linux-kernel - Re: [PATCH v2] rapidio/tsi721: Replace flush_scheduled_work() with flush

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Date:   Tue, 12 Jul 2022 19:49:31 +0900
From:   Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:     Matt Porter <mporter@...nel.crashing.org>,
        Alexandre Bounine <alex.bou9@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v2] rapidio/tsi721: Replace flush_scheduled_work() with
 flush_work().

Can we start testing this change?

On 2022/06/26 22:56, Tetsuo Handa wrote:
> Is this change correct?
> 
> On 2022/06/12 22:31, Tetsuo Handa wrote:
>> Since "struct tsi721_device" is per a device struct, I assume that
>> tsi721_remove() needs to wait for only two works associated with that
>> device. Therefore, wait for only these works using flush_work().
>>
>> Signed-off-by: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
>> ---
>> Changes in v2:
>>   Use flush_work() instead of introducing a dedicated WQ.
>>
>> Please see commit c4f135d643823a86 ("workqueue: Wrap flush_workqueue()
>> using a macro") for background.
>>
>>  drivers/rapidio/devices/tsi721.c | 3 ++-
>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/rapidio/devices/tsi721.c b/drivers/rapidio/devices/tsi721.c
>> index b3134744fb55..0a42d6a2af24 100644
>> --- a/drivers/rapidio/devices/tsi721.c
>> +++ b/drivers/rapidio/devices/tsi721.c
>> @@ -2941,7 +2941,8 @@ static void tsi721_remove(struct pci_dev *pdev)
>>  
>>  	tsi721_disable_ints(priv);
>>  	tsi721_free_irq(priv);
>> -	flush_scheduled_work();
>> +	flush_work(&priv->idb_work);
>> +	flush_work(&priv->pw_work);
>>  	rio_unregister_mport(&priv->mport);
>>  
>>  	tsi721_unregister_dma(priv);