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authorLeif Liddy <leif.linux@gmail.com>2017-07-08 20:55:32 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-11-21 09:21:18 +0100
commitec4f8a71c0fc3c2ad0c40e01abcaf12631dd9ce2 (patch)
treefb217e49efea1ee6c41f12e9f694d1bb9379d723 /drivers/bluetooth
parent977784638f762db11674e96c311eeb41da90ab5c (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/bluetooth')
-rw-r--r--drivers/bluetooth/btusb.c6
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