linux-kernel - [PATCH 4.9 31/61] ALSA: core: Report audio_tstamp in snd_pcm_sync

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Date:   Mon, 30 Apr 2018 12:24:34 -0700
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, David Henningsson <diwic@...ntu.com>,
        Takashi Sakamoto <o-takashi@...amocchi.jp>,
        Takashi Iwai <tiwai@...e.de>
Subject: [PATCH 4.9 31/61] ALSA: core: Report audio_tstamp in snd_pcm_sync_ptr

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: David Henningsson <diwic@...ntu.com>

commit f853dcaae2f5bbe021161e421bd1576845bae8f6 upstream.

It looks like a simple mistake that this struct member
was forgotten.

Audio_tstamp isn't used much, and on some archs (such as x86) this
ioctl is not used by default, so that might be the reason why this
has slipped for so long.

Fixes: 4eeaaeaea1ce ("ALSA: core: add hooks for audio timestamps")
Signed-off-by: David Henningsson <diwic@...ntu.com>
Reviewed-by: Takashi Sakamoto <o-takashi@...amocchi.jp>
Cc: <stable@...r.kernel.org> # v3.8+
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/core/pcm_native.c |    1 +
 1 file changed, 1 insertion(+)

--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -2729,6 +2729,7 @@ static int snd_pcm_sync_ptr(struct snd_p
 	sync_ptr.s.status.hw_ptr = status->hw_ptr;
 	sync_ptr.s.status.tstamp = status->tstamp;
 	sync_ptr.s.status.suspended_state = status->suspended_state;
+	sync_ptr.s.status.audio_tstamp = status->audio_tstamp;
 	snd_pcm_stream_unlock_irq(substream);
 	if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr)))
 		return -EFAULT;