[alsa-devel] [PATCH] ALSA: hda - Don't enable unsol for jacks we're polling

[David Henningsson]

This will greatly reduce the frequency for detection errors in
those cases where the hardware is "flaky", i e, rapidly changing
between plugged and unplugged states even without user interaction.

Signed-off-by: David Henningsson <david.henningsson at canonical.com>
---
 sound/pci/hda/hda_jack.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/pci/hda/hda_jack.c b/sound/pci/hda/hda_jack.c
index 07d5288..5bdbada 100644
--- a/sound/pci/hda/hda_jack.c
+++ b/sound/pci/hda/hda_jack.c
@@ -206,6 +206,8 @@ int snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
 		jack->action = action;
 	if (cb)
 		jack->callback = cb;
+	if (codec->jackpoll_interval > 0)
+		return 0; /* No unsol if we're polling instead */
 	return snd_hda_codec_write_cache(codec, nid, 0,
 					 AC_VERB_SET_UNSOLICITED_ENABLE,
 					 AC_USRSP_EN | jack->tag);
-- 
1.7.9.5