linux-kernel - [PATCH 4/4] drivers/crypto/tegra-aes.c: fix error return code

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Message-Id: <1347902908-19006-4-git-send-email-peter.senna@gmail.com>
Date:	Mon, 17 Sep 2012 19:28:28 +0200
From:	Peter Senna Tschudin <peter.senna@...il.com>
To:	<herbert@...dor.apana.org.au>
Cc:	davem@...emloft.net, linux-crypto@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
	Peter Senna Tschudin <peter.senna@...il.com>
Subject: [PATCH 4/4] drivers/crypto/tegra-aes.c: fix error return code

From: Peter Senna Tschudin <peter.senna@...il.com>

Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@...il.com>
---
 drivers/crypto/tegra-aes.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/crypto/tegra-aes.c b/drivers/crypto/tegra-aes.c
index 631149e5..37185e6 100644
--- a/drivers/crypto/tegra-aes.c
+++ b/drivers/crypto/tegra-aes.c
@@ -969,6 +969,7 @@ static int tegra_aes_probe(struct platform_device *pdev)
 	aes_wq = alloc_workqueue("tegra_aes_wq", WQ_HIGHPRI | WQ_UNBOUND, 1);
 	if (!aes_wq) {
 		dev_err(dev, "alloc_workqueue failed\n");
+		err = -ENOMEM;
 		goto out;
 	}
 
-- 
1.7.11.4

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