Bluetooth: mgmt: Fix enabling LE while powered off

When new BT USB adapter is plugged in it's configured while still being powered
off (HCI_AUTO_OFF flag is set), thus Set LE will only set dev_flags but won't
write changes to controller. As a result it's not possible to start device
discovery session on LE controller as it uses interleaved discovery which
requires LE Supported Host flag in extended features.

This patch ensures HCI Write LE Host Supported is sent when Set Powered is
called to power on controller and clear HCI_AUTO_OFF flag.

Signed-off-by: Andrzej Kaczmarek <andrzej.kaczmarek@tieto.com>
Cc: stable@vger.kernel.org
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index f943bbfc9c619b4a739113bbf48b98b3fc3e3564..eba022de3c205bb55f2ed9639e4faf21d78ae9a8 100644 (file)
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -2881,6 +2881,16 @@ int mgmt_powered(struct hci_dev *hdev, u8 powered)
                        hci_send_cmd(hdev, HCI_OP_WRITE_SSP_MODE, 1, &ssp);
                }
 
+               if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) {
+                       struct hci_cp_write_le_host_supported cp;
+
+                       cp.le = 1;
+                       cp.simul = !!(hdev->features[6] & LMP_SIMUL_LE_BR);
+
+                       hci_send_cmd(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED,
+                                    sizeof(cp), &cp);
+               }
+
                update_class(hdev);
                update_name(hdev, hdev->dev_name);
                update_eir(hdev);