On 25.7.2015 13:04, Robert Jarzmik wrote: > Petr Cvek <petr.cvek@xxxxxx> writes: > >> On 23.7.2015 21:46, Alan Stern wrote: >>>> It seems that it allows using a BULK endpoint for requested INT >>>> endpoint. For my PXA27x machine the original code returns BULK EP >>>> even with valid INT endpoint definition (because BULK EPs are defined >>>> earlier than INT EPs). >>> >>> Yes, it does allow a bulk endpoint to be used when an interrupt >>> endpoint was requested. However, it won't return a bulk endpoint if >>> all the bulk endpoints are already in use. > This cannot work for pxa27x. > > The pxa27x IP has a hardware limitation which prevents an endpoint from changing > its type once the UDC is enabled (see the comment at the beginning of > pxa27x_udc.c). Just crazy idea (based on how much I have to recompile kernel, when switching between testing gadgets), how much possible (EP allocation, no resource errors return, configuration/interface settings change) it would be to generate an EP configuration on the fly and only enabling the PXA27x when a set_configuration usb request is received? Petr -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
