On Sun, Oct 26, 2014 at 08:01:28PM +0200, Kyösti Mälkki wrote: > USB gadget driver dbgp can be used as an EHCI debug dongle in replacement > for product like Net20DC. With it one can receive early kernel messages > from remote targets over USB. See parameter earlyprintk=dbgp for target > kernel requirements and configuration. > > The two patches are required for dbgp gadget driver to work. Longterm > plan: I think G_DBGP_PRINTK is an odd hack and could be removed. > Exposing the debug descriptor can be implemented in cdc_acm so that we > could seemlessly reconfigure endpoint from the 8 byte payload limitation > EHCI Debug Port has, to 512 bytes, once ehci-hcd with DMA is available. > > > Handling of the termios CLOCAL flag calls for some discussion and I am > not that familiar with the tty infra u_serial uses. See the previous > change around gserial_disconnect(): > http://permalink.gmane.org/gmane.linux.usb.general/4260 scripts/get_maintainer.pl would've told you to Cc myself as the gadget framework maintainer ;-) -- balbi
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