Commit 562fcc24 authored Aug 29, 2012 by Andrzej Kaczmarek Committed by Gustavo Padovan Sep 18, 2012

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>

parent 3d1cbdd6

net/bluetooth/mgmt.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -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);

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