Re: [Intel-gfx] [PATCH 1/8] gpiolib: Add support for removing registered consumer lookup table

From: Daniel Vetter <daniel@ffwll.ch>
To: Lee Jones <lee.jones@linaro.org>
Cc: Shobhit Kumar <shobhit.kumar@intel.com>,
	linux-pwm <linux-pwm@vger.kernel.org>,
	Jani Nikula <jani.nikula@intel.com>,
	Samuel Ortiz <sameo@linux.intel.com>,
	Alexandre Courbot <gnurou@gmail.com>,
	David Airlie <airlied@linux.ie>,
	Povilas Staniulis <wdmonster@gmail.com>,
	intel-gfx <intel-gfx@lists.freedesktop.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	linux-gpio <linux-gpio@vger.kernel.org>,
	Chih-Wei Huang <cwhuang@android-x86.org>,
	Thierry Reding <thierry.reding@gmail.com>,
	Daniel Vetter <daniel.vetter@intel.com>,
	Linus Walleij <linus.walleij@linaro.org>
Subject: Re: [Intel-gfx] [PATCH 1/8] gpiolib: Add support for removing registered consumer lookup table
Date: Tue, 5 May 2015 17:44:59 +0200	[thread overview]
Message-ID: <20150505154459.GC30184@phenom.ffwll.local> (raw)
In-Reply-To: <20150505104505.GZ4047@x1>

On Tue, May 05, 2015 at 11:45:05AM +0100, Lee Jones wrote:
> This is not how we submit subsequent patch-sets.

It is unfortunately how we handle patches on dri-devel&intel-gfx to be
able to cope with massive mail load. If everyone who submits to intel-gfx
would always resend the entire series for minor updates of som patches
we'd completely drown in the resulting flood.

> Please submit them as a whole, seperately from the first submission
> and with versioning information i.e. [PATCH v2 X/Y] Stuff ...
> 
> > In case we unload and load a driver module again that is registering a
> > lookup table, without this it will result in multiple entries. Provide
> > an option to remove the lookup table on driver unload
> > 
> > v2: Ccing maintainers
> > v3: Correct the subject line (Lee jones)
> 
> Change logs should go underneth the '---' and above the diffstat found
> below.

Again just style differences between subsystems, I generally want to have
those above the ---.
-Daniel
> 
> > Cc: Samuel Ortiz <sameo@linux.intel.com>
> > Cc: Linus Walleij <linus.walleij@linaro.org>
> > Cc: Alexandre Courbot <gnurou@gmail.com>
> > Cc: Thierry Reding <thierry.reding@gmail.com>
> > Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
> > Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
> > ---
> >  drivers/gpio/gpiolib.c       | 13 +++++++++++++
> >  include/linux/gpio/machine.h |  1 +
> >  2 files changed, 14 insertions(+)
> > 
> > diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
> > index 59eaa23..2420af9 100644
> > --- a/drivers/gpio/gpiolib.c
> > +++ b/drivers/gpio/gpiolib.c
> > @@ -1658,6 +1658,19 @@ void gpiod_add_lookup_table(struct gpiod_lookup_table *table)
> >  	mutex_unlock(&gpio_lookup_lock);
> >  }
> >  
> > +/**
> > + * gpiod_remove_lookup_table() - unregister GPIO device consumers
> > + * @table: table of consumers to unregister
> > + */
> > +void gpiod_remove_lookup_table(struct gpiod_lookup_table *table)
> > +{
> > +	mutex_lock(&gpio_lookup_lock);
> > +
> > +	list_del(&table->list);
> > +
> > +	mutex_unlock(&gpio_lookup_lock);
> > +}
> > +
> >  static struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id,
> >  				      unsigned int idx,
> >  				      enum gpio_lookup_flags *flags)
> > diff --git a/include/linux/gpio/machine.h b/include/linux/gpio/machine.h
> > index e270614..c0d712d 100644
> > --- a/include/linux/gpio/machine.h
> > +++ b/include/linux/gpio/machine.h
> > @@ -57,5 +57,6 @@ struct gpiod_lookup_table {
> >  }
> >  
> >  void gpiod_add_lookup_table(struct gpiod_lookup_table *table);
> > +void gpiod_remove_lookup_table(struct gpiod_lookup_table *table);
> >  
> >  #endif /* __LINUX_GPIO_MACHINE_H */
> 
> -- 
> Lee Jones
> Linaro STMicroelectronics Landing Team Lead
> Linaro.org │ Open source software for ARM SoCs
> Follow Linaro: Facebook | Twitter | Blog
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch