On 24/03/2022 09:32, Greg Kroah-Hartman wrote: > On Thu, Mar 24, 2022 at 05:10:42PM +0900, Oh Eomji wrote: >> In mobile, a co-processor can be used with USB audio to improve >> power consumption. To support this type of hardware, hooks need to >> be added to the USB audio subsystem to be able to call into the >> hardware when needed. >> >> The main operation of the call-backs are: - Initialize the >> co-processor by transmitting data when initializing. - Change the >> co-processor setting value through the interface function. - >> Configure sampling rate - pcm open/close - other housekeeping >> >> Known issues: - This only supports one set of callback hooks, >> meaning that this only works if there is one type of USB controller >> in the system. This should be changed to be a per-host-controller >> interface instead of one global set of callbacks. > > Sorry, but this limitation alone means that this is not going to be > able to be accepted. Almost all real systems have multiple USB > controllers in the system and so, this will break in very bad ways on > the majority of devices in the world. > > Please fix this up and make this per-USB-controller, as was > requested the last time this series was published. This is a v2 (not v1) and Greg asked this already: https://lore.kernel.org/all/YiW6ZqnINsOSyN+z@xxxxxxxxx/ That time, it was left without an answer. Ignoring feedback and resending does not help in getting patches mainlined. :( Best regards, Krzysztof
