From mboxrd@z Thu Jan  1 00:00:00 1970
From: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Subject: Re: [PATCH v8 1/2] pwm: Imagination Technologies PWM DAC driver
Date: Mon, 12 Jan 2015 21:04:22 +0000
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Cc: Andrew Bresticker <abrestic@chromium.org>, Thierry Reding <thierry.reding@gmail.com>, James Hartley <james.hartley@imgtec.com>, Arnd Bergmann <arnd@arndb.de>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pwm@vger.kernel.org, vladimir_zapolskiy@mentor.com, Naidu Tellapati <naidu.tellapati@gmail.com>, Naidu Tellapati <Naidu.Tellapati@imgtec.com>, Sai Masarapu <Sai.Masarapu@imgtec.com>

> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

What if you've not been given a resource ?

Otherwise looks fine to me