On Thu, Jul 23, 2020 at 04:12:44PM +0200, SZIGETVÁRI János wrote: > Hi Alan, > > I recompiled the latest kernel (5.4.51) for the Pi Zero, and now the > patched g_multi module (or dwc2-hsotg for that matter) seems to load > just fine, and I was also able to use a DVD iso image, and dd its > whole content to /dev/null. > Now that we could see that the patch actually works, what would it > take for it to make it into the mainline kernel? Well, first of all the patch has to be cleaned up -- unnecessary stuff and debugging lines removed, style matching the current driver, and so on. Also, it should be integrated a little better: There already is a cdrom-emulation flag; maybe it should be changed to take on three possible values (disk drive, cdrom drive, or dvd-rom drive). Mostly though, I have to be convinced that the patch implements the required functions well enough to be considered a valid dvd-rom device according to the appropriate spec. Alan Stern > I have seen that > multiple people have asked for this functionality in different forum > threads in the past, and until now they were forced to resort to using > homebrew patched kernels for it to work, or they had to give up on it > if they weren't experienced enough to compile the patched kernel > themselves.
