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-rw-r--r--include/sound/rawmidi.h2
-rw-r--r--sound/core/rawmidi.c9
2 files changed, 11 insertions, 0 deletions
diff --git a/include/sound/rawmidi.h b/include/sound/rawmidi.h
index c23c26585700..2480e7d10dcf 100644
--- a/include/sound/rawmidi.h
+++ b/include/sound/rawmidi.h
@@ -46,6 +46,7 @@
struct snd_rawmidi;
struct snd_rawmidi_substream;
struct snd_seq_port_info;
+struct pid;
struct snd_rawmidi_ops {
int (*open) (struct snd_rawmidi_substream * substream);
@@ -97,6 +98,7 @@ struct snd_rawmidi_substream {
struct snd_rawmidi_str *pstr;
char name[32];
struct snd_rawmidi_runtime *runtime;
+ struct pid *pid;
/* hardware layer */
struct snd_rawmidi_ops *ops;
};
diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index 818b1299ed91..2f766123b158 100644
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -278,6 +278,7 @@ static int open_substream(struct snd_rawmidi *rmidi,
substream->active_sensing = 0;
if (mode & SNDRV_RAWMIDI_LFLG_APPEND)
substream->append = 1;
+ substream->pid = get_pid(task_pid(current));
rmidi->streams[substream->stream].substream_opened++;
}
substream->use_count++;
@@ -488,6 +489,8 @@ static void close_substream(struct snd_rawmidi *rmidi,
snd_rawmidi_runtime_free(substream);
substream->opened = 0;
substream->append = 0;
+ put_pid(substream->pid);
+ substream->pid = NULL;
rmidi->streams[substream->stream].substream_opened--;
}
@@ -1336,6 +1339,9 @@ static void snd_rawmidi_proc_info_read(struct snd_info_entry *entry,
substream->number,
(unsigned long) substream->bytes);
if (substream->opened) {
+ snd_iprintf(buffer,
+ " Owner PID : %d\n",
+ pid_vnr(substream->pid));
runtime = substream->runtime;
snd_iprintf(buffer,
" Mode : %s\n"
@@ -1357,6 +1363,9 @@ static void snd_rawmidi_proc_info_read(struct snd_info_entry *entry,
substream->number,
(unsigned long) substream->bytes);
if (substream->opened) {
+ snd_iprintf(buffer,
+ " Owner PID : %d\n",
+ pid_vnr(substream->pid));
runtime = substream->runtime;
snd_iprintf(buffer,
" Buffer size : %lu\n"