Bluetooth: Introduce HCI_QUIRK_FIXUP_INQUIRY_MODE option

The HCI_QUIRK_FIXUP_INQUIRY_MODE option allows to force Inquiry Result
with RSSI setting on controllers that do not indicate support for it,
but where it is known to be fully functional.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index aee16bf..d0bca31 100644 (file)
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -102,6 +102,18 @@ enum {
         */
        HCI_QUIRK_FIXUP_BUFFER_SIZE,
 
+       /* When this quirk is set, then a controller that does not
+        * indicate support for Inquiry Result with RSSI is assumed to
+        * support it anyway. Some early Bluetooth 1.2 controllers had
+        * wrongly configured local features that will require forcing
+        * them to enable this mode. Getting RSSI information with the
+        * inquiry responses is preferred since it allows for a better
+        * user expierence.
+        *
+        * This quirk must be set before hci_register_dev is called.
+        */
+       HCI_QUIRK_FIXUP_INQUIRY_MODE,
+
        /* When this quirk is set, then the HCI Read Local Supported
         * Commands command is not supported. In general Bluetooth 1.2
         * and later controllers should support this command. However

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index ebac859..bc5486e 100644 (file)
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -621,7 +621,8 @@ static void hci_init2_req(struct hci_request *req, unsigned long opt)
                }
        }
 
-       if (lmp_inq_rssi_capable(hdev)) {
+       if (lmp_inq_rssi_capable(hdev) ||
+           test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) {
                u8 mode;
 
                /* If Extended Inquiry Result events are supported, then