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nvme: disable streams when get stream params failed 

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>
This commit is contained in:
Wu Bo 2020-05-13 16:18:13 +08:00 committed by Christoph Hellwig
parent 614fc1c0d9
commit 84e4c204b6
1 changed files with 6 additions and 3 deletions
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9
drivers/nvme/host/core.c
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@ -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;
}
/*