From: Jaroslav Kysela <perex@perex.cz>
Date: Mon, 27 Feb 2017 08:29:18 +0000 (+0100)
Subject: pcm file plugin: handle snd_pcm_mmap_begin() error path in snd_pcm_file_mmap_commit()
X-Git-Tag: v1.1.4~25
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=b96f6f47852aa145645fb8626d009ec532246e55;p=alsa-lib.git

pcm file plugin: handle snd_pcm_mmap_begin() error path in snd_pcm_file_mmap_commit()
---

diff --git a/src/pcm/pcm_file.c b/src/pcm/pcm_file.c
index 0363f849..80122515 100644
--- a/src/pcm/pcm_file.c
+++ b/src/pcm/pcm_file.c
@@ -593,11 +593,13 @@ static snd_pcm_sframes_t snd_pcm_file_mmap_commit(snd_pcm_t *pcm,
 	const snd_pcm_channel_area_t *areas;
 	snd_pcm_sframes_t result;
 
-	snd_pcm_mmap_begin(file->gen.slave, &areas, &ofs, &siz);
-	assert(ofs == offset && siz == size);
-	result = snd_pcm_mmap_commit(file->gen.slave, ofs, siz);
-	if (result > 0)
-		snd_pcm_file_add_frames(pcm, areas, ofs, result);
+	result = snd_pcm_mmap_begin(file->gen.slave, &areas, &ofs, &siz);
+	if (result >= 0) {
+		assert(ofs == offset && siz == size);
+		result = snd_pcm_mmap_commit(file->gen.slave, ofs, siz);
+		if (result > 0)
+			snd_pcm_file_add_frames(pcm, areas, ofs, result);
+	}
 	return result;
 }