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| author | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2021-10-06 04:09:33 +0300 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2021-10-06 11:48:34 +0300 |
| commit | d16e6d19ccc6d3aa6b96d6a8fdb9e04fb9dffdbd (patch) | |
| tree | ec08e326a89a1698eb6356ac524ed5802277ed5f | |
| parent | d0f1c248b4ff71cada1b9e4ed61a1992cd94c3df (diff) | |
| download | linux-d16e6d19ccc6d3aa6b96d6a8fdb9e04fb9dffdbd.tar.xz | |
Bluetooth: hci_vhci: Fix calling hci_{suspend,resume}_dev
Defer calls to hci_{suspend,resume}_dev to work so it doesn't block the
processing of the events.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
| -rw-r--r-- | drivers/bluetooth/hci_vhci.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/drivers/bluetooth/hci_vhci.c b/drivers/bluetooth/hci_vhci.c index b45db0db347c..20f8ce995555 100644 --- a/drivers/bluetooth/hci_vhci.c +++ b/drivers/bluetooth/hci_vhci.c @@ -38,6 +38,7 @@ struct vhci_data { struct mutex open_mutex; struct delayed_work open_timeout; + struct work_struct suspend_work; bool suspended; bool wakeup; @@ -114,6 +115,17 @@ static ssize_t force_suspend_read(struct file *file, char __user *user_buf, return simple_read_from_buffer(user_buf, count, ppos, buf, 2); } +static void vhci_suspend_work(struct work_struct *work) +{ + struct vhci_data *data = container_of(work, struct vhci_data, + suspend_work); + + if (data->suspended) + hci_suspend_dev(data->hdev); + else + hci_resume_dev(data->hdev); +} + static ssize_t force_suspend_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) @@ -129,16 +141,10 @@ static ssize_t force_suspend_write(struct file *file, if (data->suspended == enable) return -EALREADY; - if (enable) - err = hci_suspend_dev(data->hdev); - else - err = hci_resume_dev(data->hdev); - - if (err) - return err; - data->suspended = enable; + schedule_work(&data->suspend_work); + return count; } @@ -440,6 +446,7 @@ static int vhci_open(struct inode *inode, struct file *file) mutex_init(&data->open_mutex); INIT_DELAYED_WORK(&data->open_timeout, vhci_open_timeout); + INIT_WORK(&data->suspend_work, vhci_suspend_work); file->private_data = data; nonseekable_open(inode, file); @@ -455,6 +462,7 @@ static int vhci_release(struct inode *inode, struct file *file) struct hci_dev *hdev; cancel_delayed_work_sync(&data->open_timeout); + flush_work(&data->suspend_work); hdev = data->hdev; |