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Subject[PATCH 3/9] nvme/core: add NVME_CTRL_SUSPENDED controller state
Date
This state will be used by a controller that is going to
suspended state, and will later be used by mdev
framework to detect this and flush its queues

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
---
drivers/nvme/host/core.c | 15 +++++++++++++++
drivers/nvme/host/nvme.h | 1 +
2 files changed, 16 insertions(+)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 6a9dd68c0f4f..cf9de026cb93 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -320,6 +320,19 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
switch (old_state) {
case NVME_CTRL_NEW:
case NVME_CTRL_RESETTING:
+ case NVME_CTRL_CONNECTING:
+ case NVME_CTRL_SUSPENDED:
+ changed = true;
+ /* FALLTHRU */
+ default:
+ break;
+ }
+ break;
+ case NVME_CTRL_SUSPENDED:
+ switch (old_state) {
+ case NVME_CTRL_NEW:
+ case NVME_CTRL_LIVE:
+ case NVME_CTRL_RESETTING:
case NVME_CTRL_CONNECTING:
changed = true;
/* FALLTHRU */
@@ -332,6 +345,7 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
case NVME_CTRL_NEW:
case NVME_CTRL_LIVE:
case NVME_CTRL_ADMIN_ONLY:
+ case NVME_CTRL_SUSPENDED:
changed = true;
/* FALLTHRU */
default:
@@ -354,6 +368,7 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
case NVME_CTRL_ADMIN_ONLY:
case NVME_CTRL_RESETTING:
case NVME_CTRL_CONNECTING:
+ case NVME_CTRL_SUSPENDED:
changed = true;
/* FALLTHRU */
default:
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index c4a1bb41abf0..9320b0a87d79 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -142,6 +142,7 @@ static inline u16 nvme_req_qid(struct request *req)
enum nvme_ctrl_state {
NVME_CTRL_NEW,
NVME_CTRL_LIVE,
+ NVME_CTRL_SUSPENDED,
NVME_CTRL_ADMIN_ONLY, /* Only admin queue live */
NVME_CTRL_RESETTING,
NVME_CTRL_CONNECTING,
--
2.17.2
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