Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 2515760ACE
Subject: Re: [PATCH] USB/xHCI: Remove returned value 'status' since never used
To:     Mathieu Malaterre <malat@debian.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     trivial@kernel.org, Sarah Sharp <sarah.a.sharp@intel.com>,
        linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
References: <20190326201557.20388-1-malat@debian.org>
From:   Mukesh Ojha <mojha@codeaurora.org>
Message-ID: <698062d2-5f7d-6ad8-88c4-5c823961f97a@codeaurora.org>
Date:   Wed, 27 Mar 2019 16:51:20 +0530
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101
 Thunderbird/60.6.0
MIME-Version: 1.0
In-Reply-To: <20190326201557.20388-1-malat@debian.org>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
Content-Language: en-US
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk


On 3/27/2019 1:45 AM, Mathieu Malaterre wrote:
> The returned value in status has never been used since
> commit 4296c70a5ec3 ("USB/xHCI: Enable USB 3.0 hub remote wakeup.")
> So remove 'status' completely.
>
> Remove warning (W=1):
>
>    drivers/usb/core/hub.c:3671:8: warning: variable 'status' set but not used [-Wunused-but-set-variable]
>
> Cc: Sarah Sharp <sarah.a.sharp@intel.com>
> Signed-off-by: Mathieu Malaterre <malat@debian.org>
> ---
>   drivers/usb/core/hub.c | 13 ++++++-------
>   1 file changed, 6 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
> index 8d4631c81b9f..15a2934dc29d 100644
> --- a/drivers/usb/core/hub.c
> +++ b/drivers/usb/core/hub.c
> @@ -3668,7 +3668,6 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg)
>   	struct usb_hub		*hub = usb_get_intfdata(intf);
>   	struct usb_device	*hdev = hub->hdev;
>   	unsigned		port1;
> -	int			status;
>   
>   	/*
>   	 * Warn if children aren't already suspended.
> @@ -3702,12 +3701,12 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg)
>   	if (hub_is_superspeed(hdev) && hdev->do_remote_wakeup) {
>   		/* Enable hub to send remote wakeup for all ports. */
>   		for (port1 = 1; port1 <= hdev->maxchild; port1++) {
> -			status = set_port_feature(hdev,
> -					port1 |
> -					USB_PORT_FEAT_REMOTE_WAKE_CONNECT |
> -					USB_PORT_FEAT_REMOTE_WAKE_DISCONNECT |
> -					USB_PORT_FEAT_REMOTE_WAKE_OVER_CURRENT,
> -					USB_PORT_FEAT_REMOTE_WAKE_MASK);


should not we check return value instead of removing it.

Thanks,
Mukesh

> +			set_port_feature(hdev,
> +					 port1 |
> +					 USB_PORT_FEAT_REMOTE_WAKE_CONNECT |
> +					 USB_PORT_FEAT_REMOTE_WAKE_DISCONNECT |
> +					 USB_PORT_FEAT_REMOTE_WAKE_OVER_CURRENT,
> +					 USB_PORT_FEAT_REMOTE_WAKE_MASK);
>   		}
>   	}
>