linux-kernel - Re: [PATCH -next] staging: vc04_services: use DEFINE_MUTEX (and mutex

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Message-ID: <20210104140110.GQ2809@kadam>
Date:   Mon, 4 Jan 2021 17:01:10 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Zheng Yongjun <zhengyongjun3@...wei.com>
Cc:     nsaenzjulienne@...e.de, bcm-kernel-feedback-list@...adcom.com,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] staging: vc04_services: use DEFINE_MUTEX (and
 mutex_init() had been too late)

On Wed, Dec 23, 2020 at 10:11:29PM +0800, Zheng Yongjun wrote:
> Signed-off-by: Zheng Yongjun <zhengyongjun3@...wei.com>
> ---
>  .../vc04_services/interface/vchiq_arm/vchiq_connected.c        | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_connected.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_connected.c
> index 79b75efa6868..864253866155 100644
> --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_connected.c
> +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_connected.c
> @@ -12,13 +12,12 @@ static   int                        g_connected;
>  static   int                        g_num_deferred_callbacks;
>  static   VCHIQ_CONNECTED_CALLBACK_T g_deferred_callback[MAX_CALLBACKS];
>  static   int                        g_once_init;
> -static   struct mutex               g_connected_mutex;
> +static   DEFINE_MUTEX(g_connected_mutex);
>  
>  /* Function to initialize our lock */
>  static void connected_init(void)
>  {
>  	if (!g_once_init) {
> -		mutex_init(&g_connected_mutex);
>  		g_once_init = 1;
>  	}

Delete the extra curly braces.

regards,
dan carpenter