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Date:   Wed, 28 Jun 2017 12:00:19 +0800
From:   jeffy <jeffy.chen@...k-chips.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Gustavo Padovan <gustavo@...ovan.org>
CC:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the tip tree

Hi Stephen,

On 06/28/2017 11:43 AM, Stephen Rothwell wrote:
> Hi all,
>
> After merging the tip tree, today's linux-next build (x86_64 allmodconfig)
> failed like this:
>
> net/bluetooth/hidp/core.c:1241:39: error: unknown type name 'wait_queue_t'
>   static int hidp_session_wake_function(wait_queue_t *wait,
>                                         ^
> In file included from include/linux/mmzone.h:9:0,
>                   from include/linux/gfp.h:5,
>                   from include/linux/kmod.h:22,
>                   from include/linux/module.h:13,
>                   from net/bluetooth/hidp/core.c:25:
> net/bluetooth/hidp/core.c: In function 'hidp_session_thread':
> net/bluetooth/hidp/core.c:1259:30: error: 'hidp_session_wake_function' undeclared (first use in this function)
>    DEFINE_WAIT_FUNC(ctrl_wait, hidp_session_wake_function);
>                                ^
> include/linux/wait.h:954:12: note: in definition of macro 'DEFINE_WAIT_FUNC'
>     .func  = function,     \
>              ^
> net/bluetooth/hidp/core.c:1259:30: note: each undeclared identifier is reported only once for each function it appears in
>    DEFINE_WAIT_FUNC(ctrl_wait, hidp_session_wake_function);
>                                ^
> include/linux/wait.h:954:12: note: in definition of macro 'DEFINE_WAIT_FUNC'
>     .func  = function,     \
>              ^
>
> Caused by commit
>
>    ac6424b981bc ("sched/wait: Rename wait_queue_t => wait_queue_entry_t")
>
> interacting with commit
>
>    5da8e47d849d ("Bluetooth: hidp: fix possible might sleep error in hidp_session_thread")
>
> from the bluetooth tree.  I should have fixed this up in the merge, sorry.
> I added the following merge fix for today.
>
> From: Stephen Rothwell <sfr@...b.auug.org.au>
> Date: Wed, 28 Jun 2017 13:36:04 +1000
> Subject: [PATCH] Bluetooth: hidp: fix for "sched/wait: Rename wait_queue_t =>
>   wait_queue_entry_t"
>
> Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
> ---
>   net/bluetooth/hidp/core.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
> index 472b3907b1b0..002743ea509c 100644
> --- a/net/bluetooth/hidp/core.c
> +++ b/net/bluetooth/hidp/core.c
> @@ -1238,7 +1238,7 @@ static void hidp_session_run(struct hidp_session *session)
>   	smp_mb__after_atomic();
>   }
>
> -static int hidp_session_wake_function(wait_queue_t *wait,
> +static int hidp_session_wake_function(wait_queue_entry_t *wait,

thanx for fixing this. and i saw

commit 50816c48997af857d4bab3dca1aba90339705e96
Author: Ingo Molnar <mingo@...nel.org>
Date:   Sun Mar 5 10:33:16 2017 +0100

     sched/wait: Standardize internal naming of wait-queue entries


changed wait_queue_entry_t to struct wait_queue_entry, and also wait to 
wq_entry, maybe we should do it too?

>   				      unsigned int mode,
>   				      int sync, void *key)
>   {
>


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