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Bluetooth: Improve comments on the HCI_Delete_Store_Link_Key issue 

Some Bluetooth controllers doesn't support this command so we first
need to check for its support before sending it. This patch adds a
lengthful commentary about this.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
hifive-unleashed-5.1
Gustavo Padovan 2013-06-13 12:34:31 +01:00
parent 502f769662
commit b8f4e06800
1 changed files with 9 additions and 1 deletions
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10
net/bluetooth/hci_core.c
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@ -597,7 +597,15 @@ static void hci_init3_req(struct hci_request *req, unsigned long opt)
struct hci_dev *hdev = req->hdev;
u8 p;
/* Only send HCI_Delete_Stored_Link_Key if it is supported */
/* Some Broadcom based Bluetooth controllers do not support the
* Delete Stored Link Key command. They are clearly indicating its
* absence in the bit mask of supported commands.
*
* Check the supported commands and only if the the command is marked
* as supported send it. If not supported assume that the controller
* does not have actual support for stored link keys which makes this
* command redundant anyway.
*/
if (hdev->commands[6] & 0x80) {
struct hci_cp_delete_stored_link_key cp;