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Date: Wed, 22 Jun 2016 13:46:48 -0700
From: Brian Norris <briannorris@chromium.org>
To: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
        Thierry Reding <thierry.reding@gmail.com>,
        Linux PWM List <linux-pwm@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Brian Norris <computersforpeace@gmail.com>,
        Doug Anderson <dianders@chromium.org>,
        linux-renesas-soc@vger.kernel.org,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Subject: Re: [PATCH v2] pwm: improve args checking in pwm_apply_state()
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On Wed, Jun 22, 2016 at 10:41:14PM +0200, Boris Brezillon wrote:
> On Wed, 22 Jun 2016 12:16:59 -0700
> Brian Norris <briannorris@chromium.org> wrote:
> > Notably, you're dropping the 'if (!pwm) { }' safety checks that are part
> > of pwm_disable() and pwm_set_polarity(). But I don't think there should
> > be any users relying on that.
> 
> Indeed. I can add it back here if you prefer,

Nah, that's ok. I just had to say it anyway :)

> but honestly, PWM users
> that are not checking the value returned by pwm_get() should be
> considered buggy IMHO, and a NULL pointer exception is a good way to
> make people realize they are not properly using the API :).

Seems OK.

Brian