linux-kernel - [PATCH 10/25] usb: gadget: fix error return code

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Message-Id: <1388357260-4843-11-git-send-email-Julia.Lawall@lip6.fr>
Date:	Sun, 29 Dec 2013 23:47:25 +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-kernel@...r.kernel.org
Subject: [PATCH 10/25] usb: gadget: fix error return code

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

Set the return variable to an error code as done 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: Julia Lawall <Julia.Lawall@...6.fr>

---
Not tested.

 drivers/usb/gadget/printer.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c
index bf7a56b..92b55bd 100644
--- a/drivers/usb/gadget/printer.c
+++ b/drivers/usb/gadget/printer.c
@@ -1133,6 +1133,7 @@ static int __init printer_bind_config(struct usb_configuration *c)
 				  NULL, "g_printer");
 	if (IS_ERR(dev->pdev)) {
 		ERROR(dev, "Failed to create device: g_printer\n");
+		status = PTR_ERR(dev->pdev);
 		goto fail;
 	}
 

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