From: Alice.Chao <alice.chao@mediatek.com>
Date: Fri, 28 May 2021 03:36:22 +0000 (+0800)
Subject: scsi: ufs: ufs-mediatek: Disable HCI before HW reset
X-Git-Tag: v5.14-rc1~96^2~174
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f9c602f3bd9c79c06ccd7621744472a64e93fd49;p=thirdparty%2Fkernel%2Flinux.git

scsi: ufs: ufs-mediatek: Disable HCI before HW reset

MediaTek ufshci needs to be disabled before HW reset to avoid potential
issues.

Link: https://lore.kernel.org/r/20210528033624.12170-3-alice.chao@mediatek.com
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Alice.Chao <alice.chao@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---

diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 9912e208c2a12..bbe0596afc9df 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -844,6 +844,9 @@ static int ufs_mtk_device_reset(struct ufs_hba *hba)
 {
 	struct arm_smccc_res res;
 
+	/* disable hba before device reset */
+	ufshcd_hba_stop(hba);
+
 	ufs_mtk_device_reset_ctrl(0, res);
 
 	/*