diff options
Diffstat (limited to 'drivers/soundwire')
| -rw-r--r-- | drivers/soundwire/stream.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c index 178ae92b8cc1..6aa0b5d370c0 100644 --- a/drivers/soundwire/stream.c +++ b/drivers/soundwire/stream.c @@ -1553,8 +1553,18 @@ int sdw_prepare_stream(struct sdw_stream_runtime *stream) sdw_acquire_bus_lock(stream); + if (stream->state != SDW_STREAM_CONFIGURED && + stream->state != SDW_STREAM_DEPREPARED && + stream->state != SDW_STREAM_DISABLED) { + pr_err("%s: %s: inconsistent state state %d\n", + __func__, stream->name, stream->state); + ret = -EINVAL; + goto state_err; + } + ret = _sdw_prepare_stream(stream); +state_err: sdw_release_bus_lock(stream); return ret; } @@ -1619,8 +1629,17 @@ int sdw_enable_stream(struct sdw_stream_runtime *stream) sdw_acquire_bus_lock(stream); + if (stream->state != SDW_STREAM_PREPARED && + stream->state != SDW_STREAM_DISABLED) { + pr_err("%s: %s: inconsistent state state %d\n", + __func__, stream->name, stream->state); + ret = -EINVAL; + goto state_err; + } + ret = _sdw_enable_stream(stream); +state_err: sdw_release_bus_lock(stream); return ret; } @@ -1693,8 +1712,16 @@ int sdw_disable_stream(struct sdw_stream_runtime *stream) sdw_acquire_bus_lock(stream); + if (stream->state != SDW_STREAM_ENABLED) { + pr_err("%s: %s: inconsistent state state %d\n", + __func__, stream->name, stream->state); + ret = -EINVAL; + goto state_err; + } + ret = _sdw_disable_stream(stream); +state_err: sdw_release_bus_lock(stream); return ret; } @@ -1749,8 +1776,18 @@ int sdw_deprepare_stream(struct sdw_stream_runtime *stream) } sdw_acquire_bus_lock(stream); + + if (stream->state != SDW_STREAM_PREPARED && + stream->state != SDW_STREAM_DISABLED) { + pr_err("%s: %s: inconsistent state state %d\n", + __func__, stream->name, stream->state); + ret = -EINVAL; + goto state_err; + } + ret = _sdw_deprepare_stream(stream); +state_err: sdw_release_bus_lock(stream); return ret; } |