5.4-stable review patch. If anyone has any objections, please let me know.
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From: Daniel Wagner wagi@kernel.org
[ Upstream commit 650415fca0a97472fdd79725e35152614d1aad76 ]
The original nvme subsystem design didn't have a CONNECTING state; the state machine allowed transitions from RESETTING to LIVE directly.
With the introduction of nvme fabrics the CONNECTING state was introduce. Over time the nvme-pci started to use the CONNECTING state as well.
Eventually, a bug fix for the nvme-fc started to depend that the only valid transition to LIVE was from CONNECTING. Though this change didn't update the firmware update handler which was still depending on RESETTING to LIVE transition.
The simplest way to address it for the time being is to switch into CONNECTING state before going to LIVE state.
Fixes: d2fe192348f9 ("nvme: only allow entering LIVE from CONNECTING state") Reported-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Daniel Wagner wagi@kernel.org Closes: https://lore.kernel.org/all/0134ea15-8d5f-41f7-9e9a-d7e6d82accaa@roeck-us.ne... Reviewed-by: Keith Busch kbusch@kernel.org Reviewed-by: Sagi Grimberg sagi@grimberg.me Reviewed-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvme/host/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 9816debe5cb51..94c8ef4a54d3f 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -3980,7 +3980,8 @@ static void nvme_fw_act_work(struct work_struct *work) msleep(100); }
- if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_LIVE)) + if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_CONNECTING) || + !nvme_change_ctrl_state(ctrl, NVME_CTRL_LIVE)) return;
nvme_start_queues(ctrl);