linux-kernel - Re: [PATCH v3] gpiolib: Export gpiochip_request_own_desc and gpiochip_free_own

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Message-ID: <CAAVeFu+oWYiKJsaqt6Gc3mzJqSReZpd4m-iJbvuoUGARdyr4xA@mail.gmail.com>
Date:	Wed, 23 Jul 2014 14:41:23 +0900
From:	Alexandre Courbot <gnurou@...il.com>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Randy Dunlap <rdunlap@...radead.org>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>
Subject: Re: [PATCH v3] gpiolib: Export gpiochip_request_own_desc and gpiochip_free_own_desc

On Wed, Jul 23, 2014 at 12:01 AM, Guenter Roeck <linux@...ck-us.net> wrote:
> Both functions were introduced to let gpio drivers request their own
> gpio pins. Without exporting the functions, this can however only be
> used by gpio drivers built into the kernel.
>
> Secondary impact is that the functions can not currently be used by
> platform initialization code associated with the gpio-pca953x driver.
> This code permits auto-export of gpio pins through platform data, but
> if this functionality is used, the module can no longer be unloaded due
> to the problem solved with the introduction of gpiochip_request_own_desc
> and gpiochip_free_own_desc.
>
> Export both function so they can be used from modules and from
> platform initialization code.
>
> Cc: Mika Westerberg <mika.westerberg@...ux.intel.com>
> Signed-off-by: Guenter Roeck <linux@...ck-us.net>

Makes sense to have them there.

Reviewed-by: Alexandre Courbot <acourbot@...dia.com>
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