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Commit c3370de6 authored by Marcel Holtmann's avatar Marcel Holtmann Committed by Johan Hedberg
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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: default avatarMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: default avatarJohan Hedberg <johan.hedberg@intel.com>
parent db6e3e8d

net/bluetooth/hci_debugfs.c

+26 −0
Original line number Diff line number Diff line
@@ -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);