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authorTakashi Iwai <tiwai@suse.de>2018-01-11 08:45:51 +0100
committerTakashi Iwai <tiwai@suse.de>2018-01-11 08:45:58 +0100
commit8541b91e3799b470514b1c37b99c861811b633fc (patch)
tree2d24b4ebc70e385c4a495d74dc3b5d7741371139
parent90d9afff84b83e5b42c358112c57ed132e1f217e (diff)
ALSA: pcm: Add missing error checks in OSS emulation plugin
builder (bsc#1031717). suse-commit: 4cf8ddcd04136991ffd56a202511b12af295cfef
-rw-r--r--sound/core/oss/pcm_plugin.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/sound/core/oss/pcm_plugin.c b/sound/core/oss/pcm_plugin.c
index 727ac44d39f4..a84a1d3d23e5 100644
--- a/sound/core/oss/pcm_plugin.c
+++ b/sound/core/oss/pcm_plugin.c
@@ -591,18 +591,26 @@ snd_pcm_sframes_t snd_pcm_plug_write_transfer(struct snd_pcm_substream *plug, st
snd_pcm_sframes_t frames = size;
plugin = snd_pcm_plug_first(plug);
- while (plugin && frames > 0) {
+ while (plugin) {
+ if (frames <= 0)
+ return frames;
if ((next = plugin->next) != NULL) {
snd_pcm_sframes_t frames1 = frames;
- if (plugin->dst_frames)
+ if (plugin->dst_frames) {
frames1 = plugin->dst_frames(plugin, frames);
+ if (frames1 <= 0)
+ return frames1;
+ }
if ((err = next->client_channels(next, frames1, &dst_channels)) < 0) {
return err;
}
if (err != frames1) {
frames = err;
- if (plugin->src_frames)
+ if (plugin->src_frames) {
frames = plugin->src_frames(plugin, frames1);
+ if (frames <= 0)
+ return frames;
+ }
}
} else
dst_channels = NULL;