From: Shuming Fan <shumingf@realtek.com>

The _sdw_prepare_stream function just returns the error code when
compute_params callback failed.
The cumulative bus bandwidth will keep the value and won't be decreased
by sdw_deprepare_stream function.
We should restore the value of cumulative bus bandwidth when
compute_params callback failed.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Reviewed-by: Paul Olaru <paul.olaru@oss.nxp.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
---
 drivers/soundwire/stream.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c
index 8c6da1739e3d..136b6850a3f0 100644
--- a/drivers/soundwire/stream.c
+++ b/drivers/soundwire/stream.c
@@ -1369,7 +1369,7 @@ static int _sdw_prepare_stream(struct sdw_stream_runtime *stream,
 			if (ret < 0) {
 				dev_err(bus->dev, "Compute params failed: %d\n",
 					ret);
-				return ret;
+				goto restore_params;
 			}
 		}
 
-- 
2.25.1

On 16-03-23, 09:30, Bard Liao wrote:
> From: Shuming Fan <shumingf@realtek.com>
> 
> The _sdw_prepare_stream function just returns the error code when
> compute_params callback failed.
> The cumulative bus bandwidth will keep the value and won't be decreased
> by sdw_deprepare_stream function.
> We should restore the value of cumulative bus bandwidth when
> compute_params callback failed.

Applied, thanks

-- 
~Vinod