[PATCH 7/7] ALSA: hda - Skip ELD notification during PM process

From: Takashi Iwai <tiwai@suse.de>
To: intel-gfx@lists.freedesktop.org, alsa-devel@alsa-project.org
Cc: Mengdong Lin <mengdong.lin@linux.intel.com>,
	Vinod Koul <vinod.koul@intel.com>,
	Daniel Vetter <daniel.vetter@intel.com>,
	David Henningsson <david.henningsson@canonical.com>
Subject: [PATCH 7/7] ALSA: hda - Skip ELD notification during PM process
Date: Mon, 30 Nov 2015 14:37:51 +0100	[thread overview]
Message-ID: <1448890671-2983-8-git-send-email-tiwai@suse.de> (raw)
In-Reply-To: <1448890671-2983-1-git-send-email-tiwai@suse.de>

The ELD notification can be received asynchronously from the graphics
side, and this may happen just at the moment the sound driver is
processing the suspend or the resume, and it would confuse the whole
procedure.  Since the ELD and connection states are updated in anyway
at the end of the resume, we can skip it when received during PM
process.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/pci/hda/patch_hdmi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 23a4292c355f..0492f3cf744e 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -2433,6 +2433,9 @@ static void intel_pin_eld_notify(void *audio_ptr, int port)
 	 */
 	if (snd_power_get_state(codec->card) != SNDRV_CTL_POWER_D0)
 		return;
+	/* ditto during suspend/resume process itself */
+	if (atomic_read(&(codec)->core.in_pm))
+		return;
 
 	check_presence_and_report(codec, pin_nid);
 }
-- 
2.6.3

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