diff options
| author | Anssi Hannula <anssi.hannula@iki.fi> | 2014-10-19 19:25:19 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-10-30 09:43:12 -0700 |
| commit | 6bd96259b22966363cecf5ae7f2ea39cfeee9f6d (patch) | |
| tree | 3cff397cc73ebf6569b2995e6fa4787af98f6b43 | |
| parent | e2a707074bc1c2fe450b10cc21635efc3b18555b (diff) | |
| download | lwn-6bd96259b22966363cecf5ae7f2ea39cfeee9f6d.tar.gz lwn-6bd96259b22966363cecf5ae7f2ea39cfeee9f6d.zip | |
ALSA: hda - hdmi: Fix missing ELD change event on plug/unplug
commit 6acce400d9daf1353fbf497302670c90a3205e1d upstream.
The ELD ALSA control change event is sent by hdmi_present_sense() when
eld_changed is true.
Currently, it is only true when the ELD buffer contents have been
modified. However, the user-visible ELD controls also change to a
zero-length value and back when eld_valid is unset/set, and no event is
currently sent in such cases (such as when unplugging or replugging a
sink).
Fix the code to always set eld_changed if eld_valid value is changed,
and therefore to always send the change event when the user-visible
value changes.
Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Cc: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | sound/pci/hda/patch_hdmi.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 99d7d7fecaad..c3658df2359c 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1577,19 +1577,22 @@ static bool hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll) } } - if (pin_eld->eld_valid && !eld->eld_valid) { - update_eld = true; + if (pin_eld->eld_valid != eld->eld_valid) eld_changed = true; - } + + if (pin_eld->eld_valid && !eld->eld_valid) + update_eld = true; + if (update_eld) { bool old_eld_valid = pin_eld->eld_valid; pin_eld->eld_valid = eld->eld_valid; - eld_changed = pin_eld->eld_size != eld->eld_size || + if (pin_eld->eld_size != eld->eld_size || memcmp(pin_eld->eld_buffer, eld->eld_buffer, - eld->eld_size) != 0; - if (eld_changed) + eld->eld_size) != 0) { memcpy(pin_eld->eld_buffer, eld->eld_buffer, eld->eld_size); + eld_changed = true; + } pin_eld->eld_size = eld->eld_size; pin_eld->info = eld->info; |