linux-kernel - Re: [PATCH -next] ide-cd: fix warning: variable 'stat' set but not used

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Message-ID: <3832bef1-6181-4606-93f4-7432c92a5198@huawei.com>
Date:   Tue, 15 Jun 2021 09:59:51 +0800
From:   "libaokun (A)" <libaokun1@...wei.com>
To:     <davem@...emloft.net>, <linux-ide@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <weiyongjun1@...wei.com>, <yuehaibing@...wei.com>,
        <yangjihong1@...wei.com>, <yukuai3@...wei.com>
Subject: Re: [PATCH -next] ide-cd: fix warning: variable 'stat' set but not
 used

ping

在 2021/5/29 14:17, Baokun Li 写道:
> Fixes gcc '-Wunused-but-set-variable' warning:
>
> drivers/ide/ide-cd_ioctl.c: In function 'ide_cdrom_select_speed':
> drivers/ide/ide-cd_ioctl.c:212:6: warning:
>   variable ‘stat’ set but not used [-Wunused-but-set-variable]
>
> It never used since introduction.
>
> Signed-off-by: Baokun Li <libaokun1@...wei.com>
> ---
>   drivers/ide/ide-cd_ioctl.c | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/drivers/ide/ide-cd_ioctl.c b/drivers/ide/ide-cd_ioctl.c
> index 011eab9c69b7..8d0a52123349 100644
> --- a/drivers/ide/ide-cd_ioctl.c
> +++ b/drivers/ide/ide-cd_ioctl.c
> @@ -231,6 +231,8 @@ int ide_cdrom_select_speed(struct cdrom_device_info *cdi, int speed)
>   	}
>   
>   	stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, NULL, 0, 0);
> +	if (stat)
> +		return stat;
>   
>   	if (!ide_cdrom_get_capabilities(drive, buf)) {
>   		ide_cdrom_update_speed(drive, buf);