File 0022-pcm-fix-snd_pcm_mmap_hw_avail-near-the-bou... of Package alsa

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File 0022-pcm-fix-snd_pcm_mmap_hw_avail-near-the-boundary.patch of Package alsa (Revision 453f338a860e2c2e7c5c37ff3a5bf507)

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From 99a2254f5f2a085b81efcc80950033a2b6110ecd Mon Sep 17 00:00:00 2001
From: "Alexander E. Patrakov" <patrakov@gmail.com>
Date: Sun, 31 Aug 2014 22:23:47 +0600
Subject: [PATCH] pcm: fix snd_pcm_mmap_hw_avail() near the boundary

This function returned incorrect results when hw.ptr was near the
boundary and hw.appl_ptr was near zero. Here "incorrect" means "greater
than the boundary".

The result was incorrect, because it was used as a return value of
various *_rewindable() functions and also as the delay for ioplug.

Signed-off-by: Alexander E. Patrakov <patrakov@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 src/pcm/pcm_local.h | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/src/pcm/pcm_local.h b/src/pcm/pcm_local.h
index 80bbe5973bdb..74ebd609334a 100644
--- a/src/pcm/pcm_local.h
+++ b/src/pcm/pcm_local.h
@@ -461,13 +461,7 @@ static inline snd_pcm_sframes_t snd_pcm_mmap_capture_hw_avail(snd_pcm_t *pcm)
 
 static inline snd_pcm_sframes_t snd_pcm_mmap_hw_avail(snd_pcm_t *pcm)
 {
-	snd_pcm_sframes_t avail;
-	avail = *pcm->hw.ptr - *pcm->appl.ptr;
-	if (pcm->stream == SND_PCM_STREAM_PLAYBACK)
-		avail += pcm->buffer_size;
-	if (avail < 0)
-		avail += pcm->boundary;
-	return pcm->buffer_size - avail;
+	return pcm->buffer_size - snd_pcm_mmap_avail(pcm);
 }
 
 static inline const snd_pcm_channel_area_t *snd_pcm_mmap_areas(snd_pcm_t *pcm)
-- 
2.1.2

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File 0022-pcm-fix-snd_pcm_mmap_hw_avail-near-the-boundary.patch of Package alsa (Revision 453f338a860e2c2e7c5c37ff3a5bf507)

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