[PATCH v2 2/3] Bluetooth: Print broken quirks

Luiz Augusto von Dentz
2022-03-29T20:16:51Z

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 | 66 +++++++++++++++++++++++++++++++++++++---
1 file changed, 62 insertions(+), 4 deletions(-)

diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 8f4c5698913d..8994ff1f94e6 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -3825,6 +3825,67 @@ static int hci_init_sync(struct hci_dev *hdev)
return 0;
}

+#define HCI_QUIRK_BROKEN(_quirk, _desc) \
+{ \
+ .quirk = _quirk, \
+ .desc = _desc, \
+}
+
+static const struct hci_quirk_broken {
+ unsigned long quirk;
+ const char *desc;
+} hci_broken_table[] = {
+ HCI_QUIRK_BROKEN(HCI_QUIRK_BROKEN_LOCAL_COMMANDS,
+ "HCI Read Local Supported Commands not supported"),
+ HCI_QUIRK_BROKEN(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
+ "HCI Delete Stored Link Key command is advertised, "
+ "but not supported."),
+ HCI_QUIRK_BROKEN(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING,
+ "HCI Read Default Erroneous Data Reporting command is "
+ "advertised, but not supported."),
+ HCI_QUIRK_BROKEN(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER,
+ "HCI Read Transmit Power Level command is advertised, "
+ "but not supported."),
+ HCI_QUIRK_BROKEN(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL,
+ "HCI Set Event Filter command not supported."),
+ HCI_QUIRK_BROKEN(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN,
+ "HCI Enhanced Setup Synchronous Connection command is "
+ "advertised, but not supported.")
+};
+
+static void hci_dev_print_broken_quirks(struct hci_dev *hdev)
+{
+ int i;
+
+ bt_dev_dbg(hdev, "");
+
+ for (i = 0; i < ARRAY_SIZE(hci_broken_table); i++) {
+ const struct hci_quirk_broken *broken = &hci_broken_table[i];
+
+ if (test_bit(broken->quirk, &hdev->quirks))
+ bt_dev_warn(hdev, "%s", broken->desc);
+ }
+}
+
+static int hci_dev_setup_sync(struct hci_dev *hdev)
+{
+ bt_dev_dbg(hdev, "");
+
+ hci_sock_dev_event(hdev, HCI_DEV_SETUP);
+
+ if (hdev->setup) {
+ int ret;
+
+ ret = hdev->setup(hdev);
+ if (ret)
+ return ret;
+
+ hci_dev_print_broken_quirks(hdev);
+ }
+
+ return 0;
+}
+
int hci_dev_open_sync(struct hci_dev *hdev)
{
int ret = 0;
@@ -3887,10 +3948,7 @@ int hci_dev_open_sync(struct hci_dev *hdev)
test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) {
bool invalid_bdaddr;

- hci_sock_dev_event(hdev, HCI_DEV_SETUP);
-
- if (hdev->setup)
- ret = hdev->setup(hdev);
+ ret = hci_dev_setup_sync(hdev);

/* The transport driver can set the quirk to mark the
* BD_ADDR invalid before creating the HCI device or in
--
2.35.1