linux-kernel - RE: [PATCH 1/2] lp855x_bl: use generic PWM functions

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Date:	Fri, 19 Oct 2012 08:45:14 +0000
From:	"Kim, Milo" <Milo.Kim@...com>
To:	Thierry Reding <thierry.reding@...onic-design.de>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Richard Purdie <rpurdie@...ys.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 1/2] lp855x_bl: use generic PWM functions

> Generally this looks good. Obviously you'll need to update any users of
> this driver as well. It might make sense to include those changes in
> this patch to avoid interim build failures.

Thanks for your review.
So far no usages for this driver in the mainline.
I've tested it in my own development environment instead.

> Other than that I have just one smaller comment below.
> 
> > +	pwm_config(lp->pwm, duty, period);
> > +	duty == 0 ? pwm_disable(lp->pwm) : pwm_enable(lp->pwm);
> 
> This is really ugly and should be written explicitly:
> 
> 	if (duty == 0)
> 		pwm_disable(lp->pwm);
> 	else
> 		pwm_enable(lp->pwm);

Oh, I prefer using '?' to if-sentence because it looks clear to me.
But if it's difficult to read/understand, I'll fix it.
I'd like to have others' opinion.

Thank you

Best Regards,
Milo 
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