linux-kernel - [PATCH 5.4 42/74] ALSA: hda: Re-add dropped snd_poewr_change

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Message-Id: <20210405085026.098032720@linuxfoundation.org>
Date:   Mon,  5 Apr 2021 10:54:06 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Takashi Iwai <tiwai@...e.de>
Subject: [PATCH 5.4 42/74] ALSA: hda: Re-add dropped snd_poewr_change_state() calls

From: Takashi Iwai <tiwai@...e.de>

commit c8f79808cd8eb5bc8d14de129bd6d586d3fce0aa upstream.

The card power state change via snd_power_change_state() at the system
suspend/resume seems dropped mistakenly during the PM code rewrite.
The card power state doesn't play much role nowadays but it's still
referred in a few places such as the HDMI codec driver.

This patch restores them, but in a more appropriate place now in the
prepare and complete callbacks.

Fixes: f5dac54d9d93 ("ALSA: hda: Separate runtime and system suspend")
Cc: <stable@...r.kernel.org>
Link: https://lore.kernel.org/r/20210329113059.25035-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 sound/pci/hda/hda_intel.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1024,6 +1024,7 @@ static int azx_prepare(struct device *de
 
 	chip = card->private_data;
 	chip->pm_prepared = 1;
+	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 
 	flush_work(&azx_bus(chip)->unsol_work);
 
@@ -1039,6 +1040,7 @@ static void azx_complete(struct device *
 	struct azx *chip;
 
 	chip = card->private_data;
+	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 	chip->pm_prepared = 0;
 }