From: Alim Akhtar <alim.akhtar@samsung.com>
Date: Thu, 28 May 2020 06:46:51 +0530
Subject: scsi: ufs: Add quirk to enable host controller without hce
Git-commit: 39bf2d83b54e900675cd7b52737ded695bb60bf1
Patch-mainline: v5.9-rc1
References: bsc#1186993

Some host controllers don't support host controller enable via HCE.

Link: https://lore.kernel.org/r/20200528011658.71590-4-alim.akhtar@samsung.com
Reviewed-by: Can Guo <cang@codeaurora.org>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Seungwon Jeon <essuuj@gmail.com>
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Lee Duncan <lduncan@suse.com>
---
 drivers/scsi/ufs/ufshcd.c |    3 ++-
 drivers/scsi/ufs/ufshcd.h |    6 ++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -3561,12 +3561,13 @@ static int ufshcd_dme_link_startup(struc
 			"dme-link-startup: error code %d\n", ret);
 	return ret;
 }
+
 /**
  * ufshcd_dme_reset - UIC command for DME_RESET
  * @hba: per adapter instance
  *
  * DME_RESET command is issued in order to reset UniPro stack.
- * This function now deal with cold reset.
+ * This function now deals with cold reset.
  *
  * Returns 0 on success, non-zero value on failure
  */
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -523,6 +523,12 @@ enum ufshcd_quirks {
 	 * that the interrupt aggregation timer and counter are reset by s/w.
 	 */
 	UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR		= 1 << 7,
+
+	/*
+	 * This quirks needs to be enabled if host controller cannot be
+	 * enabled via HCE register.
+	 */
+	UFSHCI_QUIRK_BROKEN_HCE				= 1 << 8,
 };
 
 /**