From 350d41bc8569096ed7e559039d6c64097864bebe 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_core.c | 2 +- 3 files changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c index 12218d388869..e40690b0f8bb 100644 --- a/drivers/bluetooth/hci_ldisc.c +++ b/drivers/bluetooth/hci_ldisc.c @@ -660,6 +660,12 @@ 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 6da4b3c5dd55..fbb1a13420b4 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -246,6 +246,12 @@ enum { * HCI after resume. */ HCI_QUIRK_NO_SUSPEND_NOTIFIER, + + /* + * 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_core.c b/net/bluetooth/hci_core.c index 42ba5051c315..cd8ed6f17e50 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -510,7 +510,7 @@ static void hci_setup_link_policy(struct hci_request *req) 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);