From e28045ab2e2a8e27d08275bf70be33868beba8fd Mon Sep 17 00:00:00 2001
From: Zhouyi Zhou <zhouzhouyi@gmail.com>
Date: Wed, 5 Mar 2014 18:20:19 +0800
Subject: [PATCH] iommu/omap: Check for NULL in iopte_free()

The iopte_free() function should check for NULL because
kmem_cache_free() will panic on NULL argument.

Signed-off-by: Zhouyi Zhou <yizhouzhou@ict.ac.cn>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
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Reading git-format-patch failed