linux-kernel - Re: [PATCH v5 2/7] ufs: core: Update the ufshcd_clear

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Date:   Fri, 19 May 2023 15:53:06 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     "Bao D. Nguyen" <quic_nguyenb@...cinc.com>,
        quic_asutoshd@...cinc.com, quic_cang@...cinc.com, mani@...nel.org,
        stanley.chu@...iatek.com, adrian.hunter@...el.com,
        beanhuo@...ron.com, avri.altman@....com, martin.petersen@...cle.com
Cc:     linux-scsi@...r.kernel.org, Alim Akhtar <alim.akhtar@...sung.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 2/7] ufs: core: Update the ufshcd_clear_cmds()
 functionality

On 5/11/23 23:28, Bao D. Nguyen wrote:
> In the ufshcd_clear_cmds(), the 2nd pamameter would be the
> bit mask of the command to be cleared in the transfer request
> door bell register. This bit mask mechanism does not scale well in
> mcq mode when the queue depth becomes much greater than 64. Change the
> 2nd parameter to the function to be the task_tag number of the
> corresponding bit to be cleared in the door bell register.
> By doing so, mcq mode with a large queue depth can reuse this function.
> 
> Since the behavior of this function is changed from handling
> multiple commands into a single command, rename ufshcd_clear_cmds()
> into ufshcd_clear_cmd().

Reviewed-by: Bart Van Assche <bvanassche@....org>