From 10fb4f87438d99b2ef06aea38ca2f0454725e8b5 Mon Sep 17 00:00:00 2001 From: jongmin jeong Date: Mon, 18 Oct 2021 21:42:03 +0900 Subject: [PATCH] scsi: ufs: Add quirk to enable host controller without PH configuration Samsung ExynosAuto v9 SoC virtual hosts do not support device management. Add a quirk to skip the physical host interface configuration part that cannot be performed in the virtual host. Link: https://lore.kernel.org/r/20211018124216.153072-3-chanho61.park@samsung.com Cc: James E.J. Bottomley Cc: Martin K. Petersen Cc: Bart Van Assche Suggested-by: Alim Akhtar Reviewed-by: Alim Akhtar Signed-off-by: jongmin jeong Signed-off-by: Chanho Park Signed-off-by: Martin K. Petersen --- drivers/scsi/ufs/ufshcd.c | 3 +++ drivers/scsi/ufs/ufshcd.h | 6 ++++++ 2 files changed, 9 insertions(+) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index dc7ce9eef0c78..f5ba8f953b876 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -8031,6 +8031,9 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool init_dev_params) if (ret) goto out; + if (hba->quirks & UFSHCD_QUIRK_SKIP_PH_CONFIGURATION) + goto out; + /* Debug counters initialization */ ufshcd_clear_dbg_ufs_stats(hba); diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index e67181a013e36..4ceb3c7e65b4b 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -595,6 +595,12 @@ enum ufshcd_quirks { * support UIC command */ UFSHCD_QUIRK_BROKEN_UIC_CMD = 1 << 15, + + /* + * This quirk needs to be enabled if the host controller cannot + * support physical host configuration. + */ + UFSHCD_QUIRK_SKIP_PH_CONFIGURATION = 1 << 16, }; enum ufshcd_caps { -- 2.30.2