From c0f1886de7e173865f1a0fa7680a1c07954a987f Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Wed, 6 Oct 2021 16:19:40 +0200
Subject: ALSA: hda: intel: Allow repeatedly probing on codec configuration
errors
It seems that a few recent AMD systems show the codec configuration
errors at the early boot, while loading the driver at a later stage
works magically. Although the root cause of the error isn't clear,
it's certainly not bad to allow retrying the codec probe in such a
case if that helps.
This patch adds the capability for retrying the probe upon codec probe
errors on the certain AMD platforms. The probe_work is changed to a
delayed work, and at the secondary call, it'll jump to the codec
probing.
Note that, not only adding the re-probing, this includes the behavior
changes in the codec configuration function. Namely,
snd_hda_codec_configure() won't unregister the codec at errors any
longer. Instead, its caller, azx_codec_configure() unregisters the
codecs with the probe failures *if* any codec has been successfully
configured. If all codec probe failed, it doesn't unregister but let
it re-probed -- which is the most case we're seeing and this patch
tries to improve.
Even if the driver doesn't re-probe or give up, it will go to the
"free-all" error path, hence the leftover codecs shall be disabled /
deleted in anyway.
BugLink: https://bugzilla.suse.com/show_bug.cgi?id=1190801
Link: https://lore.kernel.org/r/20211006141940.2897-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
include/sound/hda_codec.h | 1 +
1 file changed, 1 insertion(+)
(limited to 'include')
diff --git a/include/sound/hda_codec.h b/include/sound/hda_codec.h
index 01570dbda503..0e45963bb767 100644
--- a/include/sound/hda_codec.h
+++ b/include/sound/hda_codec.h
@@ -224,6 +224,7 @@ struct hda_codec {
#endif
/* misc flags */
+ unsigned int configured:1; /* codec was configured */
unsigned int in_freeing:1; /* being released */
unsigned int registered:1; /* codec was registered */
unsigned int display_power_control:1; /* needs display power */
--
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