linux-kernel - Re: [PATCH v2 5/8] pinctrl: Add core support for Aspeed SoCs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1471919451.5707.89.camel@aj.id.au>
Date:   Tue, 23 Aug 2016 12:00:51 +0930
From:   Andrew Jeffery <andrew@...id.au>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Joel Stanley <joel@....id.au>,
        Alexandre Courbot <gnurou@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Jeremy Kerr <jk@...abs.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v2 5/8] pinctrl: Add core support for Aspeed SoCs

On Mon, 2016-08-22 at 15:45 +0200, Linus Walleij wrote:
> On Fri, Aug 19, 2016 at 2:44 PM, Andrew Jeffery <andrew@...id.au> wrote:
> 
> > 
> > +++ b/drivers/pinctrl/aspeed/Kconfig
> > @@ -0,0 +1,8 @@
> > +config PINCTRL_ASPEED
> > +       bool
> > +       depends on (ARCH_ASPEED || COMPILE_TEST) && OF
> > +       select PINMUX
> > +       select PINCONF
> > +       select GENERIC_PINCONF
> > +       select MFD_SYSCON
> > +       select REGMAP_MMIO
> Since this device is spawn from the syscon, should it not be
> "depends on MFD_SYSCON"?
> 
> (No big deal, if you think this is right then go with it.)

I think that's a fair point, I will look at rearranging it.

> 
> > 
> > +#include 
> What is this include for?

Cruft from past iterations. Will remove.

> 
> > 
> > +#include 
> > +#include 
> > +#include 
> > +#include 
> > +#include "../core.h"
> > +#include "pinctrl-aspeed.h"
> No #include ?
> 
> Maybe some #includes are centralized to pinctrl-aspeed.h
> I don't know, just make sure you don't have implicit includes.

linux/regmap.h is included in pinctrl-aspeed.h

> 
> > 
> > +               if (regmap_read(map, desc->reg, &val) < 0)
> > +                       return false;
> > +
> > +               val &= ~desc->mask;
> > +               val |= pattern << __ffs(desc->mask);
> > +
> > +               if (regmap_write(map, desc->reg, val) < 0)
> > +                       return false;
> Use:
> 
> regmap_update_bits(map,
>                               desc->reg,
>                               desc->mask,
>                               pattern << __ffs->desc->mask);
> 
> Or something like that instead of reimplementing
> mask-and-set. Regmap already knows how to do the
> business.
> 
> (Applied everywhere in the driver where you have a
> mask-and-set like this).

Right, I will clean that up.

> 
> The expression core engine is still a complete mystery
> for me, I will just trust you that it works as intended.

Gah! However, thanks!

I will clean up the issues above and re-send.

Cheers,

Andrew
Download attachment "signature.asc" of type "application/pgp-signature" (820 bytes)