linux-kernel - [PATCH 3/3] drivers/net/irda: fix error return code

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 17 Aug 2012 09:46:58 +0200
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Samuel Ortiz <samuel@...tiz.org>
Cc:	kernel-janitors@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] drivers/net/irda: fix error return code

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

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>
@@
identifier ret;
expression e1,e2;
@@

if (ret < 0)
 { ... return ret; }
 ... when != ret = e1
     when forall
*if(...)
 {
  ... when != ret = e2
* return ret;
 }
// </smpl>

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

---
 drivers/net/irda/ks959-sir.c    |    1 +
 drivers/net/irda/ksdazzle-sir.c |    1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/net/irda/ks959-sir.c b/drivers/net/irda/ks959-sir.c
index 824e2a9..5f3aeac 100644
--- a/drivers/net/irda/ks959-sir.c
+++ b/drivers/net/irda/ks959-sir.c
@@ -542,6 +542,7 @@ static int ks959_net_open(struct net_device *netdev)
 	sprintf(hwname, "usb#%d", kingsun->usbdev->devnum);
 	kingsun->irlap = irlap_open(netdev, &kingsun->qos, hwname);
 	if (!kingsun->irlap) {
+		err = -ENOMEM;
 		dev_err(&kingsun->usbdev->dev, "irlap_open failed\n");
 		goto free_mem;
 	}
diff --git a/drivers/net/irda/ksdazzle-sir.c b/drivers/net/irda/ksdazzle-sir.c
index 5a278ab..2d4b6a1 100644
--- a/drivers/net/irda/ksdazzle-sir.c
+++ b/drivers/net/irda/ksdazzle-sir.c
@@ -436,6 +436,7 @@ static int ksdazzle_net_open(struct net_device *netdev)
 	sprintf(hwname, "usb#%d", kingsun->usbdev->devnum);
 	kingsun->irlap = irlap_open(netdev, &kingsun->qos, hwname);
 	if (!kingsun->irlap) {
+		err = -ENOMEM;
 		dev_err(&kingsun->usbdev->dev, "irlap_open failed\n");
 		goto free_mem;
 	}

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/