linux-kernel - Re: [PATCH v4] input: pxrc: new driver for PhoenixRC Flight Controller Adapter

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Date:   Wed, 17 Jan 2018 20:45:16 +0100
From:   Marcus Folkesson <marcus.folkesson@...il.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Jonathan Corbet <corbet@....net>,
        Tomohiro Yoshidomi <sylph23k@...il.com>,
        David Herrmann <dh.herrmann@...il.com>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-input@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] input: pxrc: new driver for PhoenixRC Flight
 Controller Adapter

Hi Randy!

On Wed, Jan 17, 2018 at 11:13:43AM -0800, Randy Dunlap wrote:
> On 01/17/2018 11:07 AM, Marcus Folkesson wrote:
> > This driver let you plug in your RC controller to the adapter and
> > use it as input device in various RC simulators.
> > 
> > Signed-off-by: Marcus Folkesson <marcus.folkesson@...il.com>
> > ---
> 
> > diff --git a/drivers/input/joystick/Kconfig b/drivers/input/joystick/Kconfig
> > index f3c2f6ea8b44..18ab6dafff41 100644
> > --- a/drivers/input/joystick/Kconfig
> > +++ b/drivers/input/joystick/Kconfig
> > @@ -351,4 +351,13 @@ config JOYSTICK_PSXPAD_SPI_FF
> >  
> >  	  To drive rumble motor a dedicated power supply is required.
> >  
> > +config JOYSTICK_PXRC
> > +	tristate "PhoenixRC Flight Controller Adapter"
> > +	depends on USB_ARCH_HAS_HCD
> > +	select USB
> 
> Drop the (first) depends and change "select USB" to "depends on USB".
> 
> Argh, there are lots of input/ drivers that do that.  That's bad/wrong.
> A driver should not select (enable) an entire subsystem.  If the user had
> the subsystem disabled, it should stay that way.
> 
> Dmitry, you can expect some patches...
> 

Hah, of course it should be "depends on" :-)
Other drivers fooled me...

Should I fix the other drivers too when I'm on it, or do you?


> > +	help
> > +	  Say Y here if you want to use the PhoenixRC Flight Controller Adapter.
> > +
> > +	  To compile this driver as a module, choose M here: the
> > +	  module will be called pxrc.
> >  endif
> 
> -- 
> ~Randy


Best regards
Marcus Folkesson

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