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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org,
	stable@vger.kernel.org
Cc: Hayes Wang <hayeswang@realtek.com>,
	Jakub Kicinski <kuba@kernel.org>,
	Sasha Levin <sashal@kernel.org>
Subject: [PATCH 6.8 344/715] r8152: fix unknown device for choose_configuration
Date: Sun, 24 Mar 2024 18:28:43 -0400
Message-ID: <20240324223455.1342824-345-sashal@kernel.org>
In-Reply-To: <20240324223455.1342824-1-sashal@kernel.org>
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From: Hayes Wang <hayeswang@realtek.com>

[ Upstream commit 46590b545df636aea0f9f7f2100d9963c0af5824 ]

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@realtek.com>
Link: https://lore.kernel.org/r/20240308075206.33553-436-nic_swsd@realtek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 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 0d0672d2a6545..51fe00c2b896e 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