linux-kernel - RE: [PATCH] scsi: ufs: change upiu

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Date:   Mon, 6 Jul 2020 21:03:09 +0530
From:   "Alim Akhtar" <alim.akhtar@...sung.com>
To:     "'Bean Huo'" <huobean@...il.com>, <avri.altman@....com>,
        <asutoshd@...eaurora.org>, <jejb@...ux.ibm.com>,
        <martin.petersen@...cle.com>, <stanley.chu@...iatek.com>,
        <beanhuo@...ron.com>, <bvanassche@....org>,
        <tomas.winkler@...el.com>, <cang@...eaurora.org>
Cc:     <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] scsi: ufs: change upiu_flags to be u8

Hi Bean

> -----Original Message-----
> From: Bean Huo <huobean@...il.com>
> Sent: 06 July 2020 18:10
> To: alim.akhtar@...sung.com; avri.altman@....com;
> asutoshd@...eaurora.org; jejb@...ux.ibm.com; martin.petersen@...cle.com;
> stanley.chu@...iatek.com; beanhuo@...ron.com; bvanassche@....org;
> tomas.winkler@...el.com; cang@...eaurora.org
> Cc: linux-scsi@...r.kernel.org; linux-kernel@...r.kernel.org
> Subject: [PATCH] scsi: ufs: change upiu_flags to be u8
> 
> From: Bean Huo <beanhuo@...ron.com>
> 
> According to the UFS Spec, the Flags in the UPIU is one-byte length, not
> 4 bytes. change it to be u8.
> 
> Signed-off-by: Bean Huo <beanhuo@...ron.com>
> ---
Reviewed-by: Alim Akhtar <alim.akhtar@...sung.com>
Booted and tested on exynos7 board, tested basic read/write, so
Tested-by: Alim Akhtar <alim.akhtar@...sung.com>

Thanks,

>  drivers/scsi/ufs/ufshcd.c | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index
> 96d830bb900f..d7fd5891e81f 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -2240,7 +2240,7 @@ static void ufshcd_disable_intr(struct ufs_hba *hba,
> u32 intrs)
>   * @cmd_dir: requests data direction
>   */
>  static void ufshcd_prepare_req_desc_hdr(struct ufshcd_lrb *lrbp,
> -			u32 *upiu_flags, enum dma_data_direction cmd_dir)
> +			u8 *upiu_flags, enum dma_data_direction cmd_dir)
>  {
>  	struct utp_transfer_req_desc *req_desc = lrbp->utr_descriptor_ptr;
>  	u32 data_direction;
> @@ -2286,7 +2286,7 @@ static void ufshcd_prepare_req_desc_hdr(struct
> ufshcd_lrb *lrbp,
>   * @upiu_flags: flags
>   */
>  static
> -void ufshcd_prepare_utp_scsi_cmd_upiu(struct ufshcd_lrb *lrbp, u32
> upiu_flags)
> +void ufshcd_prepare_utp_scsi_cmd_upiu(struct ufshcd_lrb *lrbp, u8
> +upiu_flags)
>  {
>  	struct scsi_cmnd *cmd = lrbp->cmd;
>  	struct utp_upiu_req *ucd_req_ptr = lrbp->ucd_req_ptr; @@ -2319,7
> +2319,7 @@ void ufshcd_prepare_utp_scsi_cmd_upiu(struct ufshcd_lrb *lrbp,
> u32 upiu_flags)
>   * @upiu_flags: flags
>   */
>  static void ufshcd_prepare_utp_query_req_upiu(struct ufs_hba *hba,
> -				struct ufshcd_lrb *lrbp, u32 upiu_flags)
> +				struct ufshcd_lrb *lrbp, u8 upiu_flags)
>  {
>  	struct utp_upiu_req *ucd_req_ptr = lrbp->ucd_req_ptr;
>  	struct ufs_query *query = &hba->dev_cmd.query; @@ -2376,7 +2376,7
> @@ static inline void ufshcd_prepare_utp_nop_upiu(struct ufshcd_lrb *lrbp)
> static int ufshcd_compose_devman_upiu(struct ufs_hba *hba,
>  				      struct ufshcd_lrb *lrbp)
>  {
> -	u32 upiu_flags;
> +	u8 upiu_flags;
>  	int ret = 0;
> 
>  	if ((hba->ufs_version == UFSHCI_VERSION_10) || @@ -2404,7 +2404,7
> @@ static int ufshcd_compose_devman_upiu(struct ufs_hba *hba,
>   */
>  static int ufshcd_comp_scsi_upiu(struct ufs_hba *hba, struct ufshcd_lrb
*lrbp)  {
> -	u32 upiu_flags;
> +	u8 upiu_flags;
>  	int ret = 0;
> 
>  	if ((hba->ufs_version == UFSHCI_VERSION_10) || @@ -6124,7 +6124,7
> @@ static int ufshcd_issue_devman_upiu_cmd(struct ufs_hba *hba,
>  	int tag;
>  	struct completion wait;
>  	unsigned long flags;
> -	u32 upiu_flags;
> +	u8 upiu_flags;
> 
>  	down_read(&hba->clk_scaling_lock);
> 
> --
> 2.17.1