[pulseaudio-discuss] [PATCH] bluez: Don't autodetect MTU by default

[Arun Raghavan]

This breaks a lot of headsets, so disabling by default. Can be
re-enabled in configuration for specific hardware where it is deemed
necessary.

Also added some debug logging to be able to examine what MTU size is
reported by the device.

BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=102660
---
 src/modules/bluetooth/backend-native.c         | 1 +
 src/modules/bluetooth/module-bluez5-device.c   | 2 +-
 src/modules/bluetooth/module-bluez5-discover.c | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/modules/bluetooth/backend-native.c b/src/modules/bluetooth/backend-native.c
index 6eb4e1682..0f0104d89 100644
--- a/src/modules/bluetooth/backend-native.c
+++ b/src/modules/bluetooth/backend-native.c
@@ -206,6 +206,7 @@ static int sco_acquire_cb(pa_bluetooth_transport *t, bool optional, size_t *imtu
         if (getsockopt(sock, SOL_SCO, SCO_OPTIONS, &sco_opt, &len) < 0)
             pa_log_warn("getsockopt(SCO_OPTIONS) failed, loading defaults");
         else {
+            pa_log_debug("autodetected imtu = omtu = %u", sco_opt.mtu);
             if (imtu) *imtu = sco_opt.mtu;
             if (omtu) *omtu = sco_opt.mtu;
         }
diff --git a/src/modules/bluetooth/module-bluez5-device.c b/src/modules/bluetooth/module-bluez5-device.c
index c0e681b17..a37c3d54f 100644
--- a/src/modules/bluetooth/module-bluez5-device.c
+++ b/src/modules/bluetooth/module-bluez5-device.c
@@ -2256,7 +2256,7 @@ int pa__init(pa_module* m) {
         goto fail_free_modargs;
     }
 
-    autodetect_mtu = true;
+    autodetect_mtu = false;
     if (pa_modargs_get_value_boolean(ma, "autodetect_mtu", &autodetect_mtu) < 0) {
         pa_log("Invalid boolean value for autodetect_mtu parameter");
         goto fail_free_modargs;
diff --git a/src/modules/bluetooth/module-bluez5-discover.c b/src/modules/bluetooth/module-bluez5-discover.c
index 97ff94357..c535ead41 100644
--- a/src/modules/bluetooth/module-bluez5-discover.c
+++ b/src/modules/bluetooth/module-bluez5-discover.c
@@ -124,7 +124,7 @@ int pa__init(pa_module *m) {
         goto fail;
     }
 
-    autodetect_mtu = true;
+    autodetect_mtu = false;
     if (pa_modargs_get_value_boolean(ma, "autodetect_mtu", &autodetect_mtu) < 0) {
         pa_log("Invalid boolean value for autodetect_mtu parameter");
         goto fail;
-- 
2.13.5