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* [PATCH] Bluetooth: btusb: add a reject table to disable msft
@ 2021-08-19 13:59 Koba Ko
  2021-08-19 14:46 ` Marcel Holtmann
                   ` (4 more replies)
  0 siblings, 5 replies; 10+ messages in thread
From: Koba Ko @ 2021-08-19 13:59 UTC (permalink / raw)
  To: Marcel Holtmann, Johan Hedberg, Luiz Augusto von Dentz,
	linux-bluetooth, linux-kernel

With Intel AC9560, follow this scenario and can't turn on bt since.
1. turn off BT
2. then suspend&resume multiple times
3. turn on BT

Get this error message after turn on bt.
[ 877.194032] Bluetooth: hci0: urb 0000000061b9a002 failed to resubmit (113)
[ 886.941327] Bluetooth: hci0: Failed to read MSFT supported features (-110)

Remove msft from compilation would be helpful.
Turn off msft would be also helpful.

As per Intel's comment, For AC9560, in JSL the hw_variant is 0x13.
In GLK, the hw_variant is 0x11. can't use hw_variant to filter for
AC9560.
Only AC9560 encounter this issue, so add a reject table to
disable msft for AC9560.

Signed-off-by: Koba Ko <koba.ko@canonical.com>
---
 drivers/bluetooth/btusb.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index a9855a2dd561..3c131fd40869 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -479,6 +479,11 @@ static const struct usb_device_id blacklist_table[] = {
 	{ }	/* Terminating entry */
 };
 
+static const struct usb_device_id msft_rej_table[] = {
+	{ USB_DEVICE(0x8087, 0x0aaa) },
+	{ }	/* Terminating entry */
+};
+
 /* The Bluetooth USB module build into some devices needs to be reset on resume,
  * this is a problem with the platform (likely shutting off all power) not with
  * the module itself. So we use a DMI list to match known broken platforms.
@@ -2851,6 +2856,7 @@ static int btusb_setup_intel_new(struct hci_dev *hdev)
 	char ddcname[64];
 	int err;
 	struct intel_debug_features features;
+	struct usb_device_id *match;
 
 	BT_DBG("%s", hdev->name);
 
@@ -2928,7 +2934,9 @@ static int btusb_setup_intel_new(struct hci_dev *hdev)
 	case 0x12:	/* ThP */
 	case 0x13:	/* HrP */
 	case 0x14:	/* CcP */
-		hci_set_msft_opcode(hdev, 0xFC1E);
+		match = usb_match_id(data->intf, msft_rej_table);
+		if (!match)
+			hci_set_msft_opcode(hdev, 0xFC1E);
 		break;
 	}
 
-- 
2.25.1


^ permalink raw reply related	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2021-08-19 21:37 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-08-19 13:59 [PATCH] Bluetooth: btusb: add a reject table to disable msft Koba Ko
2021-08-19 14:46 ` Marcel Holtmann
2021-08-19 17:44 ` kernel test robot
2021-08-19 17:44   ` kernel test robot
2021-08-19 19:13 ` kernel test robot
2021-08-19 19:13   ` kernel test robot
2021-08-19 19:56 ` kernel test robot
2021-08-19 19:56   ` kernel test robot
2021-08-19 21:36 ` kernel test robot
2021-08-19 21:36   ` kernel test robot

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