On Mon, 13 Nov 2017 01:14:09 +0100, Takashi Sakamoto wrote: > > Hi, > > This patchset is to update my previous one: > [alsa-lib][PATCH 0/2] ctl: deprecate APIs of dimension information > http://mailman.alsa-project.org/pipermail/alsa-devel/2017-November/126972.html > > In ALSA control interface of asound.h, 'struct snd_ctl_elem_info' has > 'dimen' member to deliver information for multi-dimensional array, however > there's no common way to handle the member. As a result, drivers can > force userspace applications to handle the information by inconsistent > ways. A series of echoaudio drivers is an actual example of the > inconsistent usage. > > This issue was addressed in a commit 51db452df07b ('Revert "ALSA: echoaudio: > purge contradictions between dimension matrix members and total number of > members"') to Linux kernel[1]. Fortunately, at present, this feature of > interface is just used by the drivers, and there's a way to obsolete usage > of the feature. We can obsolete it without large impacts to userland. > > As a result of discussion at Linux miniconference 2017, usage of 'dimen' > member of 'struct snd_ctl_elem_info' is going to be deprecated for future > removal. This patchset is for proposed tasks at a development period of > Linux kernel v4.15[3]. Some APIs of dimension information are deprecated. > > In a short discussion in my previous patchset, it's clear that actual > removal of kernel interface is uncertain depending on several conditions. > Thus the timing to remove the library APIs is not decided yet. This updated > version reflects the issue in API documentation (but simply removes > statement of the schedule...). > > [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/sound/pci/echoaudio?id=51db452df07bb4c5754b73789253ba21681d9dc2 > > [2] [ANNOUNCE] Audio Mini Summit 2017 at Prague, Oct 27 > http://mailman.alsa-project.org/pipermail/alsa-devel/2017-July/123110.html > > [3] https://github.com/takaswie/presentations/blob/master/20171027/contents.md > > Takashi Sakamoto (2): > ctl: deprecate APIs of dimensional information > test: obsolete usage of APIs of dimensional information Applied both patches now (with your sign-off). Thanks! Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
