4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kai-Heng Feng <kai.heng.f...@canonical.com>
commit 7d06d5895c159f64c46560dc258e553ad8670fe0 upstream.
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: Leif Liddy <leif.li...@gmail.com>
Cc: Matthias Kaehlcke <m...@chromium.org>
Cc: Brian Norris <briannor...@chromium.org>
Cc: Daniel Drake <dr...@endlessm.com>
Signed-off-by: Kai-Heng Feng <kai.heng.f...@canonical.com>
Reviewed-by: Brian Norris <briannor...@chromium.org>
Tested-by: Brian Norris <briannor...@chromium.org>
Signed-off-by: Marcel Holtmann <mar...@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/bluetooth/btusb.c | 6 ------
1 file changed, 6 deletions(-)
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -2969,12 +2969,6 @@ static int btusb_probe(struct usb_interf
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
