| commit | 235e089c930efcab982118037c4d51bd0fec20e3 | [log] [tgz] |
|---|---|---|
| author | Takashi Iwai <tiwai@suse.de> | Tue Oct 11 09:01:46 2022 +0200 |
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | Wed Oct 26 13:16:55 2022 +0200 |
| tree | 2b96d8890034f591660ab38956d45b3136b80adf | |
| parent | 3fd4740cc34cab64575205d1c5b228fad8c8f0f5 [diff] |
ALSA: rawmidi: Drop register_mutex in snd_rawmidi_free() commit a70aef7982b012e86dfd39fbb235e76a21ae778a upstream. The register_mutex taken around the dev_unregister callback call in snd_rawmidi_free() may potentially lead to a mutex deadlock, when OSS emulation and a hot unplug are involved. Since the mutex doesn't protect the actual race (as the registration itself is already protected by another means), let's drop it. Link: https://lore.kernel.org/r/CAB7eexJP7w1B0mVgDF0dQ+gWor7UdkiwPczmL7pn91xx8xpzOA@mail.gmail.com Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20221011070147.7611-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>