diff options
| author | Sven Peter <sven@svenpeter.dev> | 2024-05-15 18:02:58 +0000 |
|---|---|---|
| committer | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2024-06-28 14:30:20 -0400 |
| commit | ed2a2ef16a6b9197a0e452308bf6acee6e01f709 (patch) | |
| tree | e63d50348aa569d4e7a967908f52b1d35e58b922 /drivers/bluetooth | |
| parent | dc6be0b73f4f55ab6d49fa55dbce299cf9fa2788 (diff) | |
Bluetooth: Add quirk to ignore reserved PHY bits in LE Extended Adv Report
Some Broadcom controllers found on Apple Silicon machines abuse the
reserved bits inside the PHY fields of LE Extended Advertising Report
events for additional flags. Add a quirk to drop these and correctly
extract the Primary/Secondary_PHY field.
The following excerpt from a btmon trace shows a report received with
"Reserved" for "Primary PHY" on a 4388 controller:
> HCI Event: LE Meta Event (0x3e) plen 26
LE Extended Advertising Report (0x0d)
Num reports: 1
Entry 0
Event type: 0x2515
Props: 0x0015
Connectable
Directed
Use legacy advertising PDUs
Data status: Complete
Reserved (0x2500)
Legacy PDU Type: Reserved (0x2515)
Address type: Random (0x01)
Address: 00:00:00:00:00:00 (Static)
Primary PHY: Reserved
Secondary PHY: No packets
SID: no ADI field (0xff)
TX power: 127 dBm
RSSI: -60 dBm (0xc4)
Periodic advertising interval: 0.00 msec (0x0000)
Direct address type: Public (0x00)
Direct address: 00:00:00:00:00:00 (Apple, Inc.)
Data length: 0x00
Cc: stable@vger.kernel.org
Fixes: 2e7ed5f5e69b ("Bluetooth: hci_sync: Use advertised PHYs on hci_le_ext_create_conn_sync")
Reported-by: Janne Grunau <j@jannau.net>
Closes: https://lore.kernel.org/all/Zjz0atzRhFykROM9@robin
Tested-by: Janne Grunau <j@jannau.net>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/hci_bcm4377.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/bluetooth/hci_bcm4377.c b/drivers/bluetooth/hci_bcm4377.c index 0c2f15235b4c..94e736595443 100644 --- a/drivers/bluetooth/hci_bcm4377.c +++ b/drivers/bluetooth/hci_bcm4377.c @@ -495,6 +495,10 @@ struct bcm4377_data; * extended scanning * broken_mws_transport_config: Set to true if the chip erroneously claims to * support MWS Transport Configuration + * broken_le_ext_adv_report_phy: Set to true if this chip stuffs flags inside + * reserved bits of Primary/Secondary_PHY inside + * LE Extended Advertising Report events which + * have to be ignored * send_calibration: Optional callback to send calibration data * send_ptb: Callback to send "PTB" regulatory/calibration data */ @@ -513,6 +517,7 @@ struct bcm4377_hw { unsigned long broken_ext_scan : 1; unsigned long broken_mws_transport_config : 1; unsigned long broken_le_coded : 1; + unsigned long broken_le_ext_adv_report_phy : 1; int (*send_calibration)(struct bcm4377_data *bcm4377); int (*send_ptb)(struct bcm4377_data *bcm4377, @@ -2373,6 +2378,8 @@ static int bcm4377_probe(struct pci_dev *pdev, const struct pci_device_id *id) set_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &hdev->quirks); if (bcm4377->hw->broken_le_coded) set_bit(HCI_QUIRK_BROKEN_LE_CODED, &hdev->quirks); + if (bcm4377->hw->broken_le_ext_adv_report_phy) + set_bit(HCI_QUIRK_FIXUP_LE_EXT_ADV_REPORT_PHY, &hdev->quirks); pci_set_drvdata(pdev, bcm4377); hci_set_drvdata(hdev, bcm4377); @@ -2477,6 +2484,7 @@ static const struct bcm4377_hw bcm4377_hw_variants[] = { .clear_pciecfg_subsystem_ctrl_bit19 = true, .broken_mws_transport_config = true, .broken_le_coded = true, + .broken_le_ext_adv_report_phy = true, .send_calibration = bcm4387_send_calibration, .send_ptb = bcm4378_send_ptb, }, |