From 2506318e382c4c7daa77bdc48f80a0ee82804588 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Wed, 9 Dec 2020 16:01:19 +0100
Subject: [PATCH] ALSA: hda: Fix regressions on clear and reconfig sysfs
Git-commit: 2506318e382c4c7daa77bdc48f80a0ee82804588
Patch-mainline: v5.11-rc1
References: git-fixes

It seems that the HD-audio clear and reconfig sysfs don't work any
longer after the recent driver core change.  There are multiple issues
around that: the linked list corruption and the dead device handling.
The former issue is fixed by another patch for the driver core itself,
while the latter patch needs to be addressed in HD-audio side.

This patch corresponds to the latter, it recovers those broken
functions by replacing the device detach and attach actions with the
standard core API functions, which are almost equivalent with unbind
and bind actions.

Fixes: 654888327e9f ("driver core: Avoid binding drivers to dead devices")
Cc: <stable@vger.kernel.org>
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=209207
Link: https://lore.kernel.org/r/20201209150119.7705-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

---
 sound/pci/hda/hda_codec.c | 2 +-
 sound/pci/hda/hda_sysfs.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 4bb58e8b08a8..687216e74526 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -1803,7 +1803,7 @@ int snd_hda_codec_reset(struct hda_codec *codec)
 		return -EBUSY;
 
 	/* OK, let it free */
-	snd_hdac_device_unregister(&codec->core);
+	device_release_driver(hda_codec_dev(codec));
 
 	/* allow device access again */
 	snd_hda_unlock_devices(bus);
diff --git a/sound/pci/hda/hda_sysfs.c b/sound/pci/hda/hda_sysfs.c
index eb8ec109d7ad..d5ffcba794e5 100644
--- a/sound/pci/hda/hda_sysfs.c
+++ b/sound/pci/hda/hda_sysfs.c
@@ -139,7 +139,7 @@ static int reconfig_codec(struct hda_codec *codec)
 			   "The codec is being used, can't reconfigure.\n");
 		goto error;
 	}
-	err = snd_hda_codec_configure(codec);
+	err = device_reprobe(hda_codec_dev(codec));
 	if (err < 0)
 		goto error;
 	err = snd_card_register(codec->card);
-- 
2.26.2