Patch "Bluetooth: Add new quirk for broken set random RPA timeout for ATS2851" has been added to the 6.1-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    Bluetooth: Add new quirk for broken set random RPA timeout for ATS2851

to the 6.1-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-add-new-quirk-for-broken-set-random-rpa-ti.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 03ebf2d0e774f5ca5d0fd0e152b6604cf873200a
Author: Raul Cheleguini <raul.cheleguini@xxxxxxxxx>
Date:   Thu Mar 23 10:45:39 2023 -0300

    Bluetooth: Add new quirk for broken set random RPA timeout for ATS2851
    
    [ Upstream commit 91b6d02ddcd113352bdd895990b252065c596de7 ]
    
    The ATS2851 based controller advertises support for command "LE Set Random
    Private Address Timeout" but does not actually implement it, impeding the
    controller initialization.
    
    Add the quirk HCI_QUIRK_BROKEN_SET_RPA_TIMEOUT to unblock the controller
    initialization.
    
    < HCI Command: LE Set Resolvable Private... (0x08|0x002e) plen 2
            Timeout: 900 seconds
    > HCI Event: Command Status (0x0f) plen 4
          LE Set Resolvable Private Address Timeout (0x08|0x002e) ncmd 1
            Status: Unknown HCI Command (0x01)
    
    Co-developed-by: imoc <wzj9912@xxxxxxxxx>
    Signed-off-by: imoc <wzj9912@xxxxxxxxx>
    Signed-off-by: Raul Cheleguini <raul.cheleguini@xxxxxxxxx>
    Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 3991dcd2ebf79..faad19b396d50 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -4020,6 +4020,7 @@ static int btusb_probe(struct usb_interface *intf,
 		/* Support is advertised, but not implemented */
 		set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
 		set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks);
+		set_bit(HCI_QUIRK_BROKEN_SET_RPA_TIMEOUT, &hdev->quirks);
 		set_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &hdev->quirks);
 	}
 
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index f80ae7d237342..b350d92136c8d 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -301,6 +301,14 @@ enum {
 	 * don't actually support features declared there.
 	 */
 	HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2,
+
+	/*
+	 * When this quirk is set, the HCI_OP_LE_SET_RPA_TIMEOUT command is
+	 * skipped during initialization. This is required for the Actions
+	 * Semiconductor ATS2851 based controllers, which erroneously claims
+	 * to support it.
+	 */
+	HCI_QUIRK_BROKEN_SET_RPA_TIMEOUT,
 };
 
 /* HCI device flags */
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 9361fb3685cc7..e8b78104a4071 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -4075,7 +4075,8 @@ static int hci_le_set_rpa_timeout_sync(struct hci_dev *hdev)
 {
 	__le16 timeout = cpu_to_le16(hdev->rpa_timeout);
 
-	if (!(hdev->commands[35] & 0x04))
+	if (!(hdev->commands[35] & 0x04) ||
+	    test_bit(HCI_QUIRK_BROKEN_SET_RPA_TIMEOUT, &hdev->quirks))
 		return 0;
 
 	return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_RPA_TIMEOUT,
@@ -4515,6 +4516,9 @@ static const struct {
 			 "HCI Set Event Filter command not supported."),
 	HCI_QUIRK_BROKEN(ENHANCED_SETUP_SYNC_CONN,
 			 "HCI Enhanced Setup Synchronous Connection command is "
+			 "advertised, but not supported."),
+	HCI_QUIRK_BROKEN(SET_RPA_TIMEOUT,
+			 "HCI LE Set Random Private Address Timeout command is "
 			 "advertised, but not supported.")
 };