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Date: Mon, 2 Dec 2013 18:29:41 +0800 From: Zhouyi Zhou <zhouzhouyi@...il.com> To: <joro@...tes.org>, <iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org> Cc: Zhouyi Zhou <yizhouzhou@....ac.cn> Subject: [PATCH 1/1] NULL return of kmem_cache_zalloc should be handled if iopte is NULL, iopte_free should not be called. Signed-off-by: Zhouyi Zhou <yizhouzhou@....ac.cn> --- drivers/iommu/omap-iommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index bcd78a7..5155714 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -551,7 +551,8 @@ static u32 *iopte_alloc(struct omap_iommu *obj, u32 *iopgd, u32 da) dev_vdbg(obj->dev, "%s: a new pte:%p\n", __func__, iopte); } else { /* We raced, free the reduniovant table */ - iopte_free(iopte); + if (iopte) + iopte_free(iopte); } pte_ready: -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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