linux-kernel - [PATCH 4.9 32/45] usb: gadget: select CONFIG

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Message-Id: <20210111130035.200444302@linuxfoundation.org>
Date:   Mon, 11 Jan 2021 14:01:10 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 4.9 32/45] usb: gadget: select CONFIG_CRC32

From: Arnd Bergmann <arnd@...db.de>

commit d7889c2020e08caab0d7e36e947f642d91015bd0 upstream.

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 <arnd@...db.de>
Cc: stable <stable@...r.kernel.org>
Link: https://lore.kernel.org/r/20210103214224.1996535-1-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/gadget/Kconfig |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -258,6 +258,7 @@ 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
@@ -307,6 +308,7 @@ 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