linux-kernel - [PATCH v4 5/8] scsi: ufs: Add error history for abort event in UFS Device W-LUN

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Date:   Sat, 5 Dec 2020 10:39:35 +0800
From:   Stanley Chu <stanley.chu@...iatek.com>
To:     <linux-scsi@...r.kernel.org>, <martin.petersen@...cle.com>,
        <avri.altman@....com>, <alim.akhtar@...sung.com>,
        <jejb@...ux.ibm.com>
CC:     <beanhuo@...ron.com>, <asutoshd@...eaurora.org>,
        <cang@...eaurora.org>, <matthias.bgg@...il.com>,
        <bvanassche@....org>, <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <kuohong.wang@...iatek.com>,
        <peter.wang@...iatek.com>, <chun-hung.wu@...iatek.com>,
        <andy.teng@...iatek.com>, <chaotian.jing@...iatek.com>,
        <cc.chou@...iatek.com>, <jiajie.hao@...iatek.com>,
        <alice.chao@...iatek.com>, <huadian.liu@...iatek.com>,
        Stanley Chu <stanley.chu@...iatek.com>
Subject: [PATCH v4 5/8] scsi: ufs: Add error history for abort event in UFS Device W-LUN

Add error history for abort event in UFS Device W-LUN.
Besides, use specified value as parameter of ufshcd_update_reg_hist()
to identify the aborted tag or LUNs.

Reviewed-by: Can Guo <cang@...eaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@...iatek.com>
---
 drivers/scsi/ufs/ufshcd.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index c2f611516ea7..922d68bca345 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -6738,8 +6738,10 @@ static int ufshcd_abort(struct scsi_cmnd *cmd)
 	 * To avoid these unnecessary/illegal step we skip to the last error
 	 * handling stage: reset and restore.
 	 */
-	if (lrbp->lun == UFS_UPIU_UFS_DEVICE_WLUN)
+	if (lrbp->lun == UFS_UPIU_UFS_DEVICE_WLUN) {
+		ufshcd_update_reg_hist(&hba->ufs_stats.task_abort, lrbp->lun);
 		return ufshcd_eh_host_reset_handler(cmd);
+	}
 
 	ufshcd_hold(hba, false);
 	reg = ufshcd_readl(hba, REG_UTP_TRANSFER_REQ_DOOR_BELL);
@@ -6763,7 +6765,7 @@ static int ufshcd_abort(struct scsi_cmnd *cmd)
 	 */
 	scsi_print_command(hba->lrb[tag].cmd);
 	if (!hba->req_abort_count) {
-		ufshcd_update_reg_hist(&hba->ufs_stats.task_abort, 0);
+		ufshcd_update_reg_hist(&hba->ufs_stats.task_abort, tag);
 		ufshcd_print_host_regs(hba);
 		ufshcd_print_host_state(hba);
 		ufshcd_print_pwr_info(hba);
-- 
2.18.0