linux-kernel - Re: [PATCH] mfd: max77620: Fix FPS switch statements

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Date:	Mon, 6 Jun 2016 17:32:16 +0200
From:	Thierry Reding <thierry.reding@...il.com>
To:	Lee Jones <lee.jones@...aro.org>
Cc:	Rhyland Klein <rklein@...dia.com>,
	Laxman Dewangan <ldewangan@...dia.com>,
	linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mfd: max77620: Fix FPS switch statements

On Tue, May 31, 2016 at 08:30:22AM +0100, Lee Jones wrote:
> On Fri, 27 May 2016, Rhyland Klein wrote:
> 
> > On 5/12/2016 1:52 PM, Laxman Dewangan wrote:
> > > 
> > > On Thursday 12 May 2016 11:15 PM, Rhyland Klein wrote:
> > >> When configuring FPS during probe, assuming a DT node is present for
> > >> FPS, the code can run into a problem with the switch statements in
> > >> max77620_config_fps() and max77620_get_fps_period_reg_value(). Namely,
> > >> in the case of chip->chip_id == MAX77620, it will set
> > >> fps_[mix|max]_period but then fall through to the default switch case
> > >> and return -EINVAL. Returning this from max77620_config_fps() will
> > >> cause probe to fail.
> > >>
> > > 
> > > Thanks for fixes.
> > > Missed when converting if-else to switch.
> > > 
> > > Reviewed-by: Laxman Dewangan <ldewangan@...dia.com>
> > > 
> > 
> > Lee, I noticed this hasn't been merged yet, but without it platforms
> > using the max77620 can easily (if it has FPS nodes) fail to probe. Is
> > there anything blocking it?
> 
> Yes, it was sent too late in the cycle.

Can we still have this for v4.7? It's clearly -rc material.

Reviewed-by: Thierry Reding <treding@...dia.com>
Tested-by: Thierry Reding <treding@...dia.com>

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