On Thu, 14 May 2020 11:07:15 +0200, changjoon.lee@xxxxxxx wrote: > > From: ChangJoon Lee <changjoon.lee@xxxxxxx> > > Hi, ALSA Teams, > > This is documentation update purpose patch. > This patch does NOT alter any of operations. > > This patch allows an application engineer to understand why they received negative return > such as -EIO, -EBADFD, -ENOSYS, -ESTRPIPE and etc which are not fully documented on documentation site. > > This patch also exposes Expected Status of PCM based on bad_pcm_state() with P_STATE to help engineer to understand API behavior to the documentation site. > > TODO : > We may need improve consistency of return value especially for snd_pcm_hw_params_current(). > It returns -EBADFD when PCM is not setup while other API returns -EIO in this case. Could you put those explanations rather into the patch description, not (only) in the cover letter? thanks, Takashi
