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