From 682121f340fe0b8ec885f9b628e754d2298a32a2 Mon Sep 17 00:00:00 2001 From: Paolo Sabatino Date: Thu, 16 Jun 2022 19:52:20 +0000 Subject: [PATCH] fix spreadtrum (sprd) broken bluetooth park link status --- drivers/bluetooth/hci_ldisc.c | 6 ++++++ include/net/bluetooth/hci.h | 6 ++++++ net/bluetooth/hci_sync.c | 2 +- 3 files changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c index f537673ede1..a3222cb727e 100644 --- a/drivers/bluetooth/hci_ldisc.c +++ b/drivers/bluetooth/hci_ldisc.c @@ -655,6 +655,12 @@ static int hci_uart_register_dev(struct hci_uart *hu) hdev->setup = hci_uart_setup; SET_HCIDEV_DEV(hdev, hu->tty->dev); + // Set the broken Park link status quirk, specific for spreadtrum (sprd) + // bluetooth devices + if (hdev->manufacturer == 0xffff && hu->tty->driver && + strncmp(hu->tty->driver->name, "ttyBT", 5) == 0) + set_bit(HCI_QUIRK_BROKEN_PARK_LINK_STATUS, &hdev->quirks); + if (test_bit(HCI_UART_RAW_DEVICE, &hu->hdev_flags)) set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index 656b609cb68..d2dc448501c 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -281,6 +281,12 @@ enum { * during the hdev->setup vendor callback. */ HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, + + /* + * Device declares that support Park link status, but it really + * does not support it and fails to initialize + */ + HCI_QUIRK_BROKEN_PARK_LINK_STATUS, }; /* HCI device flags */ diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c index 13600bf120b..a6437cd0935 100644 --- a/net/bluetooth/hci_sync.c +++ b/net/bluetooth/hci_sync.c @@ -3171,7 +3171,7 @@ static int hci_setup_link_policy_sync(struct hci_dev *hdev) link_policy |= HCI_LP_HOLD; if (lmp_sniff_capable(hdev)) link_policy |= HCI_LP_SNIFF; - if (lmp_park_capable(hdev)) + if (lmp_park_capable(hdev) && !test_bit(HCI_QUIRK_BROKEN_PARK_LINK_STATUS, &hdev->quirks)) link_policy |= HCI_LP_PARK; cp.policy = cpu_to_le16(link_policy); -- 2.30.2