greybus: audio: Report warning in case module is already removed

Added warning message in find_gb_module(). This will help to identify
invalid mixer control/widget modification triggered from above layer.

Signed-off-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
Reviewed-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

diff --git a/drivers/staging/greybus/audio_topology.c b/drivers/staging/greybus/audio_topology.c
index e423e6d16a25d7c3e6f1936f5a06ab0afb40215b..dfe120baecadc60072f2af550e5c35499df21036 100644 (file)
--- a/drivers/staging/greybus/audio_topology.c
+++ b/drivers/staging/greybus/audio_topology.c
@@ -47,6 +47,8 @@ static struct gbaudio_module_info *find_gb_module(
                }
        }
        mutex_unlock(&codec->lock);
+       dev_warn(codec->dev, "%s: module#%d missing in codec list\n", name,
+                dev_id);
        return NULL;
 }