From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
This adds force_prevent_wake which can be used to force a certain state
while interacting with force_suspend, the entry is only created for
hdev which has not set prevent_wake callback (e.g. vhci).
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
---
net/bluetooth/hci_debugfs.c | 45 +++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/net/bluetooth/hci_debugfs.c b/net/bluetooth/hci_debugfs.c
index 53b39cc73cd7..0121022a7398 100644
--- a/net/bluetooth/hci_debugfs.c
+++ b/net/bluetooth/hci_debugfs.c
@@ -350,6 +350,51 @@ static const struct file_operations force_suspend_fops = {
.llseek = default_llseek,
};
+static bool prevent_wake;
+
+static ssize_t force_prevent_wake_read(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ char buf[3];
+
+ buf[0] = prevent_wake ? 'Y' : 'N';
+ buf[1] = '\n';
+ buf[2] = '\0';
+ return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
+}
+
+static bool hci_debugfs_prevent_wake(struct hci_dev *hdev)
+{
+ return prevent_wake;
+}
+
+static ssize_t force_prevent_wake_write(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct hci_dev *hdev = file->private_data;
+ bool enable;
+ int err;
+
+ err = kstrtobool_from_user(user_buf, count, &enable);
+ if (err)
+ return err;
+
+ if (prevent_wake == enable)
+ return -EALREADY;
+
+ hdev->prevent_wake = hci_debugfs_prevent_wake;
+
+ return count;
+}
+
+static const struct file_operations force_prevent_wake_fops = {
+ .open = simple_open,
+ .read = force_prevent_wake_read,
+ .write = force_prevent_wake_write,
+ .llseek = default_llseek,
+};
+
DEFINE_INFO_ATTRIBUTE(hardware_info, hw_info);
DEFINE_INFO_ATTRIBUTE(firmware_info, fw_info);
--
2.31.1
