linux-kernel - [PATCH 5/6] drivers/staging/crystalhd/crystalhd_lnx.c: adjust inconsistent IS_ERR and PTR

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Date:	Sat, 25 Aug 2012 21:57:08 +0200
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Naren Sankar <nsankar@...adcom.com>
Cc:	kernel-janitors@...r.kernel.org, Jarod Wilson <jarod@...sonet.com>,
	Scott Davilla <davilla@....com>,
	Manu Abraham <abraham.manu@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH 5/6] drivers/staging/crystalhd/crystalhd_lnx.c: adjust inconsistent IS_ERR and PTR_ERR

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

Change the call to PTR_ERR to access the value just tested by IS_ERR.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression e,e1;
@@

(
if (IS_ERR(e)) { ... PTR_ERR(e) ... }
|
if (IS_ERR(e=e1)) { ... PTR_ERR(e) ... }
|
*if (IS_ERR(e))
 { ...
*  PTR_ERR(e1)
   ... }
)
// </smpl>

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

---
 drivers/staging/crystalhd/crystalhd_lnx.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/crystalhd/crystalhd_lnx.c b/drivers/staging/crystalhd/crystalhd_lnx.c
index 5909d8d..166203a 100644
--- a/drivers/staging/crystalhd/crystalhd_lnx.c
+++ b/drivers/staging/crystalhd/crystalhd_lnx.c
@@ -381,7 +381,7 @@ static int __devinit chd_dec_init_chdev(struct crystalhd_adp *adp)
 	dev = device_create(crystalhd_class, NULL, MKDEV(adp->chd_dec_major, 0),
 			    NULL, "crystalhd");
 	if (IS_ERR(dev)) {
-		rc = PTR_ERR(crystalhd_class);
+		rc = PTR_ERR(dev);
 		BCMLOG_ERR("failed to create device\n");
 		goto device_create_fail;
 	}

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