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author | 2017-07-08 20:55:32 +0200 | |
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committer | 2017-07-20 11:18:36 +0200 | |
commit | fd865802c66bc451dc515ed89360f84376ce1a56 (patch) | |
tree | 49814ac7a016b1d050e06c8e237154557fe0a17a /drivers | |
parent | Bluetooth: hci_nokia: remove duplicate call to pm_runtime_disable() (diff) | |
download | linux-fd865802c66b.tar.gz linux-fd865802c66b.tar.bz2 linux-fd865802c66b.zip |
Bluetooth: btusb: fix QCA Rome suspend/resume
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>
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 b1e01b057a7c..0d533b258aa6 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -3068,6 +3068,12 @@ 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 |