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Date:   Fri, 15 Oct 2021 15:07:54 +0200
From:   Vegard Nossum <>
To:     Woojung Huh <>,, Jakub Kicinski <>
Cc:     "David S. Miller" <>,,,,
        Vegard Nossum <>
Subject: [PATCH] lan78xx: select CRC32

Fix the following build/link error by adding a dependency on the CRC32

  ld: drivers/net/usb/lan78xx.o: in function `lan78xx_set_multicast':
  lan78xx.c:(.text+0x48cf): undefined reference to `crc32_le'

The actual use of crc32_le() comes indirectly through ether_crc().

Fixes: 55d7de9de6c30 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Signed-off-by: Vegard Nossum <>
 drivers/net/usb/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig
index f87f175033731..b554054a7560a 100644
--- a/drivers/net/usb/Kconfig
+++ b/drivers/net/usb/Kconfig
@@ -117,6 +117,7 @@ config USB_LAN78XX
 	select PHYLIB
 	select FIXED_PHY
+	select CRC32
 	  This option adds support for Microchip LAN78XX based USB 2
 	  & USB 3 10/100/1000 Ethernet adapters.

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