Messages in this thread Patch in this message | | | From | Johannes Thumshirn <> | Subject | [PATCH] nvme: make controller 'state' sysfs attribute pollable | Date | Wed, 20 Sep 2017 12:40:32 +0200 |
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Notify sysfs about changes of a nvme controller so user-space can watch the file via poll() or select() in order to react to a state change.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> --- drivers/nvme/host/core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index acc816b67582..064d973f1e22 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -237,8 +237,10 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl, break; } - if (changed) + if (changed) { ctrl->state = new_state; + sysfs_notify(&ctrl->dev->kobj, NULL, "state"); + } spin_unlock_irqrestore(&ctrl->lock, flags); -- 2.13.5
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