Re: [PATCH v4 5/9] scsi: ufs: Initialize hba->reserved_slot earlier

[Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>]

On Tue, Jul 02, 2024 at 01:39:13PM -0700, Bart Van Assche wrote:
> Move the hba->reserved_slot and the host->can_queue assignments from
> ufshcd_config_mcq() into ufshcd_alloc_mcq(). The advantages of this
> change are as follows:
> - It becomes easier to verify that these two parameters are updated
>   if hba->nutrs is updated.
> - It prevents unnecessary assignments to these two parameters. While
>   ufshcd_config_mcq() is called during host reset, ufshcd_alloc_mcq()
>   is not.
> 
> Cc: Can Guo <quic_cang@quicinc.com>
> Reviewed-by: Peter Wang <peter.wang@mediatek.com>
> Signed-off-by: Bart Van Assche <bvanassche@acm.org>

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

- Mani

> ---
>  drivers/ufs/core/ufshcd.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
> index 2cbd0f91953b..178b0abaeb30 100644
> --- a/drivers/ufs/core/ufshcd.c
> +++ b/drivers/ufs/core/ufshcd.c
> @@ -8678,6 +8678,9 @@ static int ufshcd_alloc_mcq(struct ufs_hba *hba)
>  	if (ret)
>  		goto err;
>  
> +	hba->host->can_queue = hba->nutrs - UFSHCD_NUM_RESERVED;
> +	hba->reserved_slot = hba->nutrs - UFSHCD_NUM_RESERVED;
> +
>  	return 0;
>  err:
>  	hba->nutrs = old_nutrs;
> @@ -8699,9 +8702,6 @@ static void ufshcd_config_mcq(struct ufs_hba *hba)
>  	ufshcd_mcq_make_queues_operational(hba);
>  	ufshcd_mcq_config_mac(hba, hba->nutrs);
>  
> -	hba->host->can_queue = hba->nutrs - UFSHCD_NUM_RESERVED;
> -	hba->reserved_slot = hba->nutrs - UFSHCD_NUM_RESERVED;
> -
>  	ufshcd_mcq_enable(hba);
>  	hba->mcq_enabled = true;
>  

-- 
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