From 12dcee0e3cc22d4e0c6b380963dc9527cd558e7e Mon Sep 17 00:00:00 2001
From: Tadeusz Struk <tadeusz.struk@intel.com>
Date: Mon, 19 May 2014 09:51:33 -0700
Subject: crypto: testmgr - Fix DMA-API warning

With DMA-API debug enabled testmgr triggers a "DMA-API: device driver maps memory from stack" warning, when tested on a crypto HW accelerator.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit 9bac019dad8098a77cce555d929f678e22111783)
Change-Id: I709ed7e293287b840abb25de21cbe4b1732e8402
Reviewed-on: http://git.am.freescale.net:8181/17737
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Reviewed-by: Zhengxiong Jin <Jason.Jin@freescale.com>
Tested-by: Zhengxiong Jin <Jason.Jin@freescale.com>

diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index 117b312..71e61ac 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -422,16 +422,18 @@ static int __test_aead(struct crypto_aead *tfm, int enc,
 	void *input;
 	void *output;
 	void *assoc;
-	char iv[MAX_IVLEN];
+	char *iv;
 	char *xbuf[XBUFSIZE];
 	char *xoutbuf[XBUFSIZE];
 	char *axbuf[XBUFSIZE];
 
+	iv = kzalloc(MAX_IVLEN, GFP_KERNEL);
+	if (!iv)
+		return ret;
 	if (testmgr_alloc_buf(xbuf))
 		goto out_noxbuf;
 	if (testmgr_alloc_buf(axbuf))
 		goto out_noaxbuf;
-
 	if (diff_dst && testmgr_alloc_buf(xoutbuf))
 		goto out_nooutbuf;
 
@@ -775,6 +777,7 @@ out_nooutbuf:
 out_noaxbuf:
 	testmgr_free_buf(xbuf);
 out_noxbuf:
+	kfree(iv);
 	return ret;
 }
 
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