This is a note to let you know that I've just added the patch titled Bluetooth: btusb: Restore QCA Rome suspend/resume fix with a "rewritten" version to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: bluetooth-btusb-restore-qca-rome-suspend-resume-fix-with-a-rewritten-version.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 61f5acea8737d9b717fcc22bb6679924f3c82b98 Mon Sep 17 00:00:00 2001 From: Hans de Goede <hdegoede@xxxxxxxxxx> Date: Mon, 8 Jan 2018 10:44:16 +0100 Subject: Bluetooth: btusb: Restore QCA Rome suspend/resume fix with a "rewritten" version From: Hans de Goede <hdegoede@xxxxxxxxxx> commit 61f5acea8737d9b717fcc22bb6679924f3c82b98 upstream. Commit 7d06d5895c15 ("Revert "Bluetooth: btusb: fix QCA...suspend/resume"") removed the setting of the BTUSB_RESET_RESUME quirk for QCA Rome devices, instead favoring adding USB_QUIRK_RESET_RESUME quirks in usb/core/quirks.c. This was done because the DIY BTUSB_RESET_RESUME reset-resume handling has several issues (see the original commit message). An added advantage of moving over to the USB-core reset-resume handling is that it also disables autosuspend for these devices, which is similarly broken on these. But there are 2 issues with this approach: 1) It leaves the broken DIY BTUSB_RESET_RESUME code in place for Realtek devices. 2) Sofar only 2 of the 10 QCA devices known to the btusb code have been added to usb/core/quirks.c and if we fix the Realtek case the same way we need to add an additional 14 entries. So in essence we need to duplicate a large part of the usb_device_id table in btusb.c in usb/core/quirks.c and manually keep them in sync. This commit instead restores setting a reset-resume quirk for QCA devices in the btusb.c code, avoiding the duplicate usb_device_id table problem. This commit avoids the problems with the original DIY BTUSB_RESET_RESUME code by simply setting the USB_QUIRK_RESET_RESUME quirk directly on the usb_device. This commit also moves the BTUSB_REALTEK case over to directly setting the USB_QUIRK_RESET_RESUME on the usb_device and removes the now unused BTUSB_RESET_RESUME code. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1514836 Fixes: 7d06d5895c15 ("Revert "Bluetooth: btusb: fix QCA...suspend/resume"") Cc: Leif Liddy <leif.linux@xxxxxxxxx> Cc: Matthias Kaehlcke <mka@xxxxxxxxxxxx> Cc: Brian Norris <briannorris@xxxxxxxxxxxx> Cc: Daniel Drake <drake@xxxxxxxxxxxx> Cc: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/bluetooth/btusb.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-) --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -23,6 +23,7 @@ #include <linux/module.h> #include <linux/usb.h> +#include <linux/usb/quirks.h> #include <linux/firmware.h> #include <asm/unaligned.h> @@ -360,8 +361,8 @@ static const struct usb_device_id blackl #define BTUSB_FIRMWARE_LOADED 7 #define BTUSB_FIRMWARE_FAILED 8 #define BTUSB_BOOTING 9 -#define BTUSB_RESET_RESUME 10 -#define BTUSB_DIAG_RUNNING 11 +#define BTUSB_DIAG_RUNNING 10 +#define BTUSB_OOB_WAKE_ENABLED 11 struct btusb_data { struct hci_dev *hdev; @@ -2969,6 +2970,12 @@ 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. + */ + interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; } #ifdef CONFIG_BT_HCIBTUSB_RTL @@ -2979,7 +2986,7 @@ static int btusb_probe(struct usb_interf * but the USB hub doesn't notice any status change. * Explicitly request a device reset on resume. */ - set_bit(BTUSB_RESET_RESUME, &data->flags); + interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; } #endif @@ -3136,14 +3143,6 @@ static int btusb_suspend(struct usb_inte btusb_stop_traffic(data); usb_kill_anchored_urbs(&data->tx_anchor); - /* Optionally request a device reset on resume, but only when - * wakeups are disabled. If wakeups are enabled we assume the - * device will stay powered up throughout suspend. - */ - if (test_bit(BTUSB_RESET_RESUME, &data->flags) && - !device_may_wakeup(&data->udev->dev)) - data->udev->reset_resume = 1; - return 0; } Patches currently in stable-queue which might be from hdegoede@xxxxxxxxxx are queue-4.4/ahci-add-pci-ids-for-intel-bay-trail-cherry-trail-and-apollo-lake-ahci.patch queue-4.4/bluetooth-btsdio-do-not-bind-to-non-removable-bcm43341.patch queue-4.4/hid-quirks-fix-keyboard-touchpad-on-toshiba-click-mini-not-working.patch queue-4.4/ahci-annotate-pci-ids-for-mobile-intel-chipsets-as-such.patch queue-4.4/bluetooth-btusb-restore-qca-rome-suspend-resume-fix-with-a-rewritten-version.patch