4.4-stable review patch. If anyone has any objections, please let me know.
------------------
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;
}