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| author | Vaibhav Agarwal | 2016-01-28 16:45:40 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2016-02-03 06:46:54 +0100 |
| commit | 3994e0b139c709047cdeb44b6c28cfb39f89f3f2 (patch) | |
| tree | 6cd7caf1fd59c104d0c0431adb80ef657d0eb973 /drivers/staging/greybus/audio_manager.c | |
| parent | greybus: audio: codec driver cleanup (diff) | |
| download | kernel-qcow2-linux-3994e0b139c709047cdeb44b6c28cfb39f89f3f2.tar.gz kernel-qcow2-linux-3994e0b139c709047cdeb44b6c28cfb39f89f3f2.tar.xz kernel-qcow2-linux-3994e0b139c709047cdeb44b6c28cfb39f89f3f2.zip | |
greybus: audio: use variable 'is_connected' to maintain module state
there is race condition between _disconnect() request &
stop_trigger() in case of abrupt module removal.
And sometimes this can lead to deadlock while acquiring
codec_info->lock.
To avoid such situation, atomic variable is used to maintain
codec connected state.
During dai operations (trigger, shutdown, etc.), 'is_connected'
variable is validated to avoid unnecessary lock acquire in
case module already removed.
Signed-off-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers/staging/greybus/audio_manager.c')
0 files changed, 0 insertions, 0 deletions