[PATCH v2 2/2] scsi: ufs: Use SYNCHRONIZE CACHE instead of FUA

[Bart Van Assche <bvanassche@xxxxxxx>]

From: Asutosh Das <quic_asutoshd@xxxxxxxxxxx>

UFS devices perform better when using SYNCHRONIZE CACHE command
instead of the FUA flag. Hence this patch.

Signed-off-by: Asutosh Das <quic_asutoshd@xxxxxxxxxxx>
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
[ bvanassche: modified a source code comment ]
---
 drivers/ufs/core/ufshcd.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index bf3cb12ef02f..a8d42d9308da 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -24,6 +24,7 @@
 #include <linux/sched/clock.h>
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_dbg.h>
+#include <scsi/scsi_devinfo.h>
 #include <scsi/scsi_driver.h>
 #include <scsi/scsi_eh.h>
 #include "ufshcd-priv.h"
@@ -5056,6 +5057,9 @@ static int ufshcd_slave_alloc(struct scsi_device *sdev)
 	/* WRITE_SAME command is not supported */
 	sdev->no_write_same = 1;
 
+	/* Use SYNCHRONIZE CACHE instead of FUA to improve performance */
+	sdev->sdev_bflags = BLIST_BROKEN_FUA;
+
 	ufshcd_lu_init(hba, sdev);
 
 	ufshcd_setup_links(hba, sdev);