From: Hannes Reinecke <hare@suse.de>
Date: Wed, 6 Feb 2013 08:50:10 +0000 (+0100)
Subject: iommu/vt-d: Zero out allocated memory in dmar_enable_qi
X-Git-Tag: v3.9-rc1~73^2^7
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=37a407101e08e444a193837a1e1d4f6f66c8dad4;p=profile%2Fivi%2Fkernel-x86-ivi.git

iommu/vt-d: Zero out allocated memory in dmar_enable_qi

kmemcheck complained about the use of uninitialized memory.
Fix by using kzalloc instead of kmalloc.

Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
---

diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 86e2f4a..2623a57 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -1040,7 +1040,7 @@ int dmar_enable_qi(struct intel_iommu *iommu)
 
 	qi->desc = page_address(desc_page);
 
-	qi->desc_status = kmalloc(QI_LENGTH * sizeof(int), GFP_ATOMIC);
+	qi->desc_status = kzalloc(QI_LENGTH * sizeof(int), GFP_ATOMIC);
 	if (!qi->desc_status) {
 		free_page((unsigned long) qi->desc);
 		kfree(qi);