linux-kernel - Re: [PATCH v4 1/3] interconnect: Export of_icc_get_from

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Message-ID: <6c41f75456d4c9347414b94215162d81acf4b84a.camel@samsung.com>
Date:   Fri, 24 Jan 2020 12:22:29 +0100
From:   Artur Świgoń <a.swigon@...sung.com>
To:     Georgi Djakov <georgi.djakov@...aro.org>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Cc:     cw00.choi@...sung.com, b.zolnierkie@...sung.com,
        m.szyprowski@...sung.com, krzk@...nel.org
Subject: Re: [PATCH v4 1/3] interconnect: Export of_icc_get_from_provider()

Hi,

On Thu, 2020-01-23 at 11:21 +0200, Georgi Djakov wrote:
> Hi Artur,
> 
> On 1/16/20 16:42, Artur Świgoń wrote:
> > This patch makes the above function public (for use in exynos-bus devfreq
> > driver).
> > 
> > Signed-off-by: Artur Świgoń <a.swigon@...sung.com>
> > Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>
> > Reviewed-by: Chanwoo Choi <cw00.choi@...sung.com>
> > ---
> >  drivers/interconnect/core.c           | 3 ++-
> >  include/linux/interconnect-provider.h | 6 ++++++
> >  2 files changed, 8 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c
> > index f277e467156f..0be1764d3528 100644
> > --- a/drivers/interconnect/core.c
> > +++ b/drivers/interconnect/core.c
> > @@ -330,7 +330,7 @@ EXPORT_SYMBOL_GPL(of_icc_xlate_onecell);
> >   * Returns a valid pointer to struct icc_node on success or ERR_PTR()
> >   * on failure.
> >   */
> > -static struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec)
> > +struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec)
> >  {
> >  	struct icc_node *node = ERR_PTR(-EPROBE_DEFER);
> >  	struct icc_provider *provider;
> > @@ -349,6 +349,7 @@ static struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec)
> >  
> >  	return node;
> >  }
> > +EXPORT_SYMBOL_GPL(of_icc_get_from_provider);
> >  
> >  /**
> >   * of_icc_get() - get a path handle from a DT node based on name
> > diff --git a/include/linux/interconnect-provider.h b/include/linux/interconnect-provider.h
> > index 0c494534b4d3..cc965b8fab53 100644
> > --- a/include/linux/interconnect-provider.h
> > +++ b/include/linux/interconnect-provider.h
> > @@ -103,6 +103,7 @@ void icc_node_del(struct icc_node *node);
> >  int icc_nodes_remove(struct icc_provider *provider);
> >  int icc_provider_add(struct icc_provider *provider);
> >  int icc_provider_del(struct icc_provider *provider);
> > +struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec);
> >  
> >  #else
> >  
> > @@ -154,6 +155,11 @@ static inline int icc_provider_del(struct icc_provider *provider)
> >  	return -ENOTSUPP;
> >  }
> >  
> > +struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec)
> 
> Please make this static inline, as we may see a warning in some configurations:

Sure, will fix.

> In file included from drivers/devfreq/exynos-bus.c:18:
> ./include/linux/interconnect-provider.h:160:18: warning: no previous prototype
> for ‘of_icc_get_from_provider’ [-Wmissing-prototypes]
>   160 | struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec)
>       |                  ^~~~~~~~~~~~~~~~~~~~~~~~
> 
> > +{
> > +	return ERR_PTR(-ENOTSUPP);
> > +}
> > +
> >  #endif /* CONFIG_INTERCONNECT */
> >  
> >  #endif /* __LINUX_INTERCONNECT_PROVIDER_H */
> > 

-- 
Artur Świgoń
Samsung R&D Institute Poland
Samsung Electronics