From: Arnd Bergmann <a...@arndb.de>

Without crc32 support, this driver fails to link:

arm-linux-gnueabi-ld: drivers/usb/gadget/function/f_eem.o: in function 
`eem_unwrap':
f_eem.c:(.text+0x11cc): undefined reference to `crc32_le'
arm-linux-gnueabi-ld: 
drivers/usb/gadget/function/f_ncm.o:f_ncm.c:(.text+0x1e40):
more undefined references to `crc32_le' follow

Fixes: 6d3865f9d41f ("usb: gadget: NCM: Add transmit multi-frame.")
Signed-off-by: Arnd Bergmann <a...@arndb.de>
---
 drivers/usb/gadget/Kconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 7e47e6223089..2d152571a7de 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -265,6 +265,7 @@ config USB_CONFIGFS_NCM
        depends on NET
        select USB_U_ETHER
        select USB_F_NCM
+       select CRC32
        help
          NCM is an advanced protocol for Ethernet encapsulation, allows
          grouping of several ethernet frames into one USB transfer and
@@ -314,6 +315,7 @@ config USB_CONFIGFS_EEM
        depends on NET
        select USB_U_ETHER
        select USB_F_EEM
+       select CRC32
        help
          CDC EEM is a newer USB standard that is somewhat simpler than CDC ECM
          and therefore can be supported by more hardware.  Technically ECM and
-- 
2.29.2

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