On Sunday, December 13, 2015 at 07:35:19 PM, Stefan Bruens wrote: > On Sunday 13 December 2015 05:49:24 Marek Vasut wrote: > > On Sunday, December 13, 2015 at 05:47:18 AM, Stefan Brüns wrote: > > > The configuration descriptor includes all interface, endpoint and > > > auxiliary descriptors (e.g. report, union) so 512 may not be enough. > > > > > > Signed-off-by: Stefan Brüns <stefan.bru...@rwth-aachen.de> > > > > Can the size be determined in a dynamic manner instead of this ad-hoc > > random number ? > > Currently the buffer is allocated on the stack with > ALLOC_CACHE_ALIGN_BUFFER in usb_select_config(... The buffer is passed to > usb_get_configuration_no(...), but the buffer size is implicit. > > usb_get_configuration_no(...) already determines and checks the descriptor > size, but as it can not readjust the buffer it just bails out if it is > to small. > > The absolute maximum size for the descriptor is 64kB. > > So yes, this is possible, but needs a little bit more work.
Do you feel like working on it ? Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
