From: Pedro Nishiyama nishiyama.pedro@gmail.com
[ Upstream commit 127881334eaad639e0a19a399ee8c91d6c9dc982 ]
Some fake controllers cannot be initialized because they return a smaller report than expected for READ_PAGE_SCAN_TYPE.
Signed-off-by: Pedro Nishiyama nishiyama.pedro@gmail.com Signed-off-by: Luiz Augusto von Dentz luiz.von.dentz@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- include/net/bluetooth/hci.h | 8 ++++++++ net/bluetooth/hci_sync.c | 3 ++- 2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index 6f06d20093a7a..8d4c5cb1496c9 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -362,6 +362,14 @@ enum { * This quirk must be set before hci_register_dev is called. */ HCI_QUIRK_BROKEN_READ_VOICE_SETTING, + + /* When this quirk is set, the HCI_OP_READ_PAGE_SCAN_TYPE command is + * skipped. This is required for a subset of the CSR controller clones + * which erroneously claim to support it. + * + * This quirk must be set before hci_register_dev is called. + */ + HCI_QUIRK_BROKEN_READ_PAGE_SCAN_TYPE, };
/* HCI device flags */ diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c index bb455e96a715a..cb4d47ae129e8 100644 --- a/net/bluetooth/hci_sync.c +++ b/net/bluetooth/hci_sync.c @@ -4156,7 +4156,8 @@ static int hci_read_page_scan_type_sync(struct hci_dev *hdev) * support the Read Page Scan Type command. Check support for * this command in the bit mask of supported commands. */ - if (!(hdev->commands[13] & 0x01)) + if (!(hdev->commands[13] & 0x01) || + test_bit(HCI_QUIRK_BROKEN_READ_PAGE_SCAN_TYPE, &hdev->quirks)) return 0;
return __hci_cmd_sync_status(hdev, HCI_OP_READ_PAGE_SCAN_TYPE,