diff mbox

[v2,8/9] ALSA: hda - Skip ELD notification during PM process

Message ID 1448986198-3488-9-git-send-email-tiwai@suse.de (mailing list archive)
State New, archived
Headers show

Commit Message

Takashi Iwai Dec. 1, 2015, 4:09 p.m. UTC
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(+)

Comments

Takashi Iwai Dec. 3, 2015, 4:44 p.m. UTC | #1
On Tue, 01 Dec 2015 17:09:57 +0100,
Takashi Iwai wrote:
> 
> 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>

I applied this particular patch now to for-next branch, as it's
basically irrelevant with others.

The rest still needs review.


thanks,

Takashi

> ---
>  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 4dc21ecf7230..75815acb77db 100644
> --- a/sound/pci/hda/patch_hdmi.c
> +++ b/sound/pci/hda/patch_hdmi.c
> @@ -2450,6 +2450,9 @@ 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;
>  
>  	/* execute ELD update in a work for avoiding a deadlock */
>  	per_pin = get_pin(spec, pin_idx);
> -- 
> 2.6.3
>
diff mbox

Patch

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 4dc21ecf7230..75815acb77db 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -2450,6 +2450,9 @@  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;
 
 	/* execute ELD update in a work for avoiding a deadlock */
 	per_pin = get_pin(spec, pin_idx);