Message-ID: <54595ED7.2090406@codeaurora.org>
Date: Tue, 04 Nov 2014 17:18:47 -0600
From: Timur Tabi <timur@codeaurora.org>
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To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
CC: Mika Westerberg <mika.westerberg@linux.intel.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        Alexandre Courbot <gnurou@gmail.com>,
        Heikki Krogerus <heikki.krogerus@linux.intel.com>,
        Mathias Nyman <mathias.nyman@linux.intel.com>,
        Ning Li <ning.li@intel.com>, Alan Cox <alan@linux.intel.com>,
        lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 0/2] pinctrl: Intel Cherryview/Braswell support
References: <1415012493-134561-1-git-send-email-mika.westerberg@linux.intel.com> <54595416.1020205@codeaurora.org> <54595590.7080603@codeaurora.org> <3210901.7DuAVnBdHS@vostro.rjw.lan> <545959A8.7010305@codeaurora.org>
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On 11/04/2014 04:56 PM, Timur Tabi wrote:
>
>  >  I'm
>> not sure how much of that code can be shared between DT and ACPI ATM, but
>> it looks like at least some of it can be shared.
>
> So ACPI does not support the concept if variable length properties?

Ah, I see that it does:

int acpi_dev_prop_read_array(struct acpi_device *adev, const char *propname,
			     enum dev_prop_type proptype, void *val,
			     size_t nval)
{
...
	if (!val)
		return obj->package.count;


If I pass NULL for 'val', it returns the number of items.

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