2023-05-04 19:51:55

by Sasha Levin

[permalink] [raw]
Subject: [PATCH AUTOSEL 6.2 51/53] Bluetooth: Add new quirk for broken set random RPA timeout for ATS2851

From: Raul Cheleguini <[email protected]>

[ 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 <[email protected]>
Signed-off-by: imoc <[email protected]>
Signed-off-by: Raul Cheleguini <[email protected]>
Signed-off-by: Luiz Augusto von Dentz <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
drivers/bluetooth/btusb.c | 1 +
include/net/bluetooth/hci.h | 8 ++++++++
net/bluetooth/hci_sync.c | 6 +++++-
3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 1ab5663b009d8..0923582299f3a 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -4106,6 +4106,7 @@ 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 7127313140cf0..9ace8b959d557 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 632be12672887..b65ee3a32e5d7 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -4093,7 +4093,8 @@ 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,
@@ -4533,6 +4534,9 @@ 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.")
};

--
2.39.2