tree 0a15d05e0ad9e2d172b23e4fb38c1313de03e737
parent d13775ee72e6034d93336aa7e7d3e3bc8447f1b0
author Jonathan Bell <jonathan@raspberrypi.com> 1693907990 +0100
committer Jonathan Bell <jonathan@raspberrypi.com> 1693907990 +0100

cdc_uart: cater for Windows driver deficiencies

It's possible for the Windows CDC-ACM driver to ignore the IN endpoint
for long periods of time - multiple frames - if the host application
doesn't consume uart RX data. Boost buffer sizes to compensate.

Also prevent usb_thread from potentially being idle for a tick when
there's work to do.