File 0032-pcm-fix-64-bit-SNDRV_PCM_IOCTL_STATUS-ABI-breakage.patch of Package alsa

From 2b49df0c554cb9c7fc717dcf82d1b8f5310eef62 Mon Sep 17 00:00:00 2001
From: Clemens Ladisch <clemens@ladisch.de>
Date: Sun, 28 Oct 2012 12:30:29 +0100
Subject: [PATCH 32/35] pcm: fix 64-bit SNDRV_PCM_IOCTL_STATUS ABI breakage

Commit cf40ea169aad (pcm: support for audio timestamps) added the new
audio_tstamp field to struct sndrv_pcm_status.  However, struct timespec
requires 64-bit alignment, so the 64-bit compiler would insert
32 bits of padding before this field, which broke SNDRV_PCM_IOCTL_STATUS
with error messages like this:

      kernel: unknown ioctl = 0x80984120

To solve this, insert the padding explicitly so that it can be taken
into account when calculating the ABI structure size.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
---
 include/sound/asound.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/sound/asound.h b/include/sound/asound.h
index 16d03e8..8fdad91 100644
--- a/include/sound/asound.h
+++ b/include/sound/asound.h
@@ -427,8 +427,9 @@ struct sndrv_pcm_status {
 	sndrv_pcm_uframes_t avail_max;	/* max frames available on hw since last status */
 	sndrv_pcm_uframes_t overrange;	/* count of ADC (capture) overrange detections from last status */
 	int suspended_state;		/* suspended stream state */
+	u_int32_t reserved_alignment;	/* must be filled with zero */
 	struct timespec audio_tstamp;	/* from sample counter or wall clock */
-	unsigned char reserved[60-sizeof(struct timespec)]; /* must be filled with zero */
+	unsigned char reserved[56-sizeof(struct timespec)]; /* must be filled with zero */
 };
 
 struct sndrv_pcm_mmap_status {
-- 
1.8.0