linux-kernel - Re: [PATCH v2] usb: typec: tcpm: turn tcpm_ams

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Date:   Mon, 8 Mar 2021 10:28:33 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Yang Li <yang.lee@...ux.alibaba.com>
Cc:     heikki.krogerus@...ux.intel.com, gregkh@...uxfoundation.org,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] usb: typec: tcpm: turn tcpm_ams_finish into void
 function

On Mon, Mar 08, 2021 at 02:35:30PM +0800, 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@...ux.alibaba.com>
> Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>

Reviewed-by: Guenter Roeck <linux@...ck-us.net>

> ---
> 
> Change in v2:
> -remove the unnecessary return statement
> 
>  drivers/usb/typec/tcpm/tcpm.c | 6 +-----
>  1 file changed, 1 insertion(+), 5 deletions(-)
> 
> diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
> index be0b646..8159229 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) {
> @@ -790,8 +788,6 @@ static int tcpm_ams_finish(struct tcpm_port *port)
>  
>  	port->in_ams = false;
>  	port->ams = NONE_AMS;
> -
> -	return ret;
>  }
>  
>  static int tcpm_pd_transmit(struct tcpm_port *port,
> -- 
> 1.8.3.1
>