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nvme: allow calling nvme_change_ctrl_state from irq context 

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
This commit is contained in:
Christoph Hellwig 2017-08-22 11:42:24 +02:00
parent a751da3394
commit 0a72bbba49
1 changed files with 3 additions and 2 deletions
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5
drivers/nvme/host/core.c
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@ -176,9 +176,10 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
enum nvme_ctrl_state new_state) enum nvme_ctrl_state new_state)
{ {
enum nvme_ctrl_state old_state; enum nvme_ctrl_state old_state;
unsigned long flags;
bool changed = false; bool changed = false;
spin_lock_irq(&ctrl->lock); spin_lock_irqsave(&ctrl->lock, flags);
old_state = ctrl->state; old_state = ctrl->state;
switch (new_state) { switch (new_state) {
@ -239,7 +240,7 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
if (changed) if (changed)
ctrl->state = new_state; ctrl->state = new_state;
spin_unlock_irq(&ctrl->lock); spin_unlock_irqrestore(&ctrl->lock, flags);
return changed; return changed;
} }