linux-kernel - [PATCH 2/5] drivers/media/platform/s5p-tv/sdo

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Date:	Tue,  4 Sep 2012 18:14:28 +0200
From:	Peter Senna Tschudin <peter.senna@...il.com>
To:	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
Subject: [PATCH 2/5] drivers/media/platform/s5p-tv/sdo_drv.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/media/platform/s5p-tv/sdo_drv.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/media/platform/s5p-tv/sdo_drv.c b/drivers/media/platform/s5p-tv/sdo_drv.c
index ad68bbe..58cf56d 100644
--- a/drivers/media/platform/s5p-tv/sdo_drv.c
+++ b/drivers/media/platform/s5p-tv/sdo_drv.c
@@ -369,6 +369,7 @@ static int __devinit sdo_probe(struct platform_device *pdev)
 	sdev->fout_vpll = clk_get(dev, "fout_vpll");
 	if (IS_ERR_OR_NULL(sdev->fout_vpll)) {
 		dev_err(dev, "failed to get clock 'fout_vpll'\n");
+		ret = -ENODEV;
 		goto fail_dacphy;
 	}
 	dev_info(dev, "fout_vpll.rate = %lu\n", clk_get_rate(sclk_vpll));
@@ -377,11 +378,13 @@ static int __devinit sdo_probe(struct platform_device *pdev)
 	sdev->vdac = devm_regulator_get(dev, "vdd33a_dac");
 	if (IS_ERR_OR_NULL(sdev->vdac)) {
 		dev_err(dev, "failed to get regulator 'vdac'\n");
+		ret = -ENODEV;
 		goto fail_fout_vpll;
 	}
 	sdev->vdet = devm_regulator_get(dev, "vdet");
 	if (IS_ERR_OR_NULL(sdev->vdet)) {
 		dev_err(dev, "failed to get regulator 'vdet'\n");
+		ret = -ENODEV;
 		goto fail_fout_vpll;
 	}
 

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