[1/1] scsi: ufs-mediatek: Fix HWReset timing

Message ID 20210527160209.17231-1-alice.chao@mediatek.com
State New
Headers show
Series
  • [1/1] scsi: ufs-mediatek: Fix HWReset timing
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Commit Message

Alice May 27, 2021, 4:02 p.m.
From: "Alice.Chao" <alice.chao@mediatek.com>

HCI disable before HW Reset.
Because of the property of mtk ufshci,
we need to change reset flow to avoid potential issues.

Signed-off-by: Alice.Chao <alice.chao@mediatek.com>
---
 drivers/scsi/ufs/ufs-mediatek.c | 3 +++
 1 file changed, 3 insertions(+)

Patch

diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index a981f261b304..c62603ed3d33 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -846,6 +846,9 @@  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);
 
 	/*