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| author | Leif Liddy <leif.linux@gmail.com> | 2017-07-08 20:55:32 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2017-07-20 11:18:36 +0200 |
| commit | fd865802c66bc451dc515ed89360f84376ce1a56 (patch) | |
| tree | 49814ac7a016b1d050e06c8e237154557fe0a17a /drivers/bluetooth | |
| parent | a529df8207b4dbc1a6ffd89d228afdcde042c97e (diff) | |
| download | talos-op-linux-fd865802c66bc451dc515ed89360f84376ce1a56.tar.gz talos-op-linux-fd865802c66bc451dc515ed89360f84376ce1a56.zip | |
Bluetooth: btusb: fix QCA Rome suspend/resume
There's been numerous reported instances where BTUSB_QCA_ROME
bluetooth controllers stop functioning upon resume from suspend. These
devices seem to be losing power during suspend. Patch will detect a status
change on resume and perform a reset.
Signed-off-by: Leif Liddy <leif.linux@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/btusb.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index b1e01b057a7c..0d533b258aa6 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -3068,6 +3068,12 @@ static int btusb_probe(struct usb_interface *intf, if (id->driver_info & BTUSB_QCA_ROME) { data->setup_on_usb = btusb_setup_qca; hdev->set_bdaddr = btusb_set_bdaddr_ath3012; + + /* QCA Rome devices lose their updated firmware over suspend, + * but the USB hub doesn't notice any status change. + * Explicitly request a device reset on resume. + */ + set_bit(BTUSB_RESET_RESUME, &data->flags); } #ifdef CONFIG_BT_HCIBTUSB_RTL |
