diff options
| author | Leif Liddy <leif.linux@gmail.com> | 2017-07-08 20:55:32 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-21 09:21:18 +0100 |
| commit | ec4f8a71c0fc3c2ad0c40e01abcaf12631dd9ce2 (patch) | |
| tree | fb217e49efea1ee6c41f12e9f694d1bb9379d723 /drivers | |
| parent | 977784638f762db11674e96c311eeb41da90ab5c (diff) | |
Bluetooth: btusb: fix QCA Rome suspend/resume
commit fd865802c66bc451dc515ed89360f84376ce1a56 upstream.
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>
Cc: Kai Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -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 7bb8055bd10c..1ccad79ce77c 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2969,6 +2969,12 @@ 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 |