[pulseaudio-discuss] [PATCH] bluez: Don't autodetect MTU by default
Arun Raghavan
arun at arunraghavan.net
Wed Sep 13 05:01:07 UTC 2017
On Wed, 13 Sep 2017, at 09:56 AM, Georg Chini wrote:
> On 13.09.2017 05:54, Arun Raghavan wrote:
> > 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;
>
> I think the patch should also address the crash that occurs when
> the MTU reported by the kernel is odd. I am not sure what to do
> in that case: Round down to an even value (which does not seem
> to produce sound) or fall back to 48.
I missed that -- can you link me to the mail/big that you are referring
to?
-- Arun
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