4.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hans de Goede hdegoede@redhat.com
commit fc54910280eb38bde923cdf0898e74687d8e6989 upstream.
Jeremy Cline correctly points out in rhbz#1514836 that a device where the QCA rome chipset needs the USB_QUIRK_RESET_RESUME quirk, may also ship with a different wifi/bt chipset in some configurations.
If that is the case then we are needlessly penalizing those other chipsets with a reset-resume quirk, typically causing 0.4W extra power use because this disables runtime-pm.
This commit moves the DMI table check to a btusb_check_needs_reset_resume() helper (so that we can easily also call it for other chipsets) and calls this new helper only for QCA_ROME chipsets for now.
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1514836 Cc: stable@vger.kernel.org Cc: Jeremy Cline jcline@redhat.com Suggested-by: Jeremy Cline jcline@redhat.com Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Marcel Holtmann marcel@holtmann.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/bluetooth/btusb.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-)
--- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2902,6 +2902,12 @@ static int btusb_config_oob_wake(struct } #endif
+static void btusb_check_needs_reset_resume(struct usb_interface *intf) +{ + if (dmi_check_system(btusb_needs_reset_resume_table)) + interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; +} + static int btusb_probe(struct usb_interface *intf, const struct usb_device_id *id) { @@ -3037,9 +3043,6 @@ static int btusb_probe(struct usb_interf hdev->send = btusb_send_frame; hdev->notify = btusb_notify;
- if (dmi_check_system(btusb_needs_reset_resume_table)) - interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; - #ifdef CONFIG_PM err = btusb_config_oob_wake(hdev); if (err) @@ -3177,6 +3180,7 @@ static int btusb_probe(struct usb_interf hdev->setup = btusb_setup_csr;
set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); + btusb_check_needs_reset_resume(intf); }
if (id->driver_info & BTUSB_SNIFFER) {