

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Message-ID: <D958900912E20642BCBC71664EFECE3E6DDEFB8F54@BGMAIL02.nvidia.com>
Date:	Fri, 14 Sep 2012 10:39:20 +0530
From:	Venu Byravarasu <vbyravarasu@...dia.com>
To:	"Patil, Rachna" <rachna@...com>,
	Lars-Peter Clausen <lars@...afoo.de>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
	"linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Dmitry Torokhov <dtor@...l.ru>,
	Jonathan Cameron <jic23@....ac.uk>
Subject: RE: [PATCH v3 5/5] MFD: ti_tscadc: add suspend/resume functionality

> -----Original Message-----
> From: linux-kernel-owner@...r.kernel.org [mailto:linux-kernel-
> owner@...r.kernel.org] On Behalf Of Patil, Rachna
> Sent: Friday, September 14, 2012 10:29 AM
> To: Lars-Peter Clausen
> Cc: linux-kernel@...r.kernel.org; linux-input@...r.kernel.org; linux-
> iio@...r.kernel.org; Samuel Ortiz; Dmitry Torokhov; Dmitry Torokhov;
> Jonathan Cameron
> Subject: RE: [PATCH v3 5/5] MFD: ti_tscadc: add suspend/resume
> functionality
> 
> On Thu, Sep 13, 2012 at 18:31:35, Lars-Peter Clausen wrote:
> > On 09/13/2012 12:40 PM, Patil, Rachna wrote:
> > > This patch adds support for suspend/resume of TSC/ADC MFDevice.
> > >
> > > Signed-off-by: Patil, Rachna <rachna@...com>
> > > ---
> > > Changes in v2:
> > > 	Added this patch newly in this patch series.
> > >
> > > Changes in v3:
> > > 	No changes.
> > >
> > >  drivers/iio/adc/ti_adc.c           |   32
> ++++++++++++++++++++++++++++++++
> > >  drivers/input/touchscreen/ti_tsc.c |   33
> +++++++++++++++++++++++++++++++++
> > >  drivers/mfd/ti_tscadc.c            |   33
> ++++++++++++++++++++++++++++++++-
> > >  include/linux/mfd/ti_tscadc.h      |    3 +++
> > >  4 files changed, 100 insertions(+), 1 deletions(-)
> > >
> > > diff --git a/drivers/iio/adc/ti_adc.c b/drivers/iio/adc/ti_adc.c index
> > > 56f8af2..69f19f0 100644
> > > --- a/drivers/iio/adc/ti_adc.c
> > > +++ b/drivers/iio/adc/ti_adc.c
> > > @@ -207,6 +207,36 @@ static int __devexit tiadc_remove(struct
> platform_device *pdev)
> > >  	return 0;
> > >  }
> > >
> > [...]
> > >  static struct platform_driver tiadc_driver = {
> > >  	.driver = {
> > >  		.name   = "tiadc",
> > > @@ -214,6 +244,8 @@ static struct platform_driver tiadc_driver = {
> > >  	},
> > >  	.probe	= tiadc_probe,
> > >  	.remove	= __devexit_p(tiadc_remove),
> > > +	.suspend = adc_suspend,
> > > +	.resume = adc_resume,
> > >  };
> > >
> >
> >
> > Using the suspend/resume callbacks is deprecated, please use
> dev_pm_ops.
> > Same comment applies to the other two drivers.
> 
> Ok. I will make changes in all the 3 driver to use dev_pm_ops instead of
> suspend/resume callbacks.

Probably you might need to protect suspend/resumes with CONFIG_PM. 

> 
> Regards,
> Rachna
> 
> >
> >
> >
> 
> --
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