From: Xiang Chen <chenxiang66@hisilicon.com>
Date: Wed, 6 Feb 2019 18:52:53 +0800
Subject: scsi: hisi_sas: change queue depth from 512 to 4096
Patch-mainline: v5.1-rc1
Git-commit: 1273d65f29045df915ff1448672cca22f7c078e6
References: bsc#1137322 bsc#1137323 bsc#1138099 bsc#1138100

If sending IOs to many disks from single queue, it is possible that the
queue may be full. To avoid the situation, change queue depth from 512 to
4096 which is the max number of IOs for v3 hw.

Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
 drivers/scsi/hisi_sas/hisi_sas.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -30,7 +30,7 @@
 
 #define HISI_SAS_MAX_PHYS	9
 #define HISI_SAS_MAX_QUEUES	32
-#define HISI_SAS_QUEUE_SLOTS 512
+#define HISI_SAS_QUEUE_SLOTS	4096
 #define HISI_SAS_MAX_ITCT_ENTRIES 1024
 #define HISI_SAS_MAX_DEVICES HISI_SAS_MAX_ITCT_ENTRIES
 #define HISI_SAS_RESET_BIT	0