| commit | 6b580f523172f2c738b661069a57c23c74a75f88 | [log] [tgz] |
|---|---|---|
| author | Takashi Iwai <tiwai@suse.de> | Fri Apr 12 12:44:39 2019 +0200 |
| committer | Takashi Iwai <tiwai@suse.de> | Fri Apr 12 13:07:25 2019 +0200 |
| tree | d772938f0958be15c9f097fecfdccc39609c9b7b | |
| parent | 6740ea6776e97274627e3c261469d1c4ba0a0cb5 [diff] |
ALSA: seq: Protect racy pool manipulation from OSS sequencer OSS sequencer emulation still allows to queue and issue the events that manipulate the client pool concurrently in a racy way. This patch serializes the access like the normal sequencer write / ioctl via taking the client ioctl_mutex. Since the access to the sequencer client is done indirectly via a client id number, a new helper to take/release the mutex is introduced. Signed-off-by: Takashi Iwai <tiwai@suse.de>