linux-kernel - Re: [PATCH] scsi: ufs: Fix divide zero case in ufshcd_map

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Message-Id: <164489509960.14916.804349130118004364.b4-ty@oracle.com>
Date:   Mon, 14 Feb 2022 22:18:35 -0500
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     ALIM AKHTAR <alim.akhtar@...sung.com>, beanhuo@...ron.com,
        asutoshd@...eaurora.org, jejb@...ux.ibm.com,
        Daejun Park <daejun7.park@...sung.com>, cang@...eaurora.org,
        adrian.hunter@...el.com, linux-kernel@...r.kernel.org,
        bvanassche@....org, linux-scsi@...r.kernel.org,
        Jinyoung CHOI <j-young.choi@...sung.com>, avri.altman@....com
Cc:     "Martin K . Petersen" <martin.petersen@...cle.com>
Subject: Re: [PATCH] scsi: ufs: Fix divide zero case in ufshcd_map_queues()

On Mon, 14 Feb 2022 19:33:52 +0900, Jinyoung CHOI wrote:

> Before calling blk_mq_map_queues(), the mq_map and nr_queues belonging
> to "struct blk_mq_queue_map" must be a vaild value.
> 
> If nr_queues is set to 0, the system may encounter the "divide zero"
> depending on the type of architecture.
> 
>     blk_mq_map_queues() -> queue_index()
> 
> [...]

Applied to 5.17/scsi-fixes, thanks!

[1/1] scsi: ufs: Fix divide zero case in ufshcd_map_queues()
      https://git.kernel.org/mkp/scsi/c/10af11564617

-- 
Martin K. Petersen	Oracle Linux Engineering