linux-kernel - [PATCH] staging: r8188eu: handle rtw_init_netdev

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Message-Id: <20220116192611.19224-1-makvihas@gmail.com>
Date:   Mon, 17 Jan 2022 00:56:11 +0530
From:   Vihas Mak <makvihas@...il.com>
To:     Larry.Finger@...inger.net, phil@...lpotter.co.uk,
        gregkh@...uxfoundation.org, martin@...ser.cx,
        straube.linux@...il.com
Cc:     linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Vihas Mak <makvihas@...il.com>
Subject: [PATCH] staging: r8188eu: handle rtw_init_netdev_name() failure appropriately

rtw_init_netdev_name() calls dev_alloc_name() which allocates the name
for the device as per the given name format.
It returns a negative err code if the format is invalid. Currently the
name format is specified by the module parameter "ifname".
Warn the user if "ifname" is invalid.

Signed-off-by: Vihas Mak <makvihas@...il.com>
---
 drivers/staging/r8188eu/os_dep/usb_intf.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/r8188eu/os_dep/usb_intf.c b/drivers/staging/r8188eu/os_dep/usb_intf.c
index 91792dfd3..875815b5e 100644
--- a/drivers/staging/r8188eu/os_dep/usb_intf.c
+++ b/drivers/staging/r8188eu/os_dep/usb_intf.c
@@ -399,7 +399,10 @@ static struct adapter *rtw_usb_if1_init(struct dvobj_priv *dvobj,
 			DBG_88E("can't get autopm:\n");
 
 	/*  alloc dev name after read efuse. */
-	rtw_init_netdev_name(pnetdev, padapter->registrypriv.ifname);
+	if (rtw_init_netdev_name(pnetdev, padapter->registrypriv.ifname) < 0) {
+		DBG_88E("rtw_init_netdev_name failed, ifname:%s\n",
+			padapter->registrypriv.ifname);
+	}
 	rtw_macaddr_cfg(padapter->eeprompriv.mac_addr);
 	rtw_init_wifidirect_addrs(padapter, padapter->eeprompriv.mac_addr,
 				  padapter->eeprompriv.mac_addr);
-- 
2.30.2