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

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Message-ID: <a28702fb-32c5-4286-88ee-1186c444ea37@infradead.org>
Date: Mon, 12 Jan 2026 23:18:24 -0800
From: Randy Dunlap <rdunlap@...radead.org>
To: Greg KH <greg@...ah.com>
Cc: Stephen Rothwell <sfr@...b.auug.org.au>,
 Andrew Morton <akpm@...ux-foundation.org>, Kuen-Han Tsai
 <khtsai@...gle.com>, Linux Kernel Mailing List
 <linux-kernel@...r.kernel.org>,
 Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: manual merge of the usb tree with the
 nn-nonmm-unstable tree



On 1/12/26 11:01 PM, Randy Dunlap wrote:
> 
> 
> On 1/12/26 10:53 PM, Greg KH wrote:
>> On Mon, Jan 12, 2026 at 10:44:29PM -0800, Randy Dunlap wrote:
>>> Gi,
>>>
>>> On 1/12/26 8:07 PM, Stephen Rothwell wrote:
>>>> 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 <sfr@...b.auug.org.au>
>>>> 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 <sfr@...b.auug.org.au>
>>>> ---
>>>>  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>
>>>
>>> LGTM. What is the procedure for this? (my first AFAIK)
>>
>> I can take a patch for this now in my tree, as it would "just work" for
>> that, right?
> 
> Yes, it just needs that additional header file.
> Thanks.

I'm sending a patch, or you can just go with the patch that Stephen added.

-- 
~Randy