Re: [PATCH v1 2/2] scsi: ufs: Fix and simplify setup_xfer_req variant operation

[Can Guo]

On 2020-07-06 14:07, Stanley Chu wrote:
> Add missing "setup_xfer_req" call in ufshcd_issue_devman_upiu_cmd()
> by ufs-bsg path, and collect all "setup_xfer_req" calls to an unified
> place, i.e., ufshcd_send_command(), to simplify the driver.
>
> Signed-off-by: Stanley Chu <stanley.chu@xxxxxxxxxxxx>

Reviewed-by: Can Guo <cang@xxxxxxxxxxxxxx>

> ---
>  drivers/scsi/ufs/ufshcd.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index 71e8d7c782bd..8603b07045a6 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -1925,8 +1925,11 @@ static void
> ufshcd_clk_scaling_update_busy(struct ufs_hba *hba)
>  static inline
>  void ufshcd_send_command(struct ufs_hba *hba, unsigned int task_tag)
>  {
> -	hba->lrb[task_tag].issue_time_stamp = ktime_get();
> -	hba->lrb[task_tag].compl_time_stamp = ktime_set(0, 0);
> +	struct ufshcd_lrb *lrbp = &hba->lrb[task_tag];
> +
> +	lrbp->issue_time_stamp = ktime_get();
> +	lrbp->compl_time_stamp = ktime_set(0, 0);
> +	ufshcd_vops_setup_xfer_req(hba, task_tag, (lrbp->cmd ? true : 
> false));
>  	ufshcd_add_command_trace(hba, task_tag, "send");
>  	ufshcd_clk_scaling_start_busy(hba);
>  	__set_bit(task_tag, &hba->outstanding_reqs);
> @@ -2544,7 +2547,6 @@ static int ufshcd_queuecommand(struct Scsi_Host
> *host, struct scsi_cmnd *cmd)
>
>  	/* issue command to the controller */
>  	spin_lock_irqsave(hba->host->host_lock, flags);
> -	ufshcd_vops_setup_xfer_req(hba, tag, true);
>  	ufshcd_send_command(hba, tag);
>  out_unlock:
>  	spin_unlock_irqrestore(hba->host->host_lock, flags);
> @@ -2731,7 +2733,6 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba 
> *hba,
>  	/* Make sure descriptors are ready before ringing the doorbell */
>  	wmb();
>  	spin_lock_irqsave(hba->host->host_lock, flags);
> -	ufshcd_vops_setup_xfer_req(hba, tag, false);
>  	ufshcd_send_command(hba, tag);
>  	spin_unlock_irqrestore(hba->host->host_lock, flags);