linux-kernel - Re: [PATCH v4 1/8] thermal: Provide stub for thermal_of_cooling_device

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Date:	Wed, 25 Feb 2015 13:26:23 +0100
From:	Lukasz Majewski <l.majewski@...sung.com>
To:	Eduardo Valentin <edubezval@...il.com>
Cc:	Kamil Debski <k.debski@...sung.com>,
	Jean Delvare <jdelvare@...e.de>,
	Guenter Roeck <linux@...ck-us.net>,
	Kukjin Kim <kgene@...nel.org>, lm-sensors@...sensors.org,
	Linux PM list <linux-pm@...r.kernel.org>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>, devicetree@...r.kernel.org,
	Lukasz Majewski <l.majewski@...ess.pl>,
	Kukjin Kim <kgene.kim@...sung.com>,
	linux-kernel@...r.kernel.org,
	Sjoerd Simons <sjoerd.simons@...labora.co.uk>,
	Abhilash Kesavan <kesavan.abhilash@...il.com>,
	Abhilash Kesavan <a.kesavan@...sung.com>
Subject: Re: [PATCH v4 1/8] thermal: Provide stub for
 thermal_of_cooling_device_register() function

Hi Eduardo,

> On Wed, Feb 18, 2015 at 11:07:29AM +0100, Lukasz Majewski wrote:
> > Odroid U3 fan can work without being registered as OF cooling device
> > (with CONFIG_THERMAL_OF disabled).
> > In this situation it can be controlled via PWM entry at
> > /sys/class/hwmon/hwmon0/pwm1.
> > 
> > Therefore, the thermal_of_cooling_device_register() function needs
> > a stub to allow clean compilation.
> 
> 
> I've just applied a patch on this same matter from Nishanth Menon [1].
> Can you please check if his patch is enough for you?
> 
> [1] -
> https://git.kernel.org/cgit/linux/kernel/git/evalenti/linux-soc-thermal.git/commit/?h=fixes&id=12ca7188468ee29c4e717f73db4bf43c90954fc7
> 

I will prepare new PWM-FAN patch set with above changes in mind.


> 
> > 
> > Signed-off-by: Lukasz Majewski <l.majewski@...sung.com>
> > ---
> > Changes for v2:
> > - None
> > Changes for v3:
> > - Provide stub declaration when CONFIG_THERMAL is not set
> > Changes for v4:
> > - None
> > ---
> >  include/linux/thermal.h | 17 ++++++++++++++---
> >  1 file changed, 14 insertions(+), 3 deletions(-)
> > 
> > diff --git a/include/linux/thermal.h b/include/linux/thermal.h
> > index fc52e30..eacf2de 100644
> > --- a/include/linux/thermal.h
> > +++ b/include/linux/thermal.h
> > @@ -293,6 +293,20 @@ struct thermal_trip {
> >  };
> >  
> >  /* Function declarations */
> > +#ifdef CONFIG_THERMAL
> > +struct thermal_cooling_device *
> > +thermal_of_cooling_device_register(struct device_node *np,
> > +				   char *type, void *devdata,
> > +				   const struct
> > thermal_cooling_device_ops *); +#else
> > +static inline struct thermal_cooling_device *
> > +thermal_of_cooling_device_register(struct device_node *np,
> > +				   char *type, void *devdata,
> > +				   const struct
> > thermal_cooling_device_ops *ops) +{
> > +	return NULL;
> > +}
> > +#endif
> >  #ifdef CONFIG_THERMAL_OF
> >  struct thermal_zone_device *
> >  thermal_zone_of_sensor_register(struct device *dev, int id, void
> > *data, @@ -328,9 +342,6 @@ void thermal_zone_device_update(struct
> > thermal_zone_device *); 
> >  struct thermal_cooling_device
> > *thermal_cooling_device_register(char *, void *, const struct
> > thermal_cooling_device_ops *); -struct thermal_cooling_device *
> > -thermal_of_cooling_device_register(struct device_node *np, char *,
> > void *,
> > -				   const struct
> > thermal_cooling_device_ops *); void
> > thermal_cooling_device_unregister(struct thermal_cooling_device *);
> > struct thermal_zone_device *thermal_zone_get_zone_by_name(const
> > char *name); int thermal_zone_get_temp(struct thermal_zone_device
> > *tz, unsigned long *temp); -- 2.0.0.rc2
> > 



-- 
Best regards,

Lukasz Majewski

Samsung R&D Institute Poland (SRPOL) | Linux Platform Group
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