linux-kernel - [PATCH v2] staging: r8188eu: keep the success path and error path separate

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-next>] [day] [month] [year] [list]

Date:   Thu, 10 Feb 2022 00:37:53 +0530
From:   Vihas Makwana <makvihas@...il.com>
To:     Larry Finger <Larry.Finger@...inger.net>,
        Phillip Potter <phil@...lpotter.co.uk>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Michael Straube <straube.linux@...il.com>,
        Martin Kaiser <martin@...ser.cx>
Cc:     Dan Carpenter <dan.carpenter@...cle.com>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Pavel Skripkin <paskripkin@...il.com>,
        Vihas Makwana <makvihas@...il.com>
Subject: [PATCH v2] staging: r8188eu: keep the success path and error path separate

Keep the success path and error path separate in rtw_usb_if1_init() and
drop the "status" variable.
Also, remove do-nothing gotos.

Signed-off-by: Vihas Makwana <makvihas@...il.com>
---
v1->v2:
    Just `return NULL` instead of `padapter=NULL/return padapter`
 drivers/staging/r8188eu/os_dep/usb_intf.c | 30 +++++++++--------------
 1 file changed, 12 insertions(+), 18 deletions(-)

diff --git a/drivers/staging/r8188eu/os_dep/usb_intf.c b/drivers/staging/r8188eu/os_dep/usb_intf.c
index 10c33e2ae..668e79a3c 100644
--- a/drivers/staging/r8188eu/os_dep/usb_intf.c
+++ b/drivers/staging/r8188eu/os_dep/usb_intf.c
@@ -336,13 +336,13 @@ static struct adapter *rtw_usb_if1_init(struct dvobj_priv *dvobj,
 {
 	struct adapter *padapter = NULL;
 	struct net_device *pnetdev = NULL;
-	int status = _FAIL;
 	struct io_priv *piopriv;
 	struct intf_hdl *pintf;
 
 	padapter = vzalloc(sizeof(*padapter));
 	if (!padapter)
-		goto exit;
+		return NULL;
+
 	padapter->dvobj = dvobj;
 	dvobj->if1 = padapter;
 
@@ -421,26 +421,20 @@ static struct adapter *rtw_usb_if1_init(struct dvobj_priv *dvobj,
 		, padapter->hw_init_completed
 	);
 
-	status = _SUCCESS;
+	return padapter;
 
 free_drv_sw:
-	if (status != _SUCCESS) {
-		rtw_cancel_all_timer(padapter);
-		rtw_free_drv_sw(padapter);
-	}
+	rtw_cancel_all_timer(padapter);
+	rtw_free_drv_sw(padapter);
 handle_dualmac:
-	if (status != _SUCCESS)
-		rtw_handle_dualmac(padapter, 0);
+	rtw_handle_dualmac(padapter, 0);
 free_adapter:
-	if (status != _SUCCESS) {
-		if (pnetdev)
-			rtw_free_netdev(pnetdev);
-		else if (padapter)
-			vfree(padapter);
-		padapter = NULL;
-	}
-exit:
-	return padapter;
+	if (pnetdev)
+		rtw_free_netdev(pnetdev);
+	else if (padapter)
+		vfree(padapter);
+
+	return NULL;
 }
 
 static void rtw_usb_if1_deinit(struct adapter *if1)
-- 
2.30.2