Oops, I sent this patchset with cover-letter without good subject line, sorry...
On Jun 9 2017 09:34, Takashi Sakamoto wrote:
This is a part of layout of the structure.
struct snd_pcm_hw_params { ... unsigned int info; unsigned int msbits; unsigned int rate_num; unsigned int rate_den; snd_pcm_uframes_t fifo_size; ... };
For example, although the 'msbits', 'rate_num' and 'rate_den' fields are filled in a result of HW_REFINE command conditionally, they're never filled in a result of HW_PARAMS command. This seems a bug.
I note that there's a case for HW_PARAMS that the result includes proper values to these parameters. When drivers register constrain rules relevant to them, the members are filled.
Regards
Takashi Sakamoto