commit e81be90bdafa48389028249c357a4efcd0fdce53
author Johan Hedberg <johan.hedberg@intel.com> Sun Aug 30 21:47:20 2015 +0300
committer Marcel Holtmann <marcel@holtmann.org> Thu Sep 17 13:20:00 2015 +0200
tree 37863fd30878836d786348737e7168f708a94746
parent 37d2dbcdcca88e392009d7cbe8617d5af0ebcb32

Bluetooth: Use BROKEN_STORED_LINK_KEY quirk for HCI_Read_Stored_Link_Key

Some counterfeit CSR controllers also have broken behavior with the
HCI_Read_Stored_Link_Key command:

< HCI Command: Read Stored Link Key (0x03|0x000d) plen 7
        Address: 00:00:00:00:00:00 (OUI 00-00-00)
        Read all: 0x01
> HCI Event: Command Complete (0x0e) plen 8
      Read Stored Link Key (0x03|0x000d) ncmd 1
        Status: Unsupported Feature or Parameter Value (0x11)
        Max num keys: 0
        Num keys: 0

Extend the existing HCI_QUIRK_BROKEN_STORED_LINK_KEY to be also used
for this HCI command.

Reported-and-tested-by: Rhobison Alves Pereira <rhobison@hotmail.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

net/bluetooth/hci_core.c

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index adcbc74..5a36020 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -693,7 +693,8 @@
 
 	hci_setup_event_mask(req);
 
-	if (hdev->commands[6] & 0x20) {
+	if (hdev->commands[6] & 0x20 &&
+	    !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) {
 		struct hci_cp_read_stored_link_key cp;
 
 		bacpy(&cp.bdaddr, BDADDR_ANY);