From: Kai-Heng Feng kai.heng.feng@canonical.com
This patch has been added to the 4.1 stable tree. If you have any objections, please let us know.
===============
[ Upstream commit 7d06d5895c159f64c46560dc258e553ad8670fe0 ]
This reverts commit fd865802c66bc451dc515ed89360f84376ce1a56.
This commit causes a regression on some QCA ROME chips. The USB device reset happens in btusb_open(), hence firmware loading gets interrupted.
Furthermore, this commit stops working after commit ("a0085f2510e8976614ad8f766b209448b385492f Bluetooth: btusb: driver to enable the usb-wakeup feature"). Reset-resume quirk only gets enabled in btusb_suspend() when it's not a wakeup source.
If we really want to reset the USB device, we need to do it before btusb_open(). Let's handle it in drivers/usb/core/quirks.c.
Cc: stable@vger.kernel.org Cc: Leif Liddy leif.linux@gmail.com Cc: Matthias Kaehlcke mka@chromium.org Cc: Brian Norris briannorris@chromium.org Cc: Daniel Drake drake@endlessm.com Signed-off-by: Kai-Heng Feng kai.heng.feng@canonical.com Reviewed-by: Brian Norris briannorris@chromium.org Tested-by: Brian Norris briannorris@chromium.org Signed-off-by: Marcel Holtmann marcel@holtmann.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/bluetooth/btusb.c | 6 ------ 1 file changed, 6 deletions(-)
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index b17bd3fc74cb..32f5b87fe93c 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -3207,12 +3207,6 @@ 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); }
if (id->driver_info & BTUSB_REALTEK)