Subject: Re: linux-next: build failure after merge of the usb tree

From: Greg KH <[email-masked]>
Date: Wed, 30 Nov 2022 11:52:05 +0100

On Wed, Nov 30, 2022 at 01:18:54PM +1100, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the usb tree, today's linux-next build (x86_64 allmodconfig)
> failed like this:
> 
> drivers/xen/unpopulated-alloc.c:17:21: error: 'list_count' redeclared as different kind of symbol
>    17 | static unsigned int list_count;
>       |                     ^~~~~~~~~~
> In file included from include/linux/preempt.h:11,
>                  from include/linux/spinlock.h:56,
>                  from include/linux/mmzone.h:8,
>                  from include/linux/gfp.h:7,
>                  from drivers/xen/unpopulated-alloc.c:3:
> include/linux/list.h:662:22: note: previous definition of 'list_count' with type 'size_t(struct list_head *)' {aka 'long unsigned int(struct list_head *)'}
>   662 | static inline size_t list_count(struct list_head *head)
>       |                      ^~~~~~~~~~
> 
> Caused by commit
> 
>   a9efc04cfd05 ("i915: Move list_count() to list.h for broader use")
> 
> I have used the usb tree from next-20221129 for today.

Odd, there is also one in the z2ram.c code but that isn't breaking :(

Andy, I'm going to revert this series from the USB tree now, please fix
it up and resend.

thanks,

greg k-h