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Subject: Re: [PATCH v2] scsi: ufshcd: fix missing destroy_workqueue()
To:     Qinglang Miao <miaoqinglang@huawei.com>,
        Alim Akhtar <alim.akhtar@samsung.com>,
        Avri Altman <avri.altman@wdc.com>,
        "James E.J. Bottomley" <jejb@linux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@oracle.com>
Cc:     linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
References: <20201110074223.41280-1-miaoqinglang@huawei.com>
From:   "Asutosh Das (asd)" <asutoshd@codeaurora.org>
Message-ID: <e765eb4f-a85d-72c8-3f82-1f321e3d6c3b@codeaurora.org>
Date:   Tue, 10 Nov 2020 10:17:57 -0800
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On 11/9/2020 11:42 PM, Qinglang Miao wrote:
> Add the missing destroy_workqueue() before return from
> ufshcd_init in the error handling case as well as in
> ufshcd_remove.
> 
> Fixes: 4db7a2360597 ("scsi: ufs: Fix concurrency of error handler and other error recovery paths")
> Suggested-by: Avri Altman <Avri.Altman@wdc.com>
> Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
> ---

Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>

>   v2: consider missing destroy_workqueue ufshcd_remove either.
> 
>   drivers/scsi/ufs/ufshcd.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index b8f573a02713..adbdda4f556b 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -8906,6 +8906,7 @@ void ufshcd_remove(struct ufs_hba *hba)
>   	blk_mq_free_tag_set(&hba->tmf_tag_set);
>   	blk_cleanup_queue(hba->cmd_queue);
>   	scsi_remove_host(hba->host);
> +	destroy_workqueue(hba->eh_wq);
>   	/* disable interrupts */
>   	ufshcd_disable_intr(hba, hba->intr_mask);
>   	ufshcd_hba_stop(hba);
> @@ -9206,6 +9207,7 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
>   exit_gating:
>   	ufshcd_exit_clk_scaling(hba);
>   	ufshcd_exit_clk_gating(hba);
> +	destroy_workqueue(hba->eh_wq);
>   out_disable:
>   	hba->is_irq_enabled = false;
>   	ufshcd_hba_exit(hba);
> 


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