linux-kernel - RE: [PATCH -next] wifi: rtw88: add missing destroy_workqueue() on error path in rtw_core

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Message-ID: <11d0e70bdadf491fab1586a8b4ef199e@realtek.com>
Date:   Fri, 26 Aug 2022 02:01:42 +0000
From:   Ping-Ke Shih <pkshih@...ltek.com>
To:     Yang Yingliang <yangyingliang@...wei.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>
CC:     "tony0620emma@...il.com" <tony0620emma@...il.com>,
        "kvalo@...nel.org" <kvalo@...nel.org>,
        Bernie Huang <phhuang@...ltek.com>
Subject: RE: [PATCH -next] wifi: rtw88: add missing destroy_workqueue() on error path in rtw_core_init()


> -----Original Message-----
> From: Yang Yingliang <yangyingliang@...wei.com>
> Sent: Friday, August 26, 2022 9:57 AM
> To: Ping-Ke Shih <pkshih@...ltek.com>; linux-kernel@...r.kernel.org; netdev@...r.kernel.org;
> linux-wireless@...r.kernel.org
> Cc: tony0620emma@...il.com; kvalo@...nel.org; Bernie Huang <phhuang@...ltek.com>
> Subject: Re: [PATCH -next] wifi: rtw88: add missing destroy_workqueue() on error path in rtw_core_init()
> 
> Hi,
> 
> On 2022/8/26 8:44, Ping-Ke Shih wrote:
> >> -----Original Message-----
> >> From: Yang Yingliang <yangyingliang@...wei.com>
> >> Sent: Thursday, August 25, 2022 9:38 PM
> >> To: linux-kernel@...r.kernel.org; netdev@...r.kernel.org; linux-wireless@...r.kernel.org
> >> Cc: tony0620emma@...il.com; kvalo@...nel.org; Bernie Huang <phhuang@...ltek.com>
> >> Subject: [PATCH -next] wifi: rtw88: add missing destroy_workqueue() on error path in rtw_core_init()
> >>
> >> Add the missing destroy_workqueue() before return from rtw_core_init()
> >> in error path.
> >>
> >> Fixes: fe101716c7c9 ("rtw88: replace tx tasklet with work queue")
> >> Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
> >> ---
> >>   drivers/net/wireless/realtek/rtw88/main.c | 8 ++++++--
> >>   1 file changed, 6 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/drivers/net/wireless/realtek/rtw88/main.c b/drivers/net/wireless/realtek/rtw88/main.c
> >> index 790dcfed1125..557213e52761 100644
> >> --- a/drivers/net/wireless/realtek/rtw88/main.c
> >> +++ b/drivers/net/wireless/realtek/rtw88/main.c
> >> @@ -2094,7 +2094,7 @@ int rtw_core_init(struct rtw_dev *rtwdev)
> >>   	ret = rtw_load_firmware(rtwdev, RTW_NORMAL_FW);
> >>   	if (ret) {
> >>   		rtw_warn(rtwdev, "no firmware loaded\n");
> >> -		return ret;
> >> +		goto destroy_workqueue;
> >>   	}
> >>
> >>   	if (chip->wow_fw_name) {
> >> @@ -2104,11 +2104,15 @@ int rtw_core_init(struct rtw_dev *rtwdev)
> >>   			wait_for_completion(&rtwdev->fw.completion);
> >>   			if (rtwdev->fw.firmware)
> >>   				release_firmware(rtwdev->fw.firmware);
> >> -			return ret;
> >> +			goto destroy_workqueue;
> >>   		}
> >>   	}
> >>
> >>   	return 0;
> >> +
> >> +destroy_workqueue:
> > It's not so good that the label 'destroy_workqueue' is the same as function name.
> > I suggest to just use 'out' instead.
> How about 'out_destory_workqueue' ?
> 

Since there is only single one error case we need to handle, using 'out'
isn't ambiguous.