linux-kernel - Fwd: [PATCH 2/14] drivers/media/platform/soc_camera/mx2

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Date:	Sun, 23 Sep 2012 16:34:57 -0300
From:	Mauro Carvalho Chehab <mchehab@...hat.com>
To:	Guennadi Liakhovetski <g.liakhovetski@....de>,
	kernel-janitors@...r.kernel.org, Julia.Lawall@...6.fr,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
	Peter Senna Tschudin <peter.senna@...il.com>
Subject: Fwd: [PATCH 2/14] drivers/media/platform/soc_camera/mx2_camera.c:
 fix error return code

Please review,

Regards,
Mauro.


-------- Mensagem original --------
Assunto: [PATCH 2/14] drivers/media/platform/soc_camera/mx2_camera.c: fix error return code
Data: Thu,  6 Sep 2012 17:23:59 +0200
De: Peter Senna Tschudin <peter.senna@...il.com>
Para: Mauro Carvalho Chehab <mchehab@...radead.org>
CC: kernel-janitors@...r.kernel.org, Julia.Lawall@...6.fr, linux-media@...r.kernel.org, linux-kernel@...r.kernel.org

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/media/platform/soc_camera/mx2_camera.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/soc_camera/mx2_camera.c b/drivers/media/platform/soc_camera/mx2_camera.c
index 256187f..f8884a7 100644
--- a/drivers/media/platform/soc_camera/mx2_camera.c
+++ b/drivers/media/platform/soc_camera/mx2_camera.c
@@ -1800,13 +1800,16 @@ static int __devinit mx2_camera_probe(struct platform_device *pdev)
 
 		if (!res_emma || !irq_emma) {
 			dev_err(&pdev->dev, "no EMMA resources\n");
+			err = -ENODEV;
 			goto exit_free_irq;
 		}
 
 		pcdev->res_emma = res_emma;
 		pcdev->irq_emma = irq_emma;
-		if (mx27_camera_emma_init(pcdev))
+		if (mx27_camera_emma_init(pcdev)) {
+			err = -ENODEV;
 			goto exit_free_irq;
+		}
 	}
 
 	pcdev->soc_host.drv_name	= MX2_CAM_DRV_NAME,

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