Subject: linux-next: manual merge of the usb tree with the nn-nonmm-unstable tree

From: Stephen Rothwell <[email-masked]>
Date: Tue, 13 Jan 2026 15:07:52 +1100

Hi all,

After merging the usb tree, today's linux-next build (arm
multi_v7_defconfig) failed like this:

In file included from drivers/usb/gadget/function/f_ncm.c:27:
drivers/usb/gadget/function/f_ncm.c: In function 'ncm_opts_dev_addr_store':
drivers/usb/gadget/function/u_ether_configfs.h:243:31: error: implicit declaration of function 'hex_to_bin' [-Wimplicit-function-declaration]
  243 |                         num = hex_to_bin(*p++) << 4;                            \
      |                               ^~~~~~~~~~
drivers/usb/gadget/function/f_ncm.c:1600:1: note: in expansion of macro 'USB_ETHER_OPTS_ATTR_DEV_ADDR'
 1600 | USB_ETHER_OPTS_ATTR_DEV_ADDR(ncm);
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Caused by commit

  30034bbf280f ("kernel.h: drop hex.h and update all hex.h users")

from the mm-nonmm-unstable tree interacting with commits

  e065c6a7e46c ("usb: gadget: u_ether: add gether_opts for config caching")
  56a512a9b410 ("usb: gadget: f_ncm: align net_device lifecycle with bind/unbind")

from the USB tree.

I have applied the following merge resolution patch for today.

From: Stephen Rothwell <[email-masked]>
Date: Tue, 13 Jan 2026 14:36:59 +1100
Subject: [PATCH] fix up for "usb: gadget: u_ether: add gether_opts for config
 caching"

interacting with commit

 30034bbf280f ("kernel.h: drop hex.h and update all hex.h users")

from the mm-nonmm-unstable tree.

Signed-off-by: Stephen Rothwell <[email-masked]>
---
 drivers/usb/gadget/function/u_ether_configfs.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/gadget/function/u_ether_configfs.h b/drivers/usb/gadget/function/u_ether_configfs.h
index 39d3a261496d..c2f8903d1400 100644
--- a/drivers/usb/gadget/function/u_ether_configfs.h
+++ b/drivers/usb/gadget/function/u_ether_configfs.h
@@ -18,6 +18,7 @@
 #include <linux/mutex.h>
 #include <linux/netdevice.h>
 #include <linux/rtnetlink.h>
+#include <linux/hex.h>
 
 #define USB_ETHERNET_CONFIGFS_ITEM(_f_)					\
 	static void _f_##_attr_release(struct config_item *item)	\
-- 
2.52.0

-- 
Cheers,
Stephen Rothwell