From: Timo Wischer <twischer@de.adit-jv.com>
Date: Wed, 4 Jul 2018 13:39:49 +0000 (+0200)
Subject: pcm: rate: Add error check for snd_pcm_avail_update()
X-Git-Tag: v1.1.7~20
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=2c04ea1f297a9a7513ee8107cce1568c9bfc52aa;p=alsa-lib.git

pcm: rate: Add error check for snd_pcm_avail_update()

Without these changes a negative error code returned by
snd_pcm_avail_update() will be not handled correctly.

With this patch the returned error code of snd_pcm_avail_update() will be
returned by snd_pcm_rate_avail_update().

Signed-off-by: Timo Wischer <twischer@de.adit-jv.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/src/pcm/pcm_rate.c b/src/pcm/pcm_rate.c
index 4e0c7ca7..031a43dc 100644
--- a/src/pcm/pcm_rate.c
+++ b/src/pcm/pcm_rate.c
@@ -970,9 +970,12 @@ static snd_pcm_sframes_t snd_pcm_rate_avail_update(snd_pcm_t *pcm)
 {
 	snd_pcm_rate_t *rate = pcm->private_data;
 	snd_pcm_t *slave = rate->gen.slave;
-	snd_pcm_uframes_t slave_size;
+	snd_pcm_sframes_t slave_size;
 
 	slave_size = snd_pcm_avail_update(slave);
+	if (slave_size < 0)
+		return slave_size;
+
 	if (pcm->stream == SND_PCM_STREAM_CAPTURE)
 		goto _capture;
 	snd_pcm_rate_sync_hwptr(pcm);