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Sender: Guenter Roeck <groeck7@gmail.com>
Subject: Re: [PATCH] usb: typec: tcpm: turn tcpm_ams_finish into void function
To:     Yang Li <yang.lee@linux.alibaba.com>
Cc:     heikki.krogerus@linux.intel.com, gregkh@linuxfoundation.org,
        linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
References: <1615184481-102148-1-git-send-email-yang.lee@linux.alibaba.com>
From:   Guenter Roeck <linux@roeck-us.net>
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Message-ID: <385d74e5-6b75-f20b-d589-0fb77e233c52@roeck-us.net>
Date:   Sun, 7 Mar 2021 22:30:23 -0800
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On 3/7/21 10:21 PM, Yang Li wrote:
> This function always return '0' and no callers use the return value.
> So make it a void function.
> 
> This eliminates the following coccicheck warning:
> ./drivers/usb/typec/tcpm/tcpm.c:778:5-8: Unneeded variable: "ret".
> Return "0" on line 794
> 
> Reported-by: Abaci Robot <abaci@linux.alibaba.com>
> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
> ---
>  drivers/usb/typec/tcpm/tcpm.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
> index be0b646..6ee984e 100644
> --- a/drivers/usb/typec/tcpm/tcpm.c
> +++ b/drivers/usb/typec/tcpm/tcpm.c
> @@ -773,10 +773,8 @@ static enum typec_cc_status tcpm_rp_cc(struct tcpm_port *port)
>  	return TYPEC_CC_RP_DEF;
>  }
>  
> -static int tcpm_ams_finish(struct tcpm_port *port)
> +static void tcpm_ams_finish(struct tcpm_port *port)
>  {
> -	int ret = 0;
> -
>  	tcpm_log(port, "AMS %s finished", tcpm_ams_str[port->ams]);
>  
>  	if (port->pd_capable && port->pwr_role == TYPEC_SOURCE) {
> @@ -791,7 +789,7 @@ static int tcpm_ams_finish(struct tcpm_port *port)
>  	port->in_ams = false;
>  	port->ams = NONE_AMS;
>  
> -	return ret;
> +	return;

Unnecessary return statement

Guenter

>  }
>  
>  static int tcpm_pd_transmit(struct tcpm_port *port,
>