linux-kernel - [PATCH v2 3/4] staging: rtl8712: check for return value of _r8712_init_xmit

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Message-Id: <b550803561acf26af71f2377215c28b94435a644.1666688642.git.namcaov@gmail.com>
Date:   Tue, 25 Oct 2022 11:12:25 +0200
From:   Nam Cao <namcaov@...il.com>
To:     Larry Finger <Larry.Finger@...inger.net>,
        Florian Schilhabel <florian.c.schilhabel@...glemail.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     namcaov@...il.com, Dan Carpenter <dan.carpenter@...cle.com>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: [PATCH v2 3/4] staging: rtl8712: check for return value of _r8712_init_xmit_priv()

The return value of _r8712_init_xmit_priv() is never checked and the driver
always continue execution as if all is well. This will cause problems
if, for example, buffers cannot be allocated and the driver continue and
use those buffers.

Check for return value of _r8712_init_xmit_priv() and return error (if any)
during probing.

Signed-off-by: Nam Cao <namcaov@...il.com>
---
 drivers/staging/rtl8712/os_intfs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/rtl8712/os_intfs.c b/drivers/staging/rtl8712/os_intfs.c
index 12adb470d216..205b7d66a40a 100644
--- a/drivers/staging/rtl8712/os_intfs.c
+++ b/drivers/staging/rtl8712/os_intfs.c
@@ -308,7 +308,9 @@ int r8712_init_drv_sw(struct _adapter *padapter)
 	ret = r8712_init_mlme_priv(padapter);
 	if (ret)
 		return ret;
-	_r8712_init_xmit_priv(&padapter->xmitpriv, padapter);
+	ret = _r8712_init_xmit_priv(&padapter->xmitpriv, padapter);
+	if (ret)
+		return ret;
 	ret = _r8712_init_recv_priv(&padapter->recvpriv, padapter);
 	if (ret)
 		return ret;
-- 
2.25.1