linux-kernel - RE: [PATCH] scsi: ufs: Remove an unpaired ufshcd_scsi_unblock_requests() in err

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Date:   Thu, 20 Aug 2020 06:24:16 +0000
From:   Avri Altman <Avri.Altman@....com>
To:     Can Guo <cang@...eaurora.org>,
        "asutoshd@...eaurora.org" <asutoshd@...eaurora.org>,
        "nguyenb@...eaurora.org" <nguyenb@...eaurora.org>,
        "hongwus@...eaurora.org" <hongwus@...eaurora.org>,
        "rnayak@...eaurora.org" <rnayak@...eaurora.org>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "kernel-team@...roid.com" <kernel-team@...roid.com>,
        "saravanak@...gle.com" <saravanak@...gle.com>,
        "salyzyn@...gle.com" <salyzyn@...gle.com>
CC:     Alim Akhtar <alim.akhtar@...sung.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Stanley Chu <stanley.chu@...iatek.com>,
        Bean Huo <beanhuo@...ron.com>,
        Bart Van Assche <bvanassche@....org>,
        open list <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] scsi: ufs: Remove an unpaired
 ufshcd_scsi_unblock_requests() in err_handler()

 
> 
> Commit 5586dd8ea250a ("scsi: ufs: Fix a race condition between error
> handler and runtime PM ops") moves the ufshcd_scsi_block_requests() inside
> err_handler(), but forgets to remove the ufshcd_scsi_unblock_requests() in
> the early return path. Correct the coding mistake.

"fixes" tag please, for those who don't read the commit message.
Thanks,
Avri
> 
> Signed-off-by: Can Guo <cang@...eaurora.org>
> 
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index 2b55c2e..b8441ad 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -5670,7 +5670,6 @@ static void ufshcd_err_handler(struct work_struct
> *work)
>                 if (hba->ufshcd_state != UFSHCD_STATE_ERROR)
>                         hba->ufshcd_state = UFSHCD_STATE_OPERATIONAL;
>                 spin_unlock_irqrestore(hba->host->host_lock, flags);
> -               ufshcd_scsi_unblock_requests(hba);
>                 return;
>         }
>         ufshcd_set_eh_in_progress(hba);
> --
> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux
> Foundation Collaborative Project.