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Date:   Wed, 4 May 2022 15:52:48 +0300
From:   Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To:     Lee Jones <lee.jones@linaro.org>
Cc:     Wolfram Sang <wsa@kernel.org>, Jean Delvare <jdelvare@suse.de>,
        Heiner Kallweit <hkallweit1@gmail.com>,
        Hans de Goede <hdegoede@redhat.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        Tan Jui Nee <jui.nee.tan@intel.com>,
        Kate Hsuan <hpa@redhat.com>,
        Jonathan Yong <jonathan.yong@intel.com>,
        linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org,
        linux-i2c@vger.kernel.org, linux-gpio@vger.kernel.org,
        platform-driver-x86@vger.kernel.org,
        Borislav Petkov <bp@alien8.de>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Tony Luck <tony.luck@intel.com>,
        James Morse <james.morse@arm.com>,
        Robert Richter <rric@kernel.org>,
        Jean Delvare <jdelvare@suse.com>,
        Peter Tyser <ptyser@xes-inc.com>,
        Mika Westerberg <mika.westerberg@linux.intel.com>,
        Andy Shevchenko <andy@kernel.org>,
        Mark Gross <markgross@kernel.org>,
        Henning Schild <henning.schild@siemens.com>
Subject: Re: [PATCH v4 5/8] mfd: lpc_ich: Add support for pinctrl in non-ACPI
 system
Message-ID: <YnJ3IJoJtqjvFmBB@smile.fi.intel.com>
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 <YgvjDy1R06IC8FE5@google.com>
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Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo
Precedence: bulk

On Tue, Feb 15, 2022 at 05:29:51PM +0000, Lee Jones wrote:
> On Tue, 15 Feb 2022, Andy Shevchenko wrote:
> > On Tue, Feb 15, 2022 at 04:54:00PM +0000, Lee Jones wrote:
> > > On Mon, 31 Jan 2022, Andy Shevchenko wrote:

> > Thank you for the review, my answers below.

...

> > > > +static struct resource apl_gpio_resources[APL_GPIO_NR_DEVICES][2] = {
> > > > +	[APL_GPIO_NORTH] = {
> > > > +		DEFINE_RES_MEM(APL_GPIO_NORTH_OFFSET, 0x1000),
> > > 
> > > Are these 0x1000's being over-written in lpc_ich_init_pinctrl()?
> > > 
> > > If so, why pre-initialise?
> > 
> > You mean to pre-initialize the offsets, but leave the length to be added
> > in the function? It can be done, but it feels inconsistent, since we would
> > have offsets and lengths in different places for the same thingy. That said,
> > I prefer current way for the sake of consistency.
> 
> Don't you over-write this entry entirely?
> 
>   for (i = 0; i < ARRAY_SIZE(apl_gpio_devices); i++) {
>         struct resource *mem = &apl_gpio_resources[i][0];
> 
>         /* Fill MEM resource */
>         mem->start += base.start;
>         mem->end += base.start;
>         mem->flags = base.flags;
>   }
> 
> Oh wait, you're just adding the base value to the offsets.
> 
> In which case that comment is also confusing!

I have realised that in current form it has a bug (*), so I re-do a bit the way
that comment stays and the actual actions will be to *fill* the resource.

*) unbinding and binding back will bring us to the completely wrong resources.

-- 
With Best Regards,
Andy Shevchenko