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nvme: don't call nvme_init_ctrl_finish from nvme_passthru_end

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nvme_passthrough_end can race with a reset, which can lead to
racing stores to the cels xarray as well as further shengians
with upcoming more complicated initialization.

So drop the call and just log that the controller capabilities
might have changed and a reset could be required to use the new
controller capabilities.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Tested-by Gerd Bayer <gbayer@linxu.ibm.com>
This commit is contained in:
Christoph Hellwig 2022-11-08 15:46:45 +01:00
parent 1b96f862ec
commit 1e37a307f1
1 changed files with 4 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
drivers/nvme/host/core.c
View file

@ -1123,8 +1123,10 @@ void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects,
mutex_unlock(&ctrl->subsys->lock);
mutex_unlock(&ctrl->scan_lock);
}
if (effects & NVME_CMD_EFFECTS_CCC)
nvme_init_ctrl_finish(ctrl);
if (effects & NVME_CMD_EFFECTS_CCC) {
dev_info(ctrl->device,
"controller capabilities changed, reset may be required to take effect.\n");
}
if (effects & (NVME_CMD_EFFECTS_NIC | NVME_CMD_EFFECTS_NCC)) {
nvme_queue_scan(ctrl);
flush_work(&ctrl->scan_work);