linux-kernel - [PATCH 1/2] staging: rtl8188eu: fix usage of uninit scalar in rtw_drv

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Date:	Sat, 17 May 2014 12:38:57 +0200
From:	Christian Engelmayer <cengelma@....at>
To:	devel@...verdev.osuosl.org
Cc:	gregkh@...uxfoundation.org, Larry.Finger@...inger.net,
	navin.patidar@...il.com, Jes.Sorensen@...hat.com,
	linux-kernel@...r.kernel.org,
	Christian Engelmayer <cengelma@....at>
Subject: [PATCH 1/2] staging: rtl8188eu: fix usage of uninit scalar in rtw_drv_init()

Function rtw_drv_init() is written in a way that assumes 'status' != _SUCCESS
as long as not explicitly set. Thus initialize 'status' to FAIL, in order to
prevent undefined behaviour if going through the exit paths. Detected by
Coverity - CID 1077832.

Signed-off-by: Christian Engelmayer <cengelma@....at>
---
 drivers/staging/rtl8188eu/os_dep/usb_intf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/rtl8188eu/os_dep/usb_intf.c b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
index 8ed2ac8..632a5b0a 100644
--- a/drivers/staging/rtl8188eu/os_dep/usb_intf.c
+++ b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
@@ -685,7 +685,7 @@ static void rtw_usb_if1_deinit(struct adapter *if1)
 static int rtw_drv_init(struct usb_interface *pusb_intf, const struct usb_device_id *pdid)
 {
 	struct adapter *if1 = NULL;
-	int status;
+	int status = _FAIL;
 	struct dvobj_priv *dvobj;
 
 	RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+rtw_drv_init\n"));
-- 
1.9.1

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