From: Wu Bo <wubo40@huawei.com>
Date: Wed, 13 May 2020 16:18:13 +0800
Subject: [PATCH] nvme: disable streams when get stream params failed
Git-commit: 84e4c204b6a0e81f56bd7d1254123390ef0498c8
Patch-mainline: v5.8-rc1
References: jsc#SLE-15608

Disable streams again if getting the stream params fails.

Signed-off-by: Wu Bo <wubo40@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Hannes Reinecke <hare@suse.com>
---
 drivers/nvme/host/core.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 805d289e6cd9..43a6336d6264 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -552,19 +552,22 @@ static int nvme_configure_directives(struct nvme_ctrl *ctrl)
 
 	ret = nvme_get_stream_params(ctrl, &s, NVME_NSID_ALL);
 	if (ret)
-		return ret;
+		goto out_disable_stream;
 
 	ctrl->nssa = le16_to_cpu(s.nssa);
 	if (ctrl->nssa < BLK_MAX_WRITE_HINTS - 1) {
 		dev_info(ctrl->device, "too few streams (%u) available\n",
 					ctrl->nssa);
-		nvme_disable_streams(ctrl);
-		return 0;
+		goto out_disable_stream;
 	}
 
 	ctrl->nr_streams = min_t(unsigned, ctrl->nssa, BLK_MAX_WRITE_HINTS - 1);
 	dev_info(ctrl->device, "Using %u streams\n", ctrl->nr_streams);
 	return 0;
+
+out_disable_stream:
+	nvme_disable_streams(ctrl);
+	return ret;
 }
 
 /*
-- 
2.16.4