From 8b17e0559fe728b89b45f4d88b4b30b498862709 Mon Sep 17 00:00:00 2001
From: Hui Wang <jason77.wang@gmail.com>
Date: Fri, 13 Jul 2012 10:51:29 +0800
Subject: [PATCH] spi/imx: use gpio_is_valid to determine if a gpio is valid

Use gpio_is_valid() to replace "gpio >= 0" or "gpio < 0".

Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Hui Wang <jason77.wang@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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