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| author | Martin Koegler <martin.koegler@chello.at> | 2016-03-02 21:26:28 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-03-08 12:52:52 +0300 |
| commit | a1ce94d03bfdfaa1ef31c1a84383105888ac5f3b (patch) | |
| tree | dcd0595298350887b43b59d79dcc05779e26a458 /sound/core/seq/seq_clientmgr.h | |
| parent | 56d94d70398f0fbb1863a03a145db1a86f009a71 (diff) | |
| download | linux-a1ce94d03bfdfaa1ef31c1a84383105888ac5f3b.tar.xz | |
ALSA: seq: Provide card number / PID via sequencer client info
rawmidi devices expose the card number via IOCTLs, which allows to
find the corresponding device in sysfs.
The sequencer provides no identifing data. Chromium works around this
issue by scanning rawmidi as well as sequencer devices and matching
them by using assumtions, how the kernel register sequencer devices.
This changes adds support for exposing the card number for kernel clients
as well as the PID for user client.
The minor of the API version is changed to distinguish between the zero
initialised reserved field and card number 0.
[minor coding style fixes by tiwai]
Signed-off-by: Martin Koegler <martin.koegler@chello.at>
Acked-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/seq/seq_clientmgr.h')
| -rw-r--r-- | sound/core/seq/seq_clientmgr.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/core/seq/seq_clientmgr.h b/sound/core/seq/seq_clientmgr.h index 20f0a725ec7d..c6614254ef8a 100644 --- a/sound/core/seq/seq_clientmgr.h +++ b/sound/core/seq/seq_clientmgr.h @@ -33,6 +33,7 @@ struct snd_seq_user_client { struct file *file; /* file struct of client */ /* ... */ + struct pid *owner; /* fifo */ struct snd_seq_fifo *fifo; /* queue for incoming events */ @@ -41,6 +42,7 @@ struct snd_seq_user_client { struct snd_seq_kernel_client { /* ... */ + struct snd_card *card; }; |