When num_params is defined as one in case of codec to codec dai link, there is no point in allocating memory for kcontrol.
Signed-off-by: anish kumar yesanishhere@gmail.com
include/sound/soc-dapm.h | 1 - sound/soc/soc-dapm.c | 147 ++++++++++++++++++++++++-----------------------
This is a very big change and that commit log doesn't describe it in any detail or really motivate it. What exactly does this do and why?
Currently in codec to codec dai link if there are multiple params defined then dapm can use created kcontrol to decide which param to apply at runtime.
However, in case there is only single param configuration then there is no point in creating the kcontrol (this is currently happening) and also there is no point in allocating memory for kcontrol.
In the snd_soc_dapm_new_pcm function, there is memory allocation happening for kcontrol which is later used or not used based on num_param. It is better to not allocate memory when there is only a single configuration. This change is to remedy that anomaly and also it remove unnecessary checks.