linux-kernel - [PATCH net] r8152: fix unknown device for choose

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Message-ID: <20240308075206.33553-436-nic_swsd@realtek.com>
Date: Fri, 8 Mar 2024 15:52:06 +0800
From: Hayes Wang <hayeswang@...ltek.com>
To: <kuba@...nel.org>, <davem@...emloft.net>
CC: <netdev@...r.kernel.org>, <nic_swsd@...ltek.com>,
        <linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>,
        Hayes Wang
	<hayeswang@...ltek.com>
Subject: [PATCH net] r8152: fix unknown device for choose_configuration

For the unknown device, rtl8152_cfgselector_choose_configuration()
should return a negative value. Then, usb_choose_configuration() would
set a configuration for CDC ECM or NCM mode. Otherwise, there is no
usb interface driver for the device.

Fixes: aa4f2b3e418e ("r8152: Choose our USB config with choose_configuration() rather than probe()")
Signed-off-by: Hayes Wang <hayeswang@...ltek.com>
---
 drivers/net/usb/r8152.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 0d0672d2a654..51fe00c2b896 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -10078,7 +10078,7 @@ static int rtl8152_cfgselector_choose_configuration(struct usb_device *udev)
 	 * driver supports it.
 	 */
 	if (__rtl_get_hw_ver(udev) == RTL_VER_UNKNOWN)
-		return 0;
+		return -ENODEV;
 
 	/* The vendor mode is not always config #1, so to find it out. */
 	c = udev->config;
-- 
2.43.0