[PATCH v4 2/4] Bluetooth: Print broken quirks

[Luiz Augusto von Dentz <luiz.dentz@gmail.com>]

From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

This prints warnings for controllers setting broken quirks to increase
their visibility and warn about broken controllers firmware that
probably needs updates to behave properly.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
---
 net/bluetooth/hci_sync.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 8f4c5698913d..5610ec1242d6 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -3825,6 +3825,30 @@ static int hci_init_sync(struct hci_dev *hdev)
 	return 0;
 }
 
+#define HCI_QUIRK_BROKEN(_quirk, _desc) { HCI_QUIRK_BROKEN_##_quirk, _desc }
+
+static const struct {
+	unsigned long quirk;
+	const char *desc;
+} hci_broken_table[] = {
+	HCI_QUIRK_BROKEN(LOCAL_COMMANDS,
+			 "HCI Read Local Supported Commands not supported"),
+	HCI_QUIRK_BROKEN(STORED_LINK_KEY,
+			 "HCI Delete Stored Link Key command is advertised, "
+			 "but not supported."),
+	HCI_QUIRK_BROKEN(ERR_DATA_REPORTING,
+			 "HCI Read Default Erroneous Data Reporting command is "
+			 "advertised, but not supported."),
+	HCI_QUIRK_BROKEN(READ_TRANSMIT_POWER,
+			 "HCI Read Transmit Power Level command is advertised, "
+			 "but not supported."),
+	HCI_QUIRK_BROKEN(FILTER_CLEAR_ALL,
+			 "HCI Set Event Filter command not supported."),
+	HCI_QUIRK_BROKEN(ENHANCED_SETUP_SYNC_CONN,
+			 "HCI Enhanced Setup Synchronous Connection command is "
+			 "advertised, but not supported.")
+};
+
 int hci_dev_open_sync(struct hci_dev *hdev)
 {
 	int ret = 0;
@@ -3886,12 +3910,19 @@ int hci_dev_open_sync(struct hci_dev *hdev)
 	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 	    test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) {
 		bool invalid_bdaddr;
+		size_t i;
 
 		hci_sock_dev_event(hdev, HCI_DEV_SETUP);
 
 		if (hdev->setup)
 			ret = hdev->setup(hdev);
 
+		for (i = 0; i < ARRAY_SIZE(hci_broken_table); i++) {
+			if (test_bit(hci_broken_table[i].quirk, &hdev->quirks))
+				bt_dev_warn(hdev, "%s",
+					    hci_broken_table[i].desc);
+		}
+
 		/* The transport driver can set the quirk to mark the
 		 * BD_ADDR invalid before creating the HCI device or in
 		 * its setup callback.
-- 
2.35.1