linux-kernel - Re: [PATCH 6/9] scsi: libsas: Add missing annotation for sas_ata_qc

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Date:   Tue, 14 Apr 2020 08:35:17 +0100
From:   John Garry <john.garry@...wei.com>
To:     Jules Irenge <jbi.octave@...il.com>, <linux-kernel@...r.kernel.org>
CC:     <boqun.feng@...il.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Allison Randal <allison@...utok.net>,
        Hannes Reinecke <hare@...e.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        "open list:SCSI SUBSYSTEM" <linux-scsi@...r.kernel.org>,
        Jason Yan <yanaijie@...wei.com>
Subject: Re: [PATCH 6/9] scsi: libsas: Add missing annotation for
 sas_ata_qc_issue()

On 11/04/2020 01:19, Jules Irenge wrote:
> Sparse reports a warning at sas_ata_qc_issue()
> 
> warning: context imbalance in sas_ata_qc_issue() - unexpected unlock
> The root cause is the missing annotation at sas_ata_qc_issue()
> 
> Add the missing __must_hold(ap->lock) annotation
> 
> Signed-off-by: Jules Irenge <jbi.octave@...il.com>

that looks ok...

Reviewed-by: John Garry <john.garry@...wei.com>

> ---
>   drivers/scsi/libsas/sas_ata.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
> index c5a828a041e0..5d716d388707 100644
> --- a/drivers/scsi/libsas/sas_ata.c
> +++ b/drivers/scsi/libsas/sas_ata.c
> @@ -160,6 +160,7 @@ static void sas_ata_task_done(struct sas_task *task)
>   }
>   
>   static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
> +	__must_hold(ap->lock)
>   {
>   	struct sas_task *task;
>   	struct scatterlist *sg;
>