linux-kernel - [PATCH 3/7] dwc3: dwc3-keystone: fix error return code

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Message-Id: <1416504842-18548-4-git-send-email-Julia.Lawall@lip6.fr>
Date:	Thu, 20 Nov 2014 18:33:58 +0100
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Felipe Balbi <balbi@...com>
Cc:	kernel-janitors@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/7] dwc3: dwc3-keystone: fix error return code

From: Julia Lawall <Julia.Lawall@...6.fr>

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>

---
The patches in this series are independent of each other.

 drivers/usb/dwc3/dwc3-keystone.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/dwc3/dwc3-keystone.c b/drivers/usb/dwc3/dwc3-keystone.c
index dd8d2df..fe3b933 100644
--- a/drivers/usb/dwc3/dwc3-keystone.c
+++ b/drivers/usb/dwc3/dwc3-keystone.c
@@ -123,6 +123,7 @@ static int kdwc3_probe(struct platform_device *pdev)
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
 		dev_err(&pdev->dev, "missing irq\n");
+		error = irq;
 		goto err_irq;
 	}
 

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