[ALSA] check for linked substreams of different cards

It is possible to have linked substreams that belong to different cards
and/or different drivers.  This patch changes some drivers to make sure
that they do not incorrectly try to handle substreams of a different
card.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 6 insertions, 4 deletions

diff --git a/sound/pci/ice1712/ice1724.c b/sound/pci/ice1712/ice1724.c
index 32560cfb6c3f..23c9383e7cce 100644
--- a/sound/pci/ice1712/ice1724.c
+++ b/sound/pci/ice1712/ice1724.c
@@ -341,10 +341,12 @@ static int snd_vt1724_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 
         what = 0;
         snd_pcm_group_for_each_entry(s, substream) {
-                const struct vt1724_pcm_reg *reg;
-                reg = s->runtime->private_data;
-                what |= reg->start;
-                snd_pcm_trigger_done(s, substream);
+                if (snd_pcm_substream_chip(s) == ice) {
+                        const struct vt1724_pcm_reg *reg;
+                        reg = s->runtime->private_data;
+                        what |= reg->start;
+                        snd_pcm_trigger_done(s, substream);
+                }
         }
 
         switch (cmd) {