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| author | Leif Liddy <leif.linux@gmail.com> | 2017-07-08 20:55:32 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-21 09:23:21 +0100 |
| commit | ee61d06653fda94176813c852a547567a7887d21 (patch) | |
| tree | cdcc2fe1b12414e7ab5f39c143aa65db77ce51f1 /drivers/bluetooth | |
| parent | a5bd3edda619965bdaeb198f49b3713b4051ef39 (diff) | |
| download | linux-stable-ee61d06653fda94176813c852a547567a7887d21.tar.gz linux-stable-ee61d06653fda94176813c852a547567a7887d21.tar.bz2 linux-stable-ee61d06653fda94176813c852a547567a7887d21.zip | |
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.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 74e677ac8e37..693028659ccc 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2925,6 +2925,12 @@ 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 |