From c3370de64d563fa0db5e773b97b77ea7a961d131 Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Wed, 1 Apr 2015 13:21:37 -0700 Subject: [PATCH] Bluetooth: Expose current Device ID information via debugfs For debugging purposes it is good to be able to read the current configured Device ID details. Signed-off-by: Marcel Holtmann Signed-off-by: Johan Hedberg --- net/bluetooth/hci_debugfs.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/net/bluetooth/hci_debugfs.c b/net/bluetooth/hci_debugfs.c index e6255833a258..7db4220941cc 100644 --- a/net/bluetooth/hci_debugfs.c +++ b/net/bluetooth/hci_debugfs.c @@ -114,6 +114,30 @@ static const struct file_operations features_fops = { .release = single_release, }; +static int device_id_show(struct seq_file *f, void *ptr) +{ + struct hci_dev *hdev = f->private; + + hci_dev_lock(hdev); + seq_printf(f, "%4.4x:%4.4x:%4.4x:%4.4x\n", hdev->devid_source, + hdev->devid_vendor, hdev->devid_product, hdev->devid_version); + hci_dev_unlock(hdev); + + return 0; +} + +static int device_id_open(struct inode *inode, struct file *file) +{ + return single_open(file, device_id_show, inode->i_private); +} + +static const struct file_operations device_id_fops = { + .open = device_id_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + static int device_list_show(struct seq_file *f, void *ptr) { struct hci_dev *hdev = f->private; @@ -335,6 +359,8 @@ void hci_debugfs_create_common(struct hci_dev *hdev) debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev); debugfs_create_u8("hardware_error", 0444, hdev->debugfs, &hdev->hw_error_code); + debugfs_create_file("device_id", 0444, hdev->debugfs, hdev, + &device_id_fops); debugfs_create_file("device_list", 0444, hdev->debugfs, hdev, &device_list_fops);