File 0035-pcm-file-plugin-handle-snd_pcm_mmap_begin-... of Package alsa.6660

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File 0035-pcm-file-plugin-handle-snd_pcm_mmap_begin-error-path.patch of Package alsa.6660

From b96f6f47852aa145645fb8626d009ec532246e55 Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Mon, 27 Feb 2017 09:29:18 +0100
Subject: [PATCH 35/43] pcm file plugin: handle snd_pcm_mmap_begin() error path
 in snd_pcm_file_mmap_commit()

---
 src/pcm/pcm_file.c |   12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

--- a/src/pcm/pcm_file.c
+++ b/src/pcm/pcm_file.c
@@ -593,11 +593,13 @@ static snd_pcm_sframes_t snd_pcm_file_mm
 	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;
 }

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File 0035-pcm-file-plugin-handle-snd_pcm_mmap_begin-error-path.patch of Package alsa.6660

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