From: Jaroslav Kysela <perex@perex.cz>
Date: Thu, 19 Apr 2001 16:13:47 +0000 (+0000)
Subject: Code checking mmap() is back
X-Git-Tag: v1.0.3~869
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=667f008cd447a5f54658a328f83538ca69a6c133;p=alsa-lib.git

Code checking mmap() is back
---

diff --git a/src/pcm/pcm_surr.c b/src/pcm/pcm_surr.c
index 16821464..3f2a9710 100644
--- a/src/pcm/pcm_surr.c
+++ b/src/pcm/pcm_surr.c
@@ -196,6 +196,11 @@ static snd_pcm_sframes_t snd_pcm_surround_writei(snd_pcm_t *pcm, const void *buf
 	snd_pcm_surround_t *surr = pcm->private_data;
 	if (surr->pcms == 1)
 		return snd_pcm_writei(surr->pcm[0], buffer, size);
+	if (pcm->running_areas == NULL) {
+		int err;
+		if ((err = snd_pcm_mmap(pcm)) < 0)
+			return err;
+	}
 	return snd_pcm_mmap_writei(pcm, buffer, size);
 }
 
@@ -221,6 +226,11 @@ static snd_pcm_sframes_t snd_pcm_surround_readi(snd_pcm_t *pcm, void *buffer, sn
 	snd_pcm_surround_t *surr = pcm->private_data;
 	if (surr->pcms == 1)
 		return snd_pcm_readi(surr->pcm[0], buffer, size);
+	if (pcm->running_areas == NULL) {
+		int err;
+		if ((err = snd_pcm_mmap(pcm)) < 0)
+			return err;
+	}
 	return snd_pcm_mmap_readi(pcm, buffer, size);
 }