Re: [PATCH v4 7/9] scsi: ufs: Move the ufshcd_mcq_enable() call

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On Tue, Jul 02, 2024 at 01:39:15PM -0700, Bart Van Assche wrote:
> Move the ufshcd_mcq_enable() call and also the hba->mcq_enabled = true
> assignment from inside ufshcd_config_mcq() to the callers of this function.
> No functionality is changed by this patch.
> 
> Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>

For the code,

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>

But neither the subject, nor the commit message explains _why_ this change is
needed.

- Mani

> ---
>  drivers/ufs/core/ufshcd.c | 11 +++++++----
>  1 file changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
> index 4c138f42a802..b3444f9ce130 100644
> --- a/drivers/ufs/core/ufshcd.c
> +++ b/drivers/ufs/core/ufshcd.c
> @@ -8702,9 +8702,6 @@ static void ufshcd_config_mcq(struct ufs_hba *hba)
>  	ufshcd_mcq_make_queues_operational(hba);
>  	ufshcd_mcq_config_mac(hba, hba->nutrs);
>  
> -	ufshcd_mcq_enable(hba);
> -	hba->mcq_enabled = true;
> -
>  	dev_info(hba->dev, "MCQ configured, nr_queues=%d, io_queues=%d, read_queue=%d, poll_queues=%d, queue_depth=%d\n",
>  		 hba->nr_hw_queues, hba->nr_queues[HCTX_TYPE_DEFAULT],
>  		 hba->nr_queues[HCTX_TYPE_READ], hba->nr_queues[HCTX_TYPE_POLL],
> @@ -8732,8 +8729,10 @@ static int ufshcd_device_init(struct ufs_hba *hba, bool init_dev_params)
>  	ufshcd_set_link_active(hba);
>  
>  	/* Reconfigure MCQ upon reset */
> -	if (hba->mcq_enabled && !init_dev_params)
> +	if (hba->mcq_enabled && !init_dev_params) {
>  		ufshcd_config_mcq(hba);
> +		ufshcd_mcq_enable(hba);
> +	}
>  
>  	/* Verify device initialization by sending NOP OUT UPIU */
>  	ret = ufshcd_verify_dev_init(hba);
> @@ -8757,6 +8756,8 @@ static int ufshcd_device_init(struct ufs_hba *hba, bool init_dev_params)
>  			ret = ufshcd_alloc_mcq(hba);
>  			if (!ret) {
>  				ufshcd_config_mcq(hba);
> +				ufshcd_mcq_enable(hba);
> +				hba->mcq_enabled = true;
>  			} else {
>  				/* Continue with SDB mode */
>  				use_mcq_mode = false;
> @@ -8772,6 +8773,8 @@ static int ufshcd_device_init(struct ufs_hba *hba, bool init_dev_params)
>  		} else if (is_mcq_supported(hba)) {
>  			/* UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH is set */
>  			ufshcd_config_mcq(hba);
> +			ufshcd_mcq_enable(hba);
> +			hba->mcq_enabled = true;
>  		}
>  	}
>  

-- 
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