linux-kernel - [PATCH 2/16] [media] si4713: fix error return code

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Date:	Sun,  5 Apr 2015 14:06:22 +0200
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Eduardo Valentin <edubezval@...il.com>
Cc:	kernel-janitors@...r.kernel.org,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/16] [media] si4713: fix error return code

Return a negative error code on failure.

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

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

Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
 drivers/media/radio/si4713/si4713.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/radio/si4713/si4713.c b/drivers/media/radio/si4713/si4713.c
index c90004d..c4e1d6c 100644
--- a/drivers/media/radio/si4713/si4713.c
+++ b/drivers/media/radio/si4713/si4713.c
@@ -1615,8 +1615,10 @@ static int si4713_probe(struct i2c_client *client,
 		return 0;
 
 	si4713_pdev = platform_device_alloc("radio-si4713", -1);
-	if (!si4713_pdev)
+	if (!si4713_pdev) {
+		rval = -ENOMEM;
 		goto put_main_pdev;
+	}
 
 	si4713_pdev_pdata.subdev = client;
 	rval = platform_device_add_data(si4713_pdev, &si4713_pdev_pdata,

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