Dne 12. 10. 21 v 9:20 Greg Kroah-Hartman napsal(a):
On Wed, Oct 06, 2021 at 10:12:58AM +0200, Pavel Hofman wrote:EP IN is hard-coded as ASYNC both in f_uac1 and f_uac2 but u_audio sends steady number of audio frames in each USB packet, without any control. This patch adds 'Playback Pitch 1000000' ctl analogous to the existing 'Capture Pitch 1000000' ctl. The calculation of playback req->length in u_audio_iso_complete respects the Playback Pitch ctl value to 1ppm now. Max. value for Playback Pitch is configured by the existing parameter uac2_opts->fb_max, used also for the Capture Pitch. Since the EP IN packet size can be increased by uac2_opts->fb_max now, maxPacketSize for the playback direction is calculated by the same algorithm as for the async capture direction in f_uac2.c:set_ep_max_packet_size. Signed-off-by: Pavel Hofman <pavel.hofman@xxxxxxxxxxx> --- Notes: v2 -> v3: only notes addedFor: usb-nextDepends on patch 0560c9c ("usb: gadget: f_uac2: fixed EP-IN wMaxPacketSize") currently only in branch usb-linus.I have dropped this from my usb-testing branch now due to all of the issues found by the 0-day bot with it (build failure and warnings.) Please fix up and resubmit.
I apologize for the issues, a fixed patch was submitted a while ago https://patchwork.kernel.org/project/linux-usb/patch/20211013073934.36476-1-pavel.hofman@xxxxxxxxxxx/
Thanks a lot, Pavel.
