linux-kernel - [PATCH] net: cdc_ncm: Fix build error

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Date:   Wed, 26 Aug 2020 14:52:31 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <davem@...emloft.net>, <kuba@...nel.org>, <masahiroy@...nel.org>,
        <bjorn@...k.no>, <miguel@....uvigo.gal>
CC:     <linux-usb@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH] net: cdc_ncm: Fix build error

If USB_NET_CDC_NCM is y and USB_NET_CDCETHER is m, build fails:

drivers/net/usb/cdc_ncm.o:(.rodata+0x1d8): undefined reference to `usbnet_cdc_update_filter'

Select USB_NET_CDCETHER for USB_NET_CDC_NCM to fix this.

Reported-by: Hulk Robot <hulkci@...wei.com>
Fixes: e10dcb1b6ba7 ("net: cdc_ncm: hook into set_rx_mode to admit multicast traffic")
Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/net/usb/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig
index a7fbc3ccd29e..c7bcfca7d70b 100644
--- a/drivers/net/usb/Kconfig
+++ b/drivers/net/usb/Kconfig
@@ -252,6 +252,7 @@ config USB_NET_CDC_EEM
 config USB_NET_CDC_NCM
 	tristate "CDC NCM support"
 	depends on USB_USBNET
+	select USB_NET_CDCETHER
 	default y
 	help
 	  This driver provides support for CDC NCM (Network Control Model
-- 
2.17.1